Chess Room Newsletter #864 | Mechanics' Institute

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Chess Room Newsletter #864

Gens Una Sumus!

Newsletter #864

March 29, 2019

By Abel Talamantez


Club regulars following the action of the US Championship.

Club regulars following the action of the US Championship.

West Portal Elementary chess student Bianca Rosenthal picked up a recreational game while visiting in France.


TNM Round 2 Recap: High Drama on Board 1 and Launch of Twitch broadcast and Chess24 Coverage Caps Stellar Evening

The atmosphere was electric inside the Mechanics’ Institute Chess Club, where a whopping 55 boards filled up the chess room and the café for the 2nd round of the Spring TNM.

The round saw competitive matches across the top boards in our Championship 2000+ section, but none got more attention in the evening than the drama unfolding on board 1, where GM Patrick Wolff found himself in trouble for the latter part of the game, but ultimately managed a three-fold repetition to salvage a draw from a losing position against Expert Jason Childress.

Also, Frank Revi captured these amazing shots from the TNM, capturing the feel and the drama of the evening:

Kristian Clemens has 2 seconds on his clock and navigating an endgame against Gagik Babayan. The game ended in a draw. Photo by Frank Revi.

WFM Mugi Tsegmed ponders her next move. She ended up winning her game against Gianluca Pane. Photo by Frank Revi.

David Rakonitz making his move against Rober Drane. Two attorneys battling it out peacefully over the chess board. Photo by Frank Revi.

For the standings after 2 rounds, click here.

Last Tuesday also was the first live broadcast of our TNM, with FM Paul Whitehead providing colorful commentary on the games, including players coming in after their games to discuss. To view Live broadcasts with commentary on our TNM games, with more chess content to follow soon, join our Twitch channel.

See replays of our Twitch broadcasts at our YouTube channel.


San Francisco Scholastic Championship: Record Numbers and a Celebration of Chess

On Saturday March 23, we held the 2019 San Francisco Scholastic Chess Championship in Golden Gate Park, with a record attendance of 247 players. This event was sponsored by First Republic Bank and was free for all players. We had one open rated section and 5 other unrated sections divided by grade level: Grade K-1, Grade 2-3, Grade 4-5, Grade 6-8 and Grade 9-12.

I’d like to personally thank all the staff and volunteers for making a great experience for kids and parents, their dedication was truly felt throughout the day. Special thanks to Vincent Ng and Bright Knights chess club for their hard work and support of this event.

Sportsmanship is among the many things taught in our scholastic programs, a handshake is a part of the beginning of all games.

GM Daniel Naroditsky and WGM Carla Heredia perform a tandem simul, not too often players get to battle 2 GM’s at the same time!

GM Nick de Firmian and David Flores look on as players get ready to start the round.

Players and parents await the start of the awards ceremony.


Tournament Musings #2

I thought this would be a good time to discuss some recent tournament rulings that I think would be a benefit to the chess community as a whole. The following are real things that have happened in the last 2 weeks at actual rated events.

To Resign or Not to Resign?

In our first FIDE Rapid tournament last Monday, one player blundered a rook, at which during the shock of noticing it and having their rook captured, the player extended the hand as if to offer a handshake but then pulled it back, looked at the board, and made a move. The opposing player played on without making a claim. In the end, the player who hung a rook ending up winning the game. What should have been done?

The game was allowed to continue as the opponent made a move and did not accept the handshake. In reality, the game should have immediately ended according to Article 5.1.2 of the FIDE Arbiter’s Manual, which states:

A player may resign in a number of different ways:

  • stopping the clock 

  • announcing his resignation 

  • knocking over the king 

  • reaching out his hand to the opponent 

  • signing a score sheet, and so on. 

This was my mistake, and one to learn from. The game should have been immediately called as a resignation; an acceptance of the handshake was not required.

Wait... My Opponent Wasn’t Recording!

I was called to the table over a dispute where a player (white) had run out of time on the clock, but complained his opponent had not been recoding the game. That player had 51 minutes left.

According to Section 15C of the Official Rules of Chess from the U.S. Chess Federation:

If either player has less than 5 minutes remaining in a sudden death time control and does not have additional time (increment) of 30 seconds or more added with each move, both players are excused from the obligation to keep score. A scoresheet is not required to win on time in a sudden death control.

As such, the game was called a win for black as that player was not required to keep score. BOTH players are excused from keeping score if one of the players is under 5 minutes in a delay time control.

What Did You Write?

During a game in the TNM, I noticed a player write down their anticipated move on their scoresheet before playing it, thought about it a bit, then crossed out the move and played a different move than the original move written down.

According to Section 15A. Manner of Keeping Score:

... the player must first make the move, and then record it on the scoresheet. The scoresheet shall be visible to the arbiter (tournament directors) and the opponent throughout the game.

After the player played their move, I quietly informed the player to make sure they make the move first and record after. I’ll make an announcement at the start of the next event, as it is a good rule to know.

Say What?

I was called to a game in the open section of the TNM where one of the players announced a forced mate to his opponent. In this arbiter’s opinion, the announcement was the result of previous animosity between the two players, and therefore not in the spirit of good sportsmanship. After first establishing the position on the board and whose move it was, I allowed the game to finish to completion, and spoke to the player who made the announcement in the office after regarding sportsmanship and expectation inside the Mechanics’ Institute chess club.

As a formal rule, this falls into Section 20G. Annoying Behavior Prohibited. The rule states:

It is forbidden to distract or annoy the opponent in any manner whatsoever. A director, upon a complaint by the opponent, has discretion to determine whether any particular behavior is in violation of this rule and to impose penalties.

I have a low tolerance for this type of thing, or any behavior that obviously transcends sportsmanship and fair play and becomes personal. While I don’t think it was maliciously done, I ask to please keep any personal attitudes regarding opponents out of the chess club, as it only becomes disruptive to the other players and sets a general bad example of how to conduct ones self at an event.


Wednesday Night Blitz Report

Experts dominated the March 27 edition of the Wednesday Night Blitz, with Arthur Ismakov, Carlos Davila and Jules Jelinek finishing 1st, 2nd and 3rd respectfully. Eleven players participated under the watchful eye of TD Jelinek.


Tony’s Teasers

Last week’s solution:

  1. Qh1!! Kf6
  2. Qh6#
  1. Qh1!! Nh5
  2. Qc6#

This week’s problem:

Mate in 2, white to move, from Walter Jacobs, 1941.

Friendly Rivalries, Part 5.

By FM Paul Whitehead


FM Craig Mar and I clashed a total of seven times with me ahead + 3 – 2 = 2.

I found Craig to be an tough opponent: he rarely blundered and was very patient, and our games were scrappy and raw. Below are 6 of our 7 encounters (leaving out a boring draw). The games are uneven -- maybe even not that good! -- but they were played in interesting events of those times...

I still Craig around today, he hangs out in East Bay Coffee Houses dispensing sage chess advice to the hoi polloi and visiting various events. Craig has retired from competitive chess but has talked about throwing his hat back in.

We can only hope.

(1) Mar,Craig - Whitehead,Paul A [C01]
Walnut Creek, CA, 1977

Craig and my first game. We are both rated 2100+ at the time. I'm not sure what Craig was thinking here... 1.e4 e6 2.d4 d5 3.exd5 exd5 4.Nf3 Bd6 5.Be2 Slow. 5...Ne7 6.0-0 0-0 7.h3 Amateurish. 7...c5 8.dxc5 Bxc5 9.Bf4 Nbc6 10.Nbd2 Bd6 11.Bxd6 Qxd6 12.Nb3 Ng6 13.c4 Nf4 14.Bd3?

Much better was 14.ed5 with an edge for Black. 14...Qh6! Black's attack crashes through. 15.cxd5 Bxh3! 16.Ne1 Bxg2 17.f3 Qh1+ 18.Kf2 Nh3+ 19.Kg3 Bxf1 Does White realize he's playing a Rook and 2 Pawns down AND getting mated? 20.Qd2 Ne5 21.Nd4 Qg1+ 22.Kh4 Qxd4+ 23.Kg3 Now Black is ahead a Rook, Knight and 2 Pawns. And the attack continues... 23...Qg1+ 24.Kh4 Bxd3 25.Kxh3 Bf5+ 26.Kh4 Nxf3+

It's 27... Qg4 mate next. 0-1

(2) Mar,Craig - Whitehead,Paul [A36]
People's Tournament, Berkeley, 1978

Our second encounter, and one which set the template for the next game also: White moves around patiently and Black implodes. 1.c4 g6 2.Nc3 Bg7 3.g3 Nf6 4.Bg2 d6 5.e4 0-0 6.Nge2 c5 7.0-0 Nc6 8.d3 Ne8 9.Be3 Nc7 Perhaps 9...Nd4. 10.d4 cxd4 11.Nxd4 Ne6 12.Nde2 Ne5 13.b3 Nc5 14.Nd4 a6 15.h3 Rb8 16.Qd2 Bd7 17.Rad1 b5 18.cxb5 axb5 19.Nd5 Nc6 20.Nxc6 Bxc6 21.Bh6 Bxh6 22.Qxh6 e6 23.Nb4 Now 23...Bxe4 24.Bxe4 Nxe4 25.Nc6 Qf6 26.Nxb8 Rxb8 with unclear play was possible. 23...Ba8 24.e5

24...Qa5? Allows a nice continuation after which White never lets up. Correct was 24...Bxg2 25.Kxg2 Rb6 with equal chances. 25.Rd4! dxe5 26.Rh4 Rfc8 27.Qxh7+ Kf8 28.Bxa8 Qxa8 29.Qh6+ Ke8 30.Qh8+ Ke7 31.Qxe5 Nd7 32.Qg5+ Ke8 33.Rd4 Rc5 34.Qe3 Rbc8 35.Rfd1 Ne5 36.Nd5!

A crushing blow. 36...Qb8 37.Nf6+ Ke7 38.Nd7 Qc7 39.Nxc5 Qxc5 40.f4

Craig's best game against me. 1-0

(3) Mar,Craig - Whitehead,Paul [B30]
Stamer Memorial, S.F., 1978

The following game features a ghastly blunder, and will always live in my memory for that! 1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 e6 5.Nb5 d6 6.c4 Nf6 7.N1c3 a6 8.Na3 Be7 9.Be2 0-0 10.0-0 b6 11.Be3 Bb7 12.Qd2 Ne5 13.f3 Re8 14.Rfd1 Rc8 15.Rac1

A fairly typical position. Both sides "push wood" for awhile... 15...Ba8 16.Bd4 Qc7 17.Qe3 Ned7 18.Qf2 Qb8 19.Bd3 Qb7 20.Re1 Bf8 21.Rcd1 Qb8 22.Na4

Now things heat up. 22...e5?! 22...Nc5 was just fine. 23.Be3 b5 24.cxb5 d5 25.Ba7?! Turns out not so good. 25.exd5 was correct. Craigs move is flashy, but... 25...Qc7 26.bxa6 Qa5! Suddenly White is in trouble. 27.Bc2 Qxa6 28.exd5 Too late. 28...Bxa3 29.bxa3 Rxc2 30.Qxc2 Qxa7+ 31.Kh1 Bxd5

Black is better, but it's not easy. 32.Nc3 Ba8 33.Nb5 Qa5 34.Nd6 Rf8 35.Nc4

Now comes the worst move of my chess career! 35...e4?? I remember thinking this was quite normal. I even got up out of my chair and walked around until it hit me... 36.Nxa5! After 10 minutes thought! 36...exf3 After blundering his Queen black pretends nothing happened. 37.gxf3 Bxf3+ 38.Kg1 Ra8 39.Qc7

Black finally gave up. 1-0

(4) Whitehead,Paul - Mar,Craig [C41]
American Open, Pasadena, 1978

Finally I am White and having the tournament of my life ( I ended tied with IM David Strauss for 1st Place). But it wasn't enough. 1.e4 e5 2.Nf3 d6 3.d4 Nd7 4.Bc4 c6 5.0-0 Be7 6.Nc3 Ngf6 7.a4 0-0 8.Qe2 Playing the Rook to e1 as I played against Craig later is more incisive. 8...h6 9.h3 Re8 10.dxe5 dxe5 11.Rd1 Qc7 12.Nh4 Nf8 13.Nf5 Be6 14.Be3 Bb4 15.Bxe6 Nxe6 16.Qf3 Bxc3 17.bxc3 Nh7 18.Qg4 Kh8

Now 19.Nxg7! Nxg7 20.Rd7 Qc8 21.Bxh6 is very strong. White chooses a different but equally strong idea... 19.a5 b6 20.axb6 20.Nd6! is close to winning. 20...axb6 21.Rxa8 Rxa8 22.Rd3 Rd8 23.Qg3 Rxd3 24.cxd3 c5?! Dubious. Black counts on the simplified positions arising to save himself but there was no need to panic. Just 24...Nf6 redeveloping was fine. 25.d4 exd4 26.Qxc7 Nxc7 27.cxd4 Nf6 28.f3 Nd7 29.dxc5 bxc5 30.Kf2 h5 31.Nd6 Kg8 32.Ke2 Kf8 33.f4 g6 34.Kd3 Ke7 35.Nb7 Now White wins a pawn, but Black is actually quite close to saving himself... 35...f5! 36.Bxc5+ Nxc5+ 37.Nxc5 fxe4+ 38.Kxe4 Kf6

I think this is drawn, and certainly put in little effort trying to win it. 39.g3 Ne8 40.g4 hxg4 41.hxg4 g5 Good timing. Now 42.f5 Nd6+ and 43...Nxf5. 42.Nd3 gxf4 43.Kxf4 Nd6 44.g5+ Kg7 45.Ne5 Nf7 46.Nxf7 Kxf7 47.Kf5 Kg7 48.g6 Kg8 49.Kf6 Kf8 50.g7+ Kg8 51.Kg6

Stalemate. 1/2-1/2

(5) Mar,Craig - Whitehead,Paul [D01]
Paul Masson Class Championships, 1979

This is not one of Craig's best games. Perhaps it was the wine and the heat... 1.d4 Nf6 2.Nc3 d5 3.Bg5 Nbd7 4.Nf3 c5 5.Bxf6 This seems dubious. 5...Nxf6 6.dxc5 e6 7.Qd4 Bd7 8.e3 Rc8 Black is already better. 9.c6 bxc6 10.Qxa7 Rb8 11.Bd3 Bd6 12.0-0 0-0 13.e4 e5

Black is close to winning here. 14.Qa6 Qc7 15.exd5 cxd5 16.Nb5 Bxb5 17.Bxb5 e4 Now it gets really ugly. 18.Ng5 Bxh2+ 19.Kh1 Ng4 20.Be2 Bg1

Flashy! 21.f4 exf3 22.Nxf3 Be3

...Rb6 is coming up. 0-1

(6) Whitehead,Paul - Mar,Craig [C41]
Northern California Ch., S.F., 1987

A smooth and forceful win by White. 1.e4 e5 2.Nf3 d6 3.d4 Nf6 4.Nc3 Nbd7 5.Bc4 Be7 6.0-0 0-0 7.Re1 c6 8.a4 a5 9.h3 h6 10.Ba2 Re8 11.Be3 Bf8 12.Qd2 Qc7 13.Rad1 Black has lost almost every game in the databases from this position... 13...exd4 14.Bxd4 Ne5 15.Qf4 Nfd7 15...Bd7 developing! seems best here. 16.Re3 Nf6?! 17.g4 Bd7 18.g5 Diagram

Now 18...Nh5 19.Qh4 g6 is neccessary. 18...hxg5 19.Nxg5 Be6 20.Nxe6 fxe6 21.Kh1 Nh7 22.Rg3 Rad8 23.Rdg1 Rd7 24.Qe3 White is winning. 24...c5 25.Bxe5 dxe5 26.Rg6 Qb6 27.Nb5 Rf7 28.Qg3 Ree7 29.Qxe5 Rxf2 30.Bxe6+ Kh8 31.Nd6 Qd8 32.Nf5 Qc7 33.Qxc7 Rxc7 34.R6g2 Rxg2 35.Rxg2 Nf6 36.e5 Nh5 37.Bc4 Nf4 38.Rg4 g6 39.Rxf4 gxf5 40.Rxf5 Bg7? 41.Rh5+ Bh6 42.Rxh6+ Kg7 43.Rd6 Re7 44.e6 Diagram


GM Nick de Firmian’s Opening Lab

This week: The Orangutan, 1. b4

We continue with the topic of unusual openings. This week’s subject is 1. b4, which is know as the Orangutan or other times called the Sokolsky Opening or the Polish Attack. It was Tartakover in the early 20th Century who dubbed it the humorous name Orangutan. There is a sort of sprawling, swinging feel to the opening that fits the image of that name. We must inform our readers that the best way to see this opening in action is to come play in the weekly Wednesday evening blitz tournaments that begin at 6:30 pm. Our intrepid blitz chess tournament director, Jules Jelinek, is a true devotee of the opening and has notched many victories with it (along with a few loses).


1. b4

White’s first move allows the development of the dark squared bishop on the long a1-h8 diagonal, the same as in Larsen’s Opening (1.b3). Yet the Orangutan also seizes queenside space, giving the game a different character than the more restrained 1.b3. One of the main ideas of the opening is that the flank pawn on b4 can be traded off for Black’s c-pawn or a center pawn, giving White more control over the center squares. If Black chooses 1...d5 2. Bb2 e6 3. Nf3

play transposes to a classic game in which the great Alexander Alekhine illustrated the potential of the White side.

(2) Alekhine,Alexander - Drewitt,John Arthur [A00]
Portsmouth, 1923

1.Nf3 d5 2. b4 e6 3. Bb2 Nf6 (not 3...Bxb4? 4 Bxg7) 4. a3 c5?! 5. bxc5 Bxc5 6. e3 O-O 7. c4 Nc6 8. d4 Bb6 9. Nbd2 Qe7

Here White has achieved the strategic goal of the opening. The extra control of the center that the c-pawn exerts leaves White with an opening advantage and an easy game to play. 10. Bd3 Rd8 11. O-O Bd7 12. Ne5! Be8 13. f4 Rac8 14. Rc1 nd7?! It’s hard to fight against the centralized white pieces and pawn. 15. Nxc6! Rxc6?! 16. c5 Nxc5 (16... Ba5 17. Nb3 Bc7 18. Bb5 is also losing) 17. dxc5 Bxc5 18. Rf3! Bxa3 19. Rxc6 Bxc6

20. Bxh7+! Kxh7 21. Rh3+ Kg8 22. Bxg7!

Black resigned since 23...Kxg7 24. Qg4+ mates. He could try 22... f6 but 23. Bh6 is a crushing attack. 1-0


The most straightforward first move for Black is to advancing the e-pawn two squares. 1. b4 e5 2. Bb2 Bxb4 3. Bxe5 Nf6

Here White has an extra center pawn while Black has quick development. Typical play could continue: 4. e3 0-0 5. Nf3 Nc6 6. Bb2 d5

with chances for both sides. Yet devotees of the opening prefer to play the White side with the long-term promise of extra central control.


What is an easy way for Black to respond to 1. b4? As with all these unusual openings I have a recommendation for the readers. Black can try: 1.b4 e6 2. Bb2 Nf6 3. b5 (on 3. a3 b6 4. Nf3 c5! 5. bxc5 bxc5 6. c4 Bb7 7. e3 the position is symmetrical with Black to move, White having wasted time with pawn to a3) 3...c5! 4. e3 b6 5. Nf3 Bb7 6. c4 d5 7.d4 Nbd7 8. Nbd2 Bd6 9. Be2 0-0

Black has at least equal chances in a somewhat symmetrical position due to good control of the center.

TNM Games Round 2

Annotations by IM Elliot Winslow

(1) Childress,Jason (2058) - Wolff,Patrick (2623) [B07]
Mechanics' Spring TNM: 2000+ San Francisco (2.1), 26.03.2019

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be3 c6 5.Qd2 b5 [5...Nbd7] 6.Bd3 Nbd7 7.f3 [7.Nf3!] 7...Bb7 8.Nh3 [8.Nge2 a6 , when ...c5 might embarrass that B/d3; 8.0-0-0] 8...e5 In the Mega database the only move with a plus score, thanks to one errant game... [8...Qc7; 8...Bg7] 9.dxe5 [9.0-0 Bg7 (9...exd4 10.Bxd4 Bg7 11.a4 b4 12.Ne2 a5 13.c3 Ne5 14.c4 0-0 15.b3 Nxd3 16.Qxd3 d5 17.cxd5 cxd5 18.e5 Nd7 19.f4 Qe7 20.Qe3 Ba6 21.Rfe1 Rfe8 22.Ng3 f5 23.Ng5 Rac8 24.Rac1 h6 25.Nf3 Rxc1 26.Rxc1 Qe6 27.h4 h5 28.Ng5 Qe7 29.Rc6 Bb7 1-0 (29) Mencinger,V (2365)-Orel,O (2320) Slovenia 1991) 10.d5 cxd5 11.Nxb5 Nc5 12.exd5 a6 13.Nc3 Nxd3 14.Qxd3 0-0 15.Nf2 Nh5 16.Ne2 f5 17.c4 Bc8 18.Rad1 Rb8 19.b3 g5 20.Bd2 Nf4 21.Nxf4 gxf4 22.b4 Bd7 23.Qc2 Be8 24.Bc3 Rc8 25.Qb3 Qc7 26.c5 dxc5 27.bxc5 Qxc5 28.Bb4 Qc4 29.Bxf8 Qxb3 30.axb3 Kxf8 31.d6 Rd8 32.Rd2 Kf7 33.Rc1 Bf8 34.Rc7+ Ke6 35.Nh3 Bxd6 36.Ng5+ Kf6 37.Nxh7+ Kg6 38.Nf8+ Kf6 39.Nh7+ Kg6 40.Nf8+ Kf6 41.h4 Bxc7 0-1 (41) Sedy,P (2248)-Pribyl,M (2296) Czechia 2007; 9.Ne2 h5 10.0-0 exd4 11.Nxd4 Ne5 12.Rac1 Nc4 13.Bxc4 bxc4 14.Qc3 Qe7 15.Rce1 Bg7 16.Qxc4 0-0 17.Nxc6 Qc7 18.Ne5 Qxc4 19.Nxc4 Ba6 20.Nxd6 Bxf1 21.Kxf1 Rfd8 22.Nc4 Rac8 23.b3 a6 24.Bg5 Rd4 25.Bxf6 Bxf6 26.Nf2 a5 27.Nd3 a4 28.Ke2 axb3 29.axb3 Ra8 30.Ke3 Rdd8 31.e5 Be7 32.Re2 Rdb8 33.f4 Ra1 34.h3 Kf8 35.g4 Rh1 36.Rf2 Rxh3+ 37.Rf3 hxg4 38.Rxh3 gxh3 39.Kf3 Bh4 40.Nf2 h2 41.Nh1 Ra8 42.Kg2 Ra2 43.Ne3 Be1 44.Kxh2 Bd2 45.Nd5 Rxc2 46.Kg3 Rc1 47.Nf2 Be1 48.Kf3 Rb1 49.b4 Bxb4 50.Nxb4 Rxb4 51.Ne4 Ke7 52.Nf6 Ke6 53.Kg4 Rb1 54.Ne4 Rg1+ 55.Kf3 Kd5 56.Nc3+ Kc6 57.Ne4 Kd7 58.Nc5+ Ke7 59.Nd3 Ra1 60.Nc5 f6 61.exf6+ Kxf6 62.Ne4+ Ke6 63.Ng3 Rb1 64.Kg4 Rg1 65.Kf3 Rb1 1/2-1/2 (65) Cebollada Pacheco,J (1981)-Garcia Ramon,R (2132) Aragon 2005] 9...dxe5 10.0-0 [10.Bh6 Bxh6 11.Qxh6 Qe7 12.0-0 a6 13.a4 Qf8 14.Qd2 Qc5+ 15.Kh1 0-0 16.Qh6 Rfe8 17.Ne2 Qf8 18.Qh4 Qg7 19.f4 exf4 20.Rxf4 h6 21.Rf2 g5 22.Qg3 Nc5 23.Rf5 Ncxe4 24.Bxe4 Nxe4 25.Qb3 Bc8 26.Nd4 Nd6 27.Rff1 Qxd4 28.Rad1 Qc4 29.Qf3 Bg4 30.Qf6 Re6 0-1 (30) Jovanovic,V (2035)-Krupkova,P (2210) Bratislava 1993] 10...Bc5 Stockfish's preference, but even so it has White bordering on a clear advantage. 11.Rfd1 [11.Nd1!?] 11...Qb6 12.Bxc5 Nxc5 13.Kh1 a5 14.Qg5 Nfd7 15.Rd2 h6 16.Qh4 Qd8 17.Qf2 0-0 18.Rad1 Qe7 19.Qe3 Kg7 20.Bf1 Nf6 21.Rd6 Ne6 22.Ne2 c5 23.R6d2 b4 24.Nc1 Rfd8 25.Bc4 Rd4 26.Bxe6 Qxe6 27.Nb3 Rc8 28.Nxd4 cxd4 29.Qb3 Qb6 30.a3 Nd7 31.axb4 axb4 32.c3 bxc3 33.Qxb6 Nxb6 34.bxc3 dxc3 35.Rc2 Na4 36.Rdc1 Ba6 37.Nf2 Bc4 38.Rb1 Ra8 39.h3 h5 40.Rb4 Be6 41.Nd1 h4 42.Rc1 Kh6 43.Nxc3 Nxc3 44.Rxc3 Ra5 45.Rb2 Kg5 46.Kg1 Kf4 47.Kf2 Ra1 48.Rc6 Rd1 49.Ke2 Rg1 50.Kf2 Rd1 51.Ke2 Rg1 52.Kf2 Rd1 1/2-1/2

(2) Stearman,Josiah P (2387) - Kondakov,Adrian (2066) [C54]
Mechanics' Spring TNM: 2000+ San Francisco (2.2), 26.03.2019

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.d3 d6 6.a4 a5 7.0-0 Ba7 8.Na3 0-0 9.Nc2 h6 10.Be3 Re8 11.Bxa7 Rxa7 12.Ne3 Be6 13.Bb5 Bd7 14.Qb3 Nb8 15.Rfe1 Be6 16.Qa3 c6 17.Bc4 Qc7 18.Rac1 [18.Bxe6 Rxe6 19.d4] 18...Nbd7 19.Bxe6 Rxe6 20.Nf5 Kh7 [20...Nc5] 21.d4 g6?

A subtle loss of time [21...Ra8= 22.Rcd1+/= (22.Nxd6 Rxd6 23.dxe5 Nxe5 24.Nxe5 Re6 25.f4 Nh5 26.g3 g5) ] 22.Ng3? [22.Nxd6!+/- Rxd6 23.dxe5 Nxe5 24.Nxe5 Re6 25.f4 Ra8 (25...g5 26.fxg5 Qxe5 27.gxf6) 26.Qc5 Rd8 27.Qe3] 22...Ra8 23.c4?! exd4 24.Nxd4 Re7 25.Qe3 Ne5?! 26.Qf4 [26.h3] 26...Ng8 [26...Ne8] 27.Red1 Rae8 [27...Ree8] 28.h3 Qb6 29.b3 Qb4 30.Qe3 Nd7 31.f3 Qc5 32.Rc2 Qe5 33.Nde2 Ngf6? 34.Rcd2+/- Qc5 35.Qxc5 dxc5 36.f4 Nf8? [36...h5] 37.e5 Ng8 38.Rd6 [38.Ne4! Octopus!] 38...Re6? [38...f6 39.f5! (39.exf6 Rf7) ] 39.Ne4 Rxd6 40.Rxd6 Ne6 41.Kf2 Kg7 42.g4 Kf8 43.h4 Ne7 44.Ke3 [44.Rd7] 44...Nc8 45.Rd7 Re7 46.Rd1 b6 47.Nf6 Kg7 48.Ke4 Na7 49.f5 Nc7 50.Rd8 gxf5+ 51.Kxf5 1-0

(3) Shapiro-Erciyas,Ahmet (2134) - O'Connor,Derek (2349) [D02]
Mechanics' Spring TNM: 2000+ San Francisco (2.3), 26.03.2019

1.d4 Nf6 2.Bf4 d5 3.e3 c5 4.c3 Nc6 5.Nf3 Qb6 6.b3 Bf5 7.Be2 e6 8.0-0 h6 9.a3N Be7 10.b4N cxd4 11.exd4 [11.cxd4] 11...0-0 12.Nbd2 Rfc8 13.a4 a5 [13...Nh5 14.Be3 Qc7] 14.b5 Nb8 15.c4 dxc4 16.Nxc4 Qd8= 17.Qb3 [17.Ne3 Be4 18.Ne5 Nbd7 19.Bf3] 17...Nd5 18.Bg3 Nd7 19.Nfe5 N7f6 20.Bf3 Ne4 21.Bxe4 Bxe4-/+ 22.Rfe1 Bf5 23.Nf3?! Nb4-+ 24.Ne3 Bc2 25.Nxc2 Nxc2 26.Red1 Nxa1 27.Rxa1 Qd5 28.Qe3 Bf6 29.Ne5 Rd8 30.Rd1 Rac8 31.Qe1 Bxe5 32.Bxe5 f6 33.Bf4 e5 34.Be3 b6 35.Rd2 e4 36.f3 exf3 37.gxf3 Qxf3 38.Rf2 Qe4 39.Qd2 Re8 40.Bxh6 Qg6+ 41.Rg2 Qb1+ 0-1

(4) Anderson,Michael (1943) - Diaz,Conrado (2343) [B21]
Mechanics' Spring TNM: 2000+ San Francisco (2.4), 26.03.2019

1.e4 c5 2.d4 cxd4 3.c3 dxc3 4.Nxc3 Nc6 5.Nf3 d6 6.Bc4 e6 7.0-0 Nge7 8.Bg5 a6 9.Bb3 h6 10.Be3 b5 11.Qe2 Na5 12.Rfd1 Qc7 13.Rac1 Qb8 14.Nd5 exd5 15.exd5 Nxb3 16.axb3 Bg4 17.Bd4 f6 18.Qe4 Bf5 19.Qe3 Kf7 20.Bb6 Qe8 21.Nh4 Bd7 22.Qf3 g5 23.Rd4 gxh4 24.Qh5+ Kg8 25.Rg4+ Bxg4 26.Qxg4+ Qg6 27.Qe6+ Qf7 0-1

(5) Argo,Guy (1909) - Shaw,Tenzing (2287) [C02]
Mechanics' Spring TNM: 2000+ San Francisco (2.5), 26.03.2019

1.e4 e6 2.d4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Bd7 6.Be2 Nge7 7.0-0 Ng6 8.Re1 Be7 9.g3 0-0 10.Bf1N [10.h4 cxd4 11.cxd4 f6 12.h5 Nh8 13.Nc3 fxe5 (13...Nf7!) 14.dxe5 Be8 15.h6 g6 (15...g5!?) 16.Nb5 Bd7 17.a3 Nf7 18.Bd3 Rc8 19.Bf4 a6 20.Nc3 Kh8 21.Nxd5 exd5 22.e6 Bf6 23.Qb3 g5 24.Qxd5 Ne7 25.Qe4 Ng6 26.exd7 Qxd7 27.Be3 Rce8 28.Qf5 Qxf5 29.Bxf5 Nxh6 30.Bd7 Ne5 31.Nxe5 Rxe5 32.Red1 Nf5 33.Bb6 Ne7 34.Rd2 Nc6 35.Bxc6 bxc6 36.Rc1 Re6 37.b4 Rb8 38.Be3 Rb5 39.Rdc2 a5 Pruijssers,R (2511)-Nikolic,P (2605) Germany 2014 1-0] 10...Qb6 11.dxc5? [11.h4] 11...Bxc5 12.Qe2

12...Ngxe5! 13.Nxe5 Nxe5 14.Qxe5 Bxf2+ 15.Kh1?! I was sure this was right, but [15.Kg2 is Stockfish 10's preference, still plus Black] 15...f6?! [15...Bxe1! 16.Qxe1 e5! untakable of course] 16.Qe2 Bxe1 17.Qxe1 e5 18.b3?! [18.Qe3] 18...Bc6! 19.h3 Rfd8?! [19...f5!; 19...Rae8] 20.Kh2 a5?! 21.Be3 d4 22.Bf2 a4 23.b4 Bb5 24.c4 Bc6 25.c5 [25.b5= pushes the bishop off the diagonal] 25...Qc7 26.Nd2 Qd7= [26...d3] 27.Rc1? [27.Bc4+ Kh8 28.Ne4=] 27...Qf5? [27...d3 and ...Qd5] 28.Bc4+?! [28.g4! Qg5 29.Bc4+ Kh8 30.b5 Bd5 31.Bxd5 Rxd5 32.Ne4+/=] 28...Kh8 29.b5 Bd5 30.Bxd5 Rxd5 31.Ne4 Qf3-/+ 32.Qh1 Qe2-+ 33.Re1 Qxa2 After all that center action, it's the a-pawn? 34.Nd6?? Qxf2+ 0-1

(6) Li,Eric Yuhan (2228) - Sloan,Sam (1910) [A40]
Mechanics' Spring TNM: 2000+ San Francisco (2.6), 26.03.2019

1.d4 e5 2.dxe5 Nc6 3.Nf3 Qe7 4.Nc3 Nxe5 5.Nd5 Nxf3+ 6.gxf3 Qd8 7.e4 c6 8.Ne3 g6 9.Qd4 f6 10.Bc4 Bg7 11.Bb3 Qe7 12.Qd3 Nh6 13.Bd2 Nf7 14.0-0-0 0-0 15.h4 d6 16.h5 g5 17.h6 Bh8 18.Bb4 Rd8 19.Bxd6 Qe8 20.Nf5 Bxf5 21.exf5 c5 22.Rhe1 Qc6 23.Bxf7+ Kxf7 24.Qc4+ 1-0

(7) Hakobyan,Sos (1829) - Wong,Russell (2200) [A25]
Mechanics' Spring TNM: 2000+ San Francisco (2.7), 26.03.2019

1.c4 e5 2.Nc3 Nc6 3.g3 Bc5 4.Bg2 d6 5.e3 f5 6.Na4 Nf6 7.Ne2 0-0 8.0-0 a6 9.Nxc5 dxc5 10.Bxc6 bxc6 11.d3 Qd6 12.Qc2 Rd8 13.Rd1 e4 14.d4 Ng4 15.Kg2 Ne5 16.b3 Nf3 17.Bb2 Qh6 18.Rh1 cxd4 19.Bxd4 c5 20.Bc3 Bb7 21.h4 Rd3 22.Nf4 Rad8 23.Rad1 Qd6 24.Rc1 Qe7 25.Nh5 Qf7 26.Nf4 h6 27.a4 R3d6 28.h5 Qe7 29.b4 Rb6 30.a5 1-0

(8) Griffith,Kyron (2452) - Boldi,Ethan Kazanjian (2058) [B22]
Mechanics' Spring TNM: 2000+ San Francisco (2.8), 26.03.2019

1.e4 e6 2.d4 d5 3.Nd2 c5 4.Ngf3 Nc6 5.exd5 exd5 6.Be2 Bd6 7.dxc5 Bxc5 8.Nb3 Bd6 9.0-0 Nge7 10.c3 0-0 11.Nbd4 Bd7 12.Re1 a6 13.Be3 Qc7 14.h3 Rae8 15.Nxc6 Bxc6 16.Nd4 Bd7 17.Bd3 Bf4 18.Qf3 Bxe3 19.Rxe3 Qd6 20.Rae1 Nc6 21.Nxc6 Bxc6 22.Qg4 Bd7 23.Qd4 Re6 24.Rxe6 fxe6 25.Re5 Rf6 26.f4 b5 27.f5 Bc6 28.b4 exf5 29.Bxf5 g6 30.Bg4 Kg7 31.Re6 Qf4 32.Qxf4 Rxf4 33.Rxc6 d4 34.cxd4 Rxd4 35.a3 a5 36.bxa5 Ra4 37.Rc3 Rxa5 38.Rb3 Ra7 39.Be2 b4 40.axb4 h5 41.b5 Kf6 42.b6 Rb7 43.Bf3 Rb8 44.b7 Kg5 45.Rb5+ Kh4 46.Kh2 Rxb7 47.g3# 1-0

(9) Lehman,Clarence E (1918) - Chambers,Ezra (2336) [B00]
Mechanics' Spring TNM: 2000+ San Francisco (2.9), 26.03.2019

1.e4 Nc6 2.Bc4 Nf6 3.Nc3 e6 4.d3 d5 5.Bb5 Bb4 6.Bd2 0-0 7.Bxc6 bxc6 8.e5 Nd7 9.Nf3 f6 10.a3 Be7 11.Nd4 Nxe5 12.f4 c5 13.Nf3 Nxf3+ 14.Qxf3 Rb8 15.Nd1 e5 16.0-0 c6 17.Qe2 Bd6 18.Kh1 Ba6 19.b4 c4 20.Nb2 cxd3 21.cxd3 Re8 22.Qf2 Qb6 23.Rac1 Qxf2 24.Rxf2 Rec8 25.Be3 d4 26.Bd2 c5 27.Nc4 Bxc4 28.Rxc4 cxb4 29.Rxc8+ Rxc8 30.axb4 Bxb4 31.Kg1 a5 32.fxe5 fxe5 33.g3 Rc2 34.Bxb4 Rxf2 35.Kxf2 axb4 36.Ke2 Kf7 37.Kd2 Ke6 38.h3 Kd5 0-1

(10) Munkhchuluun,Tsegmed (2125) - Pane,Gianluca (1863) [D10]
Mechanics' Spring TNM: 2000+ San Francisco (2.10), 26.03.2019

1.d4 d5 2.c4 c6 3.Nc3 [3.Nf3 dxc4!? (3...Nf6; 3...e6) 4.e3 Be6 (4...b5 5.a4 e6 6.axb5 (6.b3; 6.Nc3 Bb4 is the wild Noteboom Variation) 6...cxb5 7.b3 Bb4+ 8.Bd2 Bxd2+ 9.Nbxd2 a5 10.bxc4 b4 is the Noteboom's little brother) ] 3...dxc4!? [3...Nf6; 3...e6; 3...e5!? 4.dxe5 d4 is related to the Albin Countergambit] 4.a4 [4.e3 b5 (4...Be6?! 5.Nf3 (5.a4; 5.Nge2!?) 5...b5 6.a4 (6.Be2!?) ) ; 4.e4 b5 5.a4 b4 (5...a6!? 6.axb5 cxb5 7.Nxb5 axb5! 8.Rxa8 Bb7 9.Ra1 (9.Ra2!) 9...e6!? is a quixotic gambit that various top players were playing a lot a few years ago) 6.Nce2!? (6.Na2) ] 4...e5!? 5.e3 [5.dxe5 Qxd1+ 6.Kxd1 Na6 7.e4 Be6 1/2-1/2 (28) Azmaiparashvili,Z (2660)-Gulko,B (2615) San Roque 1996 CBM 057 [Huebner,R]] 5...exd4 6.exd4 Be6 7.Nf3 Nd7 [7...Nf6 has a solid plus score in the database] 8.Bf4 Ngf6 9.Be2 Bb4 [By now we're reduced to one reference, a coupld B-players (0-1 40) 9...Be7] 10.0-0 0-0 11.Qc2 Qa5 12.Be5 Bxc3 13.bxc3 Bd5 14.Bxf6 Bxf3 15.Bxf3 Nxf6 16.Rab1 Rab8 17.Rb4 Nd5 18.Rxc4 Nb6 19.Rc5 Qxa4 20.Qf5 Rfe8 21.h4 Nc4 22.Qf4 Rbd8 23.h5 h6 24.g4 f6 25.Rb1 Ne5 26.Bd1 Qa2 27.Bb3+ Qxb3 28.Rxb3 Nd3 29.Qf5 Nxc5 30.Qxc5 Re4 31.f3 Re3 32.Kf2 Rde8 33.Qc4+ Kf8 34.Rxb7 1-0

(11) Jensen,Christian (1815) - Davila,Carlos (2075) [E11]
Mechanics' Spring TNM: 2000+ San Francisco (2.11), 26.03.2019

1.d4 Nf6 2.c4 e6 3.Nf3 Bb4+ 4.Nbd2 d5 5.a3 [5.Qa4+ Nc6 6.a3 scores quite a bit better (6.e3) ] 5...Be7 6.e3 c5 7.b3 0-0 8.Bd3 Nc6 9.Bb2 a6 Muddy water fishing 10.0-0 b6 11.Qe2 Bb7 12.Rfd1 Re8 [12...cxd4 13.Nxd4 Nxd4 14.Bxd4 Rc8 15.Nf3 a5 16.Qb2 Bc5 17.cxd5 Bxd4 18.Nxd4 Nxd5 19.Nb5 Qe7 20.Rac1 Rxc1 21.Rxc1 Rc8 1/2-1/2 (21) Ardelean,G (2485)-Stanciu, A (2356) Baile Felix 2011] 13.Rac1 0-1

(12) Winslow,Elliott C (2306) - Melville,Cailen J (1941) [A84]
Mechanics' Spring TNM: 2000+ San Francisco (2.12), 26.03.2019

1.d4 e6 2.Nf3 [2.c4 Bb4+ 3.Bd2 a5 4.Nf3 f5 5.Nc3 Nf6 6.g3 b6 7.Bg2 Bb7 8.0-0 was the move order of our last game reference, Bagamasbad-Dimakiling, Penang 2013] 2...b6 3.g3 Bb7 [3...Nf6 4.c4 For the record: as of Mega 2019, 4...Ba6!? is now the most popular move here by a few games, well 200+, 20215 vs. 20001, (over 4...Bb7) ] 4.Bg2 f5 [4...Nf6 5.0-0 Be7 6.c4 0-0 7.d5!? (7.Nc3 Ne4 8.Qc2 (8.Bd2! still is seen, at the top even (as in Carlsen, Aronian, So, Nakamura, Ivanchuk playing thus) 8...Nxc3 9.Qxc3 was how I got myself to sleep back in 1966. Oh look, Giri - Eljanov, 2017...) ; 4...c5!?] 5.0-0 Nf6 6.c4 Ah, database trolling... In this position SIXTEEN moves have made it in. Perhaps that it has happened well over a thousand times (!) could have something to do with it. I mentioned after the game how, with the pawn back on f7, we'd be in the old main line of the Queen's Indian. Somehow I read through the tournament book of the First Piatigorsky Cup (1963), where this line happened all too often, and was impressed at how boring the games were. That Black can basically do whatever he wants tells you something about White's play. On the other hand, that opening (with the pawn back on f7 -- give Black . ..Be7 and ...0-0 to catch up) was the launching pad for a number of amazing games via 8.d5!? -- including one of the first Alpha Zero brilliancies to confound us all in 2018. 6...a5 Might as well amuse myself by mousing them all in (note that 6...a5 whittles down the game count considerably): [6...Be7; 6...g6; 6...Bd6; 6...a5; 6...d6; 6...c5; 6...d5; 6...Qc8; 6...Na6; 6...c6; 6...h6; 6...Nc6; 6...Ne4; 6...Bb4; 6...Bxf3; 6...Qe7] 7.Nc3 [Here also, 7.d5!? causes confusion in the ranks for Black.] 7...Bb4 8.Bd2 [8.Qc2; 8.d5!? still! 8...Bxc3 9.bxc3 0-0 10.Nd4 Qe7 11.a4 Na6 12.d6 1-0 (12) Lu,Yang-Hammer,Jon Ludwig (2074), Internet Section 07A g/ 8'+2", Dos Hermanas 2004! Yes, THAT Jon Ludwig Hammer, who made GM in 2009 and has been Carlsen's main second for various world championship matches. Come on, it's a blitz game! He was thirteen! (These days no excuse) And what is this doing in the database? Weighting the statistics no doubt!] 8...0-0 9.Rc1 [After the game Cailen mentioned 9.b3!? to tuck the bishop back to b2 after an exchange on c3 and ...Ne4, as well as to play a2-a3 without getting freezed out after ...a5-a4. 9...Qe7 10.Nb5 c6 11.Nc3 d6 12.a3 Bxc3 13.Bxc3 Ne4 14.Bb2 c5 15.Nd2 Nd7 16.Nxe4 fxe4 17.Qd2 d5 18.cxd5 exd5 19.a4 Qe6 20.Rfd1 Rf7 21.Qe3 Rc8 22.Rac1 h6 23.f3 Re8 24.fxe4 dxe4 25.Ba3 Nf6 26.dxc5 Ng4 27.Qc3 bxc5 28.Bxc5 Rc8 29.Qxa5 Kh7 30.Qb6 Qe5 31.Bd4 Qh5 32.h3 Nf6 33.Bxf6 gxf6 34.Rxc8 Bxc8 35.Bxe4+ f5 36.Bg2 Qxe2 37.Rd6 1-0 (37) Lenderman,A (2565)-Eljanov,P (2734) Tbilisi 2017] 9...Bxc3 [9...Na6 10.a3 Bxc3 11.Bxc3; 9...Ne4] 10.Bxc3 Ne4 [10...Qe8 11.d5 Na6 12.Ne5 d6 13.Nf3 e5 14.Qc2 Qh5 15.Nh4 Ng4 16.h3 Nh6 17.Bf3 Qe8 18.Bd2 e4 19.Bxh6 Nb4 20.Qd2 exf3 21.exf3 gxh6 22.Qxh6 Qf7 23.Rce1 Bc8 24.Re2 Qg7 25.Qh5 Nd3 26.Re3 Nf4 27.Qe8 Rxe8 28.Rxe8+ Kf7 29.Rfe1 Ng6 30.Nxf5 Bxf5 31.Rxa8 Qxb2 32.Ra7 Qd2 33.Rxc7+ Kf6 34.Re3 Bxh3 35.g4 Qd1+ 36.Kh2 Qf1 37.Re6+ Kg5 38.f4+ Kxg4 0-1 (38) Chau,S (2055)-Matthews,S (2239) Bled 2002] 11.d5 Na6 [11...Nxc3 12.Rxc3 Na6 13.dxe6 dxe6 14.Ne5 Bxg2 15.Kxg2 Nc5 16.Rc2 Qe8 17.Rd2 Rd8 18.e3 Rxd2 19.Qxd2 Qa8+ 20.f3 Rd8 21.Qc2 Rd6 22.Rd1 Qd8 23.Nc6 Qd7 1/2-1/2 (23) Polak,P (2175)-Kout,Z Prague 1996] 12.a3 Anyway! Since ...a4 is off. 12...Nac5 13.b4 Nxc3 14.Rxc3 Ne4 [14...axb4 15.axb4 Ne4 16.Rc1 (feh) 16...exd5 17.cxd5 Ra3 18.Qd4 c5 19.dxc6 dxc6 20.Rfd1 Qxd4 21.Nxd4 Nc3 22.Re1 c5 23.Nc2 Ra7 24.bxc5 bxc5 25.Ne3 Na4 26.Bxb7 Rxb7 27.Rc4 Rb4 28.Rec1 g6 29.Nd5 Rxc4 30.Rxc4 Ra8 31.e4 fxe4 32.Nf6+ Kf7 33.Nxe4 Ra5 34.h4 Stockfish rather likes White's game -- especially since 34...Ke6?? runs into 35.Rxa4! 1-0 (51) Bagamasbad,E (2180)-Dimakiling,O (2376) Penang 2013] 15.Rd3 making way for a later Rfb1! (heh) 15...exd5 16.cxd5 axb4 17.axb4 Qf6 18.Qc2 Ba6 19.Ra3

He hadn't noticed this -- and panic seems to affect him. It's should only be superficially annoying. 19...Bb7? [19...Rfc8 20.Rfa1 Bb7 21.Rxa8 Bxa8 22.Ra7 Bxd5 (22...Qd6 23.Nd2 Bxd5 24.Nxe4 fxe4 25.Bxe4 Bxe4 26.Qxe4 c5 27.Qb7+/=) ; But I don't have anything after 19...Bb5 (I'm pretty sure I missed this during the game) 20.Rxa8 Rxa8=] 20.Rxa8 Rxa8 [20...Bxa8 21.Qxc7 Bxd5 22.Ne5!?] 21.Qxc7 Bxd5 22.e3?! I liked this move, to consolidate (hah!) and leave him with weaknesses [22.Qxd7!? Rd8 23.Qc7+/-; 22.Rd1!? Nc3 23.Ne5! Bxg2 24.Qxc3+/- Re8 25.Rxd7 Qxe5 26.Qxe5 Rxe5 27.Kxg2 Re4 (27...Rxe2 28.Rd6) 28.Rd5 g6 29.Rb5 Re6 30.e3] 22...Qc6 23.Qe5

23...Nd2?? We were both hooked on this [23...Nc3! 24.Nd4 (24.Re1!?) 24...Ne2+! 25.Nxe2 Bxg2 26.Nd4 Qe4! 27.Qxe4 Bxe4 28.f3 Bd3 29.Rd1 (29.Rc1 Kf7) 29...Ra3 is all "0.00" (i.e. dead equal)] 24.Nd4!+- (what he missed) 24...Bxg2 25.Nxc6 Bxc6 26.f3 [26.f4! is even "winninger" according to Stockfish 26...Nxf1 27.Kxf1 Be4 28.g4] 26...Bxf3? [26...Nxf3+ 27.Rxf3 Bxf3 28.Qxf5?! (28.Qd4!; 28.Qd6; 28.Qb5) 28...Bc6 29.e4 b5; 26...Nxf1 27.Kxf1 b5 28.Ke2] 27.Rf2 Nc4 28.Qd4 1-0

(13) Tsodikova,Natalya (2185) - Walder,Michael (1989) [A48]
Mechanics' Spring TNM: 2000+ San Francisco (2.13), 26.03.2019

1.d4 Nf6 2.Bf4 g6 3.e3 Bg7 4.Nf3 0-0 5.Be2 d6 6.0-0 c5 7.c3 b6 8.h3 Bb7 9.Nbd2 Nbd7 10.Re1 Rc8 11.a4 a6 12.Bh2 Rc7 13.Bd3 Qa8 14.e4 cxd4 15.cxd4 Rcc8 16.Qe2 Ne8 This is actually happened a handful of times! 17.e5?!N [17.Rac1; 17.Qe3; 17.Bf4 have all been played and done well (I won't bring up the other moves that have been played here!] 17...dxe5 18.dxe5 Nc5 19.Bc4 Nc7 20.b4 N5e6 21.Qe3 Rfd8 [21...Nd5 22.Bxd5 Bxd5 23.Qxb6? Bh6-+] 22.Red1 Nd5 23.Qb3 Bh6 24.Ne4 Ndc7?

[24...Ndf4!-/+] 25.Nd6! Bxf3 26.gxf3 exd6? [26...Ng5?! 27.Bxf7+ Kg7 28.Kg2; 26...Rb8=] 27.exd6+/- Ng5? [27...Bf4 28.dxc7 Bxh2+ 29.Kxh2 Rxc7 30.Bxe6 fxe6 31.Qxe6+ Rf7 32.Rxd8+ Qxd8 33.Rc1 Qd4 34.Kg2 Qxb4+/-] 28.dxc7+- Rf8 [28...Nxf3+ 29.Qxf3] 29.Bd5 Qa7 30.f4 Ne6 31.Bxe6 fxe6 32.Qxe6+ Kh8 33.f5 Rce8 34.Qxe8 Rxe8 35.Rd8 Qa8 36.Rxa8 Rxa8 37.Rd1 Bg5 38.Be5+ 1-0

(14) Uzzaman,Ashik (1931) - Ivanov,Aleksander (2171) [B23]
Mechanics' Spring TNM: 2000+ San Francisco (2.14), 26.03.2019

1.e4 c5 2.Nc3 Nc6 3.f4 g6 4.Nf3 Bg7 5.Bb5 Nd4 6.0-0 [6.Bc4; 6.Bd3] 6...Nxb5 [6...a6; 6...e6] 7.Nxb5 d5 [7...d6] 8.exd5 a6 9.Nc3 Nf6 10.d4 Nxd5 11.dxc5 Nxc3 12.Qxd8+ Kxd8 13.bxc3 Bxc3 [13...Kc7!? 14.Nd4 Rd8 15.Be3 Bf5] 14.Rb1 Kc7 [14...f6!?] 15.Rb3 Bf6 16.Bd2

I would like to ask both players if they knew what a theoretical rabbit-hole they went into with this line! There are over 60 games here! 16...a5 [16...Be6 has been most often played: 17.Ba5+ (17.Rb6!? a5) 17...Kc6 But this might well not be the best! (17...Kb8!! is Stockfish's adamant (and unplayed!) preference, with a slight plus! 18.Rd1!! b5!!) 18.Rb6+ Kxc5 19.Nd2 Bxa2! according to Stockfish the only 0.00 move (19...Bd5; 19...Bd4+ 20.Kh1 Bxa2 21.c3!N +-) ; 16...Bf5 17.Ba5+ Kc8 18.Rb6 Rd8 19.c6 bxc6 20.Rxc6+ Kd7 21.Rxf6 exf6 22.Rd1+ Ke8 23.Bxd8 Rxd8 24.Rxd8+ Kxd8 25.Nd4 saw White grind to the edge of a win and then miss; ½-½ (78) Keller,C (2200)-Leon Hoyos,M (2521) Metz 2010] 17.a4? Lets Black out. [17.Rfb1 Ra7 18.Rb5 (18.c6! (Stockfish 10) 18...Kxc6! 19.Be3 Ra6 remains tense but Black is no worse) 18...Bd7! 19.Rb6 (19.Bxa5+ Kc8 20.c6 (20.Bb6?! Rxa2 21.Ra5 Rxa5 22.Bxa5 Bf5 (22...Bc6=/+) 23.Ne5 Bxc2 24.Rc1 Be4 25.Rd1 Bxe5 26.fxe5 Bf5 27.Bb6 h5 28.Kf2 Be4 29.g3 e6 30.Rd6 Bc6 31.h4 Rf8 32.Ke3 Bd7 33.Rd1 Bc6 34.Rd6 f6 35.Rxe6 fxe5 36.Rxg6 Kd7 37.Rg5 Rf3+ 38.Ke2 e4 39.Rxh5 Bb5+ 40.Kd1 e3 41.Re5 e2+ 42.Kd2 Rd3+ 43.Kc2 Rxg3 44.Ba5 Kc6 45.Bd2 Bd3+ 46.Kc3 Kb5 47.Be1 Rh3 48.Kd4 Bg6 49.c6+ Kxc6 50.Re6+ Kd7 51.Rxg6 Rh1 52.Rg7+ Kc6 53.Rg6+ Kd7 54.Rg7+ Kc6 55.Rg6+ Kd7 1/2-1/2 (55) Lazar,A (2129)-Danner,G (2401) Pula 2012) 20...Bxc6 21.Rc5 e6 22.Bc3 Bxc3 23.Rxc3=/+) ] 17...Be6-/+ 18.Rb6 Rhd8 19.Rfb1 Bd5 20.f5 slightly suicidal [20.Be3 Rd7 (20...Bc6) ] 20...gxf5 21.Bf4+ Kc8 [21...Kd7] 22.Ne5 Bxe5 23.Bxe5 Bc6

Quite an amazing situation, that Black is as won as he is here. 24.Bc3 [24.Rf1] 24...Rd5 25.Re1 Kd7 [25...Rxc5!] 26.Re5 Rxe5 27.Bxe5 Ke6 28.Bf4 Rd8 29.Rb3 Rd4 30.Bc7 Rxa4 31.Rh3 Ra1+ 32.Kf2 a4 33.Rh6+ f6 34.Rxh7 a3 35.Rh8 a2 36.Ra8 Bd5 37.h4 Rc1 38.h5 a1Q 0-1

(15) Kuczek,Kevin W (2003) - Ricard,Bruce (1892) [B19]
Mechanics' Spring TNM: 2000+ San Francisco (2.16), 26.03.2019

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.h4 h6 7.h5 Bh7 8.Nf3 Nd7 9.Bd3 Bxd3 10.Qxd3 e6 11.Bf4 [11.Bd2 is Negy's preference in his first Grandmaster Repertoire book, and I've stumbled to a few wins with it] 11...Qa5+ 12.Bd2 Bb4 13.a3 Bxd2+ 14.Nxd2 Ngf6 15.0-0-0 c5 16.Nc4 Qc7 17.dxc5 0-0 18.b4 Nd5 19.Ne3 Ne5 20.Qb3 Nxe3 21.Qxe3 Nc4 22.Qd4 b5 23.Rd3 a5 24.Ne2 axb4 25.axb4 Ra2 26.Nc3 Ra1+ 27.Nb1 Rfa8 28.Rhd1 Qa7 29.Rb3 Qa2 30.Rdd3 Na3 31.Qxa1 Qxc2# 0-1

(16) Rudyak,Felix (1865) - Pryor,Jamieson (2001) [E16]
Mechanics' Spring TNM: 2000+ San Francisco (2.17), 26.03.2019

1.d4 Nf6 2.c4 e6 3.g3 Bb4+ 4.Bd2 Be7 5.Nf3 b6 6.Bg2 Bb7 7.0-0 0-0 8.Nc3 d6 9.Qc2 Nbd7 10.e4 c5 11.d5 e5 12.Nh4 Ne8 13.Nf5 Bf6 14.g4 Bc8 15.Qd3 g6 16.Ng3 Bg7 17.a4 a5 18.f3 Nb8 19.h4 Qxh4 20.Kf2 f5 21.Rh1 fxe4 22.Ncxe4 Qe7 23.Ng5 h6 24.Ne6 Bxe6 25.dxe6 Qxe6 26.Bxh6 Bxh6 27.Rxh6 Kg7 28.Rah1 Rf4 29.Nh5+ Kf7 30.Nxf4 exf4 31.g5 Qf5 32.Qxf5+ gxf5 33.Bh3 Nc6 34.Bxf5 Nd4 35.Be4 Rd8 36.R1h4 Ne6 37.Bd5 1-0

(17) Perlov,Alexander (1720) - Gray,William (1962) [E62]
Mechanics' Spring TNM: 1600-1999 San Francisco (2.18), 26.03.2019

1.d4 Nf6 2.c4 d6 3.Nc3 g6 4.g3 Bg7 5.Bg2 0-0 6.Nf3 Bf5 7.Ng5 Bc8 8.0-0 Nc6 9.e4 e5 10.d5 Nd4 11.h3 Nh5 12.Kh2 f5 13.exf5 Bxf5 14.Nge4 Qd7 15.Be3 Rae8 16.Rc1 a6 17.b4 h6 18.c5 Bxe4 19.Nxe4 Nf6 20.c6 bxc6 21.dxc6 Qe6 22.Nxf6+ Qxf6 23.Qd3 Ra8 24.a4 Rfb8 25.Rc4 Kh7 26.Be4 Qe6 27.Rxd4 exd4 28.Bxd4 Rxb4 29.Bxg7 Qxe4 30.Qc3 Qc4 31.Qa1 Rxa4 32.Qe1 Kxg7 33.Qe7+ Qf7 0-1

(18) Clemens,Kristian (1946) - Babayan,Gagik (1806) [E91]
Mechanics' Spring TNM: 1600-1999 San Francisco (2.19), 26.03.2019

1.Nf3 Nf6 2.c4 g6 3.Nc3 Bg7 4.d4 0-0 5.e4 d6 6.Be2 Nbd7 7.0-0 c5 8.d5 a6 9.Bf4 Nh5 10.Bd2 Nhf6 11.a3 h6 12.Rb1 e6 13.dxe6 fxe6 14.e5 Nxe5 15.Nxe5 dxe5 16.Qc2 g5 17.Rfd1 Qc7 18.Be3 Bd7 19.Ne4 Nxe4 20.Qxe4 Bc6 21.Qg4 Qe7 22.h4 gxh4 23.Bxh6 Qf6 24.Bxg7 Qxg7 25.Qxe6+ Kh8 26.Qh3 Rf4 27.Rd3 Qf6 28.Rf1 Rf8 29.f3 Rg8 30.Rc3 Rg3 31.Qc8+ Rg8 32.Qh3 Rd4 33.Rd1 Rgd8 34.Rcd3 Qf4 35.Rxd4 cxd4 36.Qe6 e4 37.Qg6 Rd6 38.Qh5+ Kg7 39.fxe4 Rg6 40.Qf3 Qxe4 41.Qxe4 Bxe4 42.Rxd4 Rxg2+ 43.Kf1 Bc6 44.Rxh4 Rg3 45.Rg4+ Rxg4 46.Bxg4 Kf6 47.Kf2 Ke5 1/2-1/2

(19) Cohee,James (1606) - Maser,Thomas (1901) [C66]
Mechanics' Spring TNM: 1600-1999 San Francisco (2.20), 26.03.2019

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.0-0 Bd7 6.c3 Nf6 7.Re1 g6 8.d3 Bg7 9.Bg5 0-0 10.Nbd2 Qe8 11.Nf1 Nh5 12.Ne3 h6 13.Bh4 Nf4 14.Bg3 Rc8 15.Nd5 Nxd5 16.exd5 Ne7 17.Bxd7 Qxd7 18.Qb3 f5 19.h3 g5 20.Bxe5 g4 21.Bxg7 Kxg7 22.Nd4 Kh7 23.hxg4 fxg4 24.g3 Ng6 25.Re3 Qf7 26.Qc2 Qxd5 27.Ne6 Rf6 28.Rae1 Kh8 29.d4 c5 30.Nf4 Nxf4 31.gxf4 Rcf8 32.Re7 R8f7 33.Rxf7 Qxf7 34.dxc5 dxc5 35.Qe4 Rxf4 36.Qe5+ Kh7 37.Qxc5 Kg6 38.Re7 Qf8 39.Qe3 Rxf2 40.Rxb7 Rf1+ 41.Kg2 Rf6 42.Qe4+ Kg5 43.Qe3+ Kh5 44.Qe5+ Rf5 45.Qh2+ Kg5 46.Qg3 Qc5 47.Rg7+ Kf6 48.Rxg4 Qd5+ 49.Kh3?? [49.Kh2; 49.Kg1] 49...Qh1+ 50.Qh2 Rh5+ 0-1

(20) Krasnov,Steven Le (1876) - Robeal,Rafik (1716) [A10]
Mechanics' Spring TNM: 1600-1999 San Francisco (2.21), 26.03.2019

1.Nf3 b6 2.c4 Bb7 3.Nc3 e6 4.e4 Ne7 5.d4 Ng6 6.h4 h5 7.Bd3 Nc6 8.a3 e5 9.d5 Nb8 10.Bg5 Be7 11.Qd2 d6 12.Bc2 Nd7 13.Ba4 0-0 14.Bxe7 Qxe7 15.Ng5 Nc5 16.Bd1 a5 17.Rb1 a4 18.Bxh5 Nf4 19.Bf3 Nb3 20.Qe3 Nd4 21.Rc1 f5 22.g3 Ng6 23.Ne2 Nb3 24.Rc3 f4 25.Qd3 Bc8 26.Bh5 Rf6 27.Bxg6 Rxg6 28.gxf4 exf4 29.Nxf4 Rf6 30.Nfe6 Nc5 31.Nxc5 bxc5 32.0-0 Rf4 33.Ne6 Rg4+ 34.Kh2 Rxh4+ 35.Kg2 Bxe6 36.dxe6 Qg5+ 37.Kf3 Rh3+ 0-1

(21) Busch,Jonah M (1826) - Kim,Andy (1619) [B12]
Mechanics' Spring TNM: 1600-1999 San Francisco (2.22), 26.03.2019

1.e4 c6 2.d4 d5 3.e5 Bf5 4.Nc3 e6 5.g4 Bg6 6.Nge2 c5 7.h4 h5 8.Nf4 Bh7 9.Nxh5 cxd4 10.Nb5 Nc6 11.Nxd4 Qb6 12.Nxc6 Qxc6 13.Bd3 Bxd3 14.Qxd3 g6 15.Ng3 Rc8 16.c3 Nh6 17.Bxh6 Bxh6 18.g5 Bf8 19.0-0-0 Qa4 20.Kb1 Rc6 21.b3 Rb6 22.Qd4 Qa3 23.Ne4 Be7 24.Nf6+ Kd8 25.c4 Bc5 26.Qb2 Qxb2+ 27.Kxb2 Kc8 28.cxd5 exd5 29.Nxd5 Re6 30.Rc1 Rc6 31.Rc4 Rd8 32.b4 Rxd5 33.bxc5 Rxe5 34.Rf4 Rc7 35.Rc1 Kd8 36.Kb3 Ke8 37.Kb4 b6 38.Rfc4 bxc5+ 39.Rxc5 Rcxc5 40.Rxc5 Re2 41.a4 Rxf2 42.Rc4 Rb2+ 43.Ka5 Rb7 44.Ka6 Rd7 45.Rb4 Rc7 46.Rb8+ Kd7 47.Rb7 Kc6 48.Rxc7+ Kxc7 49.Kxa7 Kc6 50.Kb8 Kb6 51.Kc8 1-0

(22) Curto,Barry Wayne (1900) - Mays,Jerry L (1700) [A38]
Mechanics' Spring TNM: 1600-1999 San Francisco (2.23), 26.03.2019

1.c4 Nf6 2.Nc3 g6 3.Nf3 Bg7 4.g3 0-0 5.Bg2 c5 6.0-0 Nc6 7.a3 d6 8.Rb1 Bf5 9.d3 e5 10.Nh4 Be6 11.f4 exf4 12.Bxf4 Ng4 13.Nf3 Nd4 14.Ng5 Nf5 15.e4 Bd4+ 16.Kh1 Nfe3 17.Qe2 Nxf1 18.Nxe6 Nf2+ 19.Qxf2 fxe6 20.Qe2 Nxh2 21.Kxh2 Rxf4 22.gxf4 Qh4+ 23.Bh3 Qxf4+ 24.Kh1 Rf8 25.Rf1 Bf2 26.Nd1 Qg3 27.Nxf2 Rxf2 28.Rxf2 1-0

(23) Babb,Kevin (1641) - Drury,Mark L (1878) [D09]
Mechanics' Spring TNM: 1600-1999 San Francisco (2.24), 26.03.2019

1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 Nc6 5.g3 Bg4 6.Bg2 Qd7 7.0-0 0-0-0 8.Na3 Nge7 9.Nc2 Ng6 10.b3 h5 11.Bg5 Be7 12.Bxe7 Ngxe7 13.h4 Bxf3 14.Bxf3 Nxe5 15.Bg2 f6 16.Qd2 g5 17.hxg5 fxg5 18.Qxg5 Qe6 19.Qf4 c5 20.Qe4 N7c6 21.f4 h4 22.fxe5 hxg3 23.Qf5 Rde8 24.Bxc6 bxc6 25.Ne1 Rh2 26.Qxe6+ Rxe6 27.Rf6 Rxe5 28.Nf3 Rexe2 29.Nxh2 gxh2+ 30.Kh1 d3

31.Rff1??= [31.Rxc6+[]+- Kd7 32.Rxc5 Ke6 (32...d2 33.Rf5) 33.Rc6+ Ke7 34.Rg6 d2 35.Rg2 Re1+ 36.Kxh2 Rxa1 37.Rxd2; 31.Rff1 d2 is a DRAW -- there is no way to make progress.] 1-0

(24) Xu,Jayden (1669) - McKellar,Daniel (1872) [D44]
Mechanics' Spring TNM: 1600-1999 San Francisco (2.25), 26.03.2019

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 e6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5 9.Nxg5 hxg5 10.Bxg5 Nbd7 11.exf6 [11.g3] 11...Bb7 12.g3 c5 13.d5 b4?

[13...Qb6; 13...Nxf6; 13...Bh6] 14.Bxc4! I'll guess that 13...b4 surprised him, but Xu rose to the occasion and found the refutation. 14...Qa5 [14...bxc3 15.dxe6 Qc7 (15...Ne5 16.exf7+ 1-0 (16) Dobrev,N (2408)-Janev,P (1970) Sunny Beach 2008 16...Nxf7 17.Bb5+ 1-0 (17) Guthrie,D (2140)-Johnson,Q Blenheim 1999; 15...fxe6 16.f7+ Kxf7 17.Bxd8 Rxd8 18.Qe2 Re8 19.0-0-0 Nb6 20.Rhe1 cxb2+ 21.Kb1 Nxc4 22.Rd7+ Kf6 23.Qxc4 Bc6 24.Qf4+ 1-0 (24) Kopjonkin,G (2325)-Szabo,S (2130) Budapest 1993) 16.Bf4 Qc6 17.Qxd7+ Qxd7 18.exd7+ Kd8 19.0-0 cxb2 20.Rab1 Bh6 21.Rxb2 Bxf4 22.Rxb7 Be5 23.Re1 Bxf6 24.Bd5 a5 25.Rb6 1-0 (25) Paravyan,D (2093)-Kuzmin,E (2067) Batumi 2010; 14...Qb6 15.dxe6 0-0-0 16.exd7+ Rxd7 17.Qxd7+ Kxd7 18.0-0-0+ Kc8 19.Nd5 Qa5 20.Rhe1 Bd6 21.Ne7+ Kc7 22.Rxd6 Kxd6 23.Bf4+ Kd7 24.Bxf7 1-0 (24) Riess,A (2141)-Bendfeldt,T (2028) Hanerau 2015; 14...Qc7 15.dxe6 Qe5+ 16.Ne2 (16.Kf1 0-0-0 17.exd7+ Rxd7 18.Qg4 bxc3 19.Bb5 Qd4 20.Qxd7+ Qxd7 21.Bxd7+ Kxd7 22.Rg1 cxb2 23.Rb1 Rxh2 24.Rxb2 Ba6+ 25.Ke1 c4 26.Be3 Ba3 27.Rb8 Rh5 28.Kd2 Bd6 29.Ra8 Ra5 30.Rxa7+ Ke6 31.Bd4 Bb4+ 32.Ke3 Rxa2 33.Rb1 Bd2+ 34.Ke4 1-0 (34) Wells,P (2400)-Durao,J (2220) London 1986) 16...0-0-0 17.e7 Qe4 18.f3 Qxc4 19.Rc1 Qd5 20.Qxd5 Bxd5 21.exd8Q+ Kxd8 22.Kf2 Kc7 23.h4 Bd6 24.Rhd1 Bc6 25.Bf4 Bxf4 26.Nxf4 Rh6 27.Nd5+ Kb7 28.Ne7 Rxf6 29.Nxc6 Kxc6 30.Re1 a5 31.h5 a4 32.Re4 Kb5 33.g4 Rd6 34.g5 Rd5 35.f4 Nb6 36.h6 Rd8 37.f5 c4 38.h7 1-0 (38) Hoegerl,G (2215)-Busch,L (2119) Hassloch 2009; 14...e5 15.Ne4 Qa5 16.0-0 0-0-0 17.a3 Nb6 18.Bb3 c4 19.axb4 Qxb4 20.Bxc4 Nxc4 21.Ra4 Qb5 22.Nc3 Qc5 23.Qg4+ Kb8 24.Rxc4 1-0 (24) Ratsma,M (2031)-Gieben,S (2048) Groningen 2012] 15.dxe6 0-0-0 16.exd7+ Rxd7 17.Nd5 Qd8 18.0-0 Bxd5 19.Bxd5 Rxd5 20.Qg4+ Kc7 21.Rad1 Rd4 22.Rxd4 Qxd4 23.Qxd4 cxd4 24.h4 Bc5 25.Kg2 Kd6 26.Rh1 Ke5 27.h5 Kf5 28.f4 Ke4 29.h6 d3 30.Re1+ Be3 31.f5 d2 32.Rxe3+ Kd4 33.Re7 Rc8 34.Bxd2 Rc2 35.Rd7+ Ke4 36.Rd8 1-0

(25) Drane,Robert Will (1800) - Rakonitz,David (1674) [C18]
Mechanics' Spring TNM: 1600-1999 San Francisco (2.26), 26.03.2019

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Bxc3+ 6.bxc3 Qa5 7.Bd2 Qa4 8.Qg4 Kf8 9.Qd1 Nc6 10.Nf3 Nge7 11.Qb1 c4 12.Be2 Rb8 13.h4 h6 14.h5 Bd7 15.g4 f6 16.exf6 gxf6 17.Qc1 Kg7 18.Nh4 Rbg8 19.f4 Kf7 20.g5 f5 21.Be3 Nc8 22.Ng6 Rh7 23.Ne5+ Nxe5 24.dxe5 Ke8 25.g6 Rhg7 26.Bf2 Bc6 27.Bh4 Nb6 28.Rg1 Rd7 29.Rb1 Qa5 30.Rb4 Na4 31.Qa1 Qc5 32.Rg3 Nb6 33.Rb1 Na4 34.Rd1 Qa5 35.Rd4 Qb6 36.Bf6 Qb2 37.Qxb2 Nxb2 38.g7 Na4 39.Kd2 Nc5 40.Bf3 Rf7 41.Rg6 Kd7 42.Rxh6 Rfxg7 43.Bxg7 Rxg7 44.Rg6 Rxg6 45.hxg6 Ke7 46.Kc1 Kf8 47.Rd1 Kg7 48.Bh5 Ne4 1/2-1/2

(26) Bradley,Christopher (1604) - Lesquillier,Walter (1752) [A05]
Mechanics' Spring TNM: 1600-1999 San Francisco (2.27), 26.03.2019

1.Nf3 Nf6 2.c4 g6 3.b4 Bg7 4.Bb2 0-0 5.g3 d6 6.Bg2 Nbd7 7.0-0 c6 8.Nc3 Ne4 9.Qc2 Nxc3 10.Bxc3 Ne5 11.Nxe5 dxe5 12.Qb2 Qc7 13.f4 f6 14.fxe5 fxe5 15.Rxf8+ Kxf8 16.Rf1+ Kg8 17.d4 exd4 18.Bxd4 e5 19.Bc3 Be6 20.c5 Rd8 21.a3 a6 22.Qa1 Rd7 23.Rd1 Rxd1+ 24.Qxd1 Qd7 25.Qa1 Qc7 26.Qb2 Kf7 27.e4 Kg8 28.h3 Kf7 29.Qa1 Kg8 30.Qb2 h6 31.a4 Kf8 32.Kh2 Kg8 33.b5 cxb5 34.axb5 Qxc5 35.bxa6 bxa6 36.Qb8+ Qc8 37.Qd6 Qxc3 38.Qxe6+ Kh7 39.Qxa6 Qe3 40.Qb7 Qf2 41.Qd7 h5 42.h4 Kh6 43.g4 Qxh4+ 44.Bh3 Qf2+ 45.Bg2 h4 46.g5+ Kh7 47.Qg4 Qg3+ 48.Qxg3 hxg3+ 49.Kxg3 Bf8 50.Kg4 Be7 51.Bf1 1/2-1/2

(27) Ochoa,Jason B (1738) - Boldi,Nicholas Ar (1571) [A28]
Mechanics' Spring TNM: 1600-1999 San Francisco (2.28), 26.03.2019

1.Nf3 Nc6 2.c4 e5 3.Nc3 Nf6 4.d3 Bb4 5.Bg5 d6 6.e4 Bg4 7.Be2 0-0 8.0-0 Bxc3 9.bxc3 Qe7 10.Rb1 Rab8 11.h3 Bh5 12.g4 Bg6 13.Nh2 Nd8 14.Rb2 Ne6 15.Be3 c5 16.g5 Nxe4 17.dxe4 Nxg5 18.Bxg5 Qxg5+ 19.Kh1 Bxe4+ 20.Bf3 Bf5 21.Rg1 Qf6 22.Ng4 Qh4 23.Rg3 Bxg4 24.Bxg4 f5 25.Bxf5 Rxf5 26.Qd5+ Rf7 27.Qxd6 Rd8 28.Qxe5 Qxc4 29.Re2 h6 30.Kh2 b6 31.f3 Qd5 32.Qe3 Qd6 33.Reg2 Rdf8 34.f4 Rxf4 35.Rxg7+ Kh8 36.Qg3 Qe6 37.Rh7+ Kxh7 38.Qg7# 1-0

(28) Cortinas,Martin A (1686) - Casares Jr,Nick (1600) [C47]
Mechanics' Spring TNM: 1600-1999 San Francisco (2.31), 26.03.2019

1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.d4 exd4 5.Nxd4 Bc5 6.Be3 Nxd4 7.Bxd4 Bxd4 8.Qxd4 0-0 9.0-0-0 d6 10.Bc4 Be6 11.f3 Bxc4 12.Qxc4 a6 13.e5 b5 14.Qb3 Ne8 15.Ne4 Qe7 16.exd6 Nxd6 17.Nxd6 cxd6 18.Qd5 Rfd8 19.Rhe1 Qf6 20.Re4 Qh6+ 21.Kb1 Qxh2 22.Rde1 Kf8 23.f4 Qh6 24.g4 Re8 25.g5 Qg6 26.f5 Qxg5 27.Qxd6+ Re7 28.Qxe7+ Qxe7 29.Rxe7 1-0

(29) Tamondong,Cesar B (1600) - Lamstein,Joshua D (1655) [E70]
Mechanics' Spring TNM: 1600-1999 San Francisco (2.32), 26.03.2019

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Bd3 0-0 6.Nge2 e5 7.d5 a5 8.0-0 Na6 9.f3 Nc5 10.Bc2 Nh5 11.Be3 b6 12.Qd2 f5 13.Bg5 Bf6 14.Bh6 Bg7 15.Bxg7 Kxg7 16.f4 Qf6 17.Rae1 Kh8 18.fxe5 dxe5 19.exf5 gxf5 20.Nb5 Rg8 21.Nxc7 Qg7 22.Rf2 Qxc7 23.d6 Qg7 24.Nc3 Nf4 25.Rxf4 exf4 26.Re7 Qg4 27.Qd4+ Qg7 28.Rxg7 Rxg7 29.Nd5 Bb7 30.Bxf5 f3 31.g3 Rf8 32.g4 Rxf5 33.Kf2 Rf8 34.h4 Bxd5 35.cxd5 Rd8 36.g5 Rxd6 37.Kxf3 Kg8 38.Kg4 h6 39.Qe5 Rdg6 40.Qe8+ Kh7 41.Qe2 hxg5 42.h5 Rf6 43.Qc2+ Kg8 0-1

(30) Otterbach,Renate (1225) - Chan,John (1591) [C00]
Mechanics' Spring TNM: Under 1600 San Francisco (2.33), 26.03.2019

1.e4 e6 2.Nf3 h6 3.d4 c6 4.Bd3 Be7 5.0-0 d6 6.c4 Nd7 7.Nc3 a6 8.a4 c5 9.Be3 cxd4 10.Nxd4 Ne5 11.Be2 Qc7 12.b3 Nf6 13.f3 Ng6 14.f4 Qa5 15.Bd2 Qc5 16.Be3 Qc7 17.Kh1 h5 18.f5 exf5 19.exf5 Ne5 20.Qd2 b6 21.Nd5 Nxd5 22.cxd5 Bb7 23.Nf3 Ng4 24.Rac1 Qd8 25.Bc4 0-0 26.Bg5 Bf6 27.Bf4 Qd7 28.Qd3 Rfe8 29.Bg5 Qd8 30.Qd2 Rc8 31.h3? [31.Bf4= Qd7 32.Qd3 Ne5 33.Nxe5 dxe5 34.Be3 e4 35.Qe2 Bxd5 36.Bxa6 Rxc1 37.Rxc1 Qxf5 38.Qb5 Rb8 39.Rd1 Be6 40.Qxf5 Bxf5 41.Bc4 Kf8=/+] 31...Bxg5-/+ 32.Nxg5 Ne3 33.Rce1? [33.f6!? gxf6 (33...Nxf1 34.Rxf1 gxf6 35.Qf4 Re5 36.Ne4 f5 37.Ng3~/=) 34.Rfe1 fxg5 35.Rxe3 Rxe3 36.Qxe3 b5] 33...Qxg5 34.Rf3 Qxg2+! (cleanest) 35.Qxg2 Nxg2 36.Rxe8+ Rxe8 37.Kxg2 Kh7 38.Kg3 Kh6 39.h4 Re5 40.f6 g6 41.Rd3 g5 [41...Re4 42.Rc3 Rg4+ 43.Kh3 Bc8] 42.hxg5+ Kxg5 43.Rf3 b5 [43...h4+ 44.Kh2 a5] 44.axb5 axb5 45.Rf2 [45.Bxb5-+] 45...bxc4 46.bxc4 Re4 47.Rc2 Kxf6 48.Kf3 Rg4 49.Kf2 Kf5 50.Rc3 Kg5 51.Ke2 h4 52.Rc1 h3 53.Rh1 Kh4 54.Kf3 Rxc4 55.Rg1 Bxd5+ 56.Kf2 h2 57.Rg7 Kh3 58.Rg3+ Kh4 59.Rg7 Rc2+ 60.Ke3 h1Q 61.Rh7+ Kg5 62.Rg7+ Kf6 63.Rg4 Qe1+ 64.Kf4 Qf2# 0-1

(31) Frank,Robert H (1426) - Robertson,Wade (982) [C02]
Mechanics' Spring TNM: Under 1600 San Francisco (2.36), 26.03.2019

1.d4 e6 2.e4 d5 3.e5 c5 4.c3 Nc6 5.Nf3 Qb6 6.Be3?? [6.Be2; 6.Bd3; 6.a3] 6...Qxb2 7.Nbd2 Qxc3 8.Rc1 Qa5 9.a4 [9.dxc5 Nge7] 9...cxd4 [9...c4!] 10.Bxd4 Nxd4 11.Nxd4 Bd7 [11...Bb4 12.Rc2-+ 1-0 (36) Kaiser,J (1108)-Behm,L (917) Greifswald 2001 (12.Bb5+! Kf8-/+) ; 11...a6!-+] 12.Nb5 [12.Bb5] 12...Bxb5?? [12...Rb8; 12...Rc8; 12...Bc6] 13.Bxb5++/- Kd8 14.0-0 [14.Qf3!] 14...Ne7?

[14...a6 15.Nc4 Qc7 16.a5! axb5 17.Nb6 Rxa5 18.Rxc7 Kxc7 19.Qd4 Ne7 20.Nd7!!+/-] 15.Nc4! Qb4 16.Nd6 Nc6 17.Nxf7+ Ke7 18.Nxh8 Nxe5 19.Rc7+ Kd6 20.Qc2 Rb8 21.Nf7+ Nxf7 22.Rxf7 h6 23.Qc7# 1-0

(32) Khamkar,Susheel S (1033) - James,Charles (1419) [D13]
Mechanics' Spring TNM: Under 1600 San Francisco (2.37), 26.03.2019

1.d4 d5 2.c4 c6 3.cxd5 cxd5 4.Nc3 Nf6 5.Bf4 e6 6.Nf3 Nc6 7.e3 Bb4 8.a3 Bxc3+ 9.bxc3 Ne4 10.Qb3 a6 11.Bd3 0-0 12.0-0 g5 13.Bg3 Nxg3 14.fxg3 f5 15.c4 Kh8 16.cxd5 exd5 17.Qc2 Be6 18.h4 h6 19.hxg5 hxg5 20.Kf2 Rc8 21.Rh1+ Kg7 22.Rh5 Nxd4 23.Qb2 Kg6 24.Rxg5+ Qxg5 25.Nxg5 Kxg5 26.Qxd4 1-0

(33) Chui,Kevin - Olson,David R (1400) [C41]
Mechanics' Spring TNM: Under 1600 San Francisco (2.38), 26.03.2019

1.e4 e5 2.Nf3 d6 3.Bc4 Be6 4.Bb3 Nf6 5.d3 Be7 6.0-0 0-0 7.h3 Nc6 8.c3 d5 9.Ng5 Qd7 10.Nd2 d4 11.f4 exf4 12.Rxf4 h6 13.Ngf3 Nh5 14.Bxe6 fxe6 15.Rxf8+ Rxf8 16.e5 dxc3 17.Nc4 b5 18.Na3 Bc5+ 19.Kh1 b4 20.Nc2 Qf7 21.d4 cxb2 22.Bxb2 Be7 23.Ne3 Qf4 24.Qb3 Nd8 25.d5 Kh8 26.Re1 Bc5 27.Bc1 Qg3 28.dxe6 Rxf3 29.Qd1 Rf8 30.Ng4 Nxe6 31.Rf1 Nhf4 32.Rf3 Qh4 33.Qf1 g5 34.Bd2 Rd8 35.Be1 Qh5 36.Nf6 Qf7 37.g3 Nh5 38.Ne4 Qg7 39.g4 Nhf4 40.Nxc5 Nxc5 41.Re3 Rd1 42.Qf3 Rd3 43.Bxb4 Rxe3 44.Qxe3 Nce6 45.Bc3 Qd7 46.Qf3 Qd5 47.Qxd5 Nxd5 48.Bd2 c5 49.h4 gxh4 50.Bxh6 c4 51.g5 a5 52.g6 a4 53.Kg2 a3 54.Kh3 Nc3 55.Bc1 Nb1 56.Kxh4 Kg7 57.Kh5 Nf4+?? 58.Bxf4 Nc3 59.Bc1 Nd5 60.Bh6+ Kg8 ... and White won (he is winning now) 1-0

(34) Ansari,Jahaan (1397) - Fernicola,Michael [A47]
Mechanics' Spring TNM: Under 1600 San Francisco (2.39), 26.03.2019

1.d4 Nf6 2.Nf3 e6 3.Bg5 b6 4.Nc3 Bb7 5.e4 Be7 6.Bxf6 Bxf6 7.e5 Be7 8.Qd3 d6 9.0-0-0 Nd7 10.Kb1 0-0 11.Be2 dxe5 12.dxe5 Nc5 13.Qe3 Qb8 14.h4 a5 15.Ng5 Rd8 16.Bd3 Nxd3 17.Rxd3 Rxd3 18.Qxd3 g6 19.Nce4 Qd8 20.Qf3 Bxg5 21.hxg5 Bxe4 22.Qxe4 Qf8 23.b3 Rd8 24.Kb2 Rd2 25.Qe3 Qd8 26.Kc1 Qd4 27.Qxd4 Rxd4 28.Rh3 Re4 29.Re3 Rxe3 30.fxe3 Kg7 31.Kd2 h6 32.Kd3 hxg5 33.Kc4 c6 34.a4 g4 35.b4 axb4 36.Kxb4 Kh6 37.a5 bxa5+ 38.Kxa5 Kg5 39.g3 Kf5 40.Kb6 Ke4 41.Kxc6 Kf3 42.c4 Kxg3 43.Kd7 Kf3 44.c5 g3 45.c6 g2 46.c7 g1Q 47.c8Q Qxe3 48.Qe8 Qxe5 49.Qxf7+ Qf5 50.Qh7 e5+ 51.Kd6 e4 52.Qh1+ Kf4 53.Qf1+ Kg5 54.Qg1+ Qg4 55.Qe3+ Qf4+ 56.Qxf4+ Kxf4 0-1

(35) Jijo,Wilson - Roberts,Joseph (1332) [C50]
Mechanics' Spring TNM: Under 1600 San Francisco (2.40), 26.03.2019

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.d3 h6 5.0-0 Nf6 6.Nc3 Be7 7.h3 Na5 8.Nxe5 Nxc4 9.Nxc4 0-0 10.Qf3 Ne8 11.Qg3 Bh4 12.Qf3 Bg5 13.Nd5 d6 14.b3 c6 15.Nde3 b5 16.Na3 Nc7 17.Bb2 Ne6 18.Nf5 Bf6 19.Bxf6 Qxf6 20.Qg3 d5 21.f3 b4 22.exd5 cxd5 23.Nb5 Qxf5 24.Nd6 Qf6 25.Rfe1 Nd4 26.Re8 (So much guessing up to here (please next time use a board with coordinates on it!), but now it just gets too impossible for me to decypher. ... 1-0 33. 1-0

(36) Soffer,Aaron (1260) - Reyes,Victor [C13]
Mechanics' Spring TNM: Under 1600 San Francisco (2.41), 26.03.2019

1.e4 e6 2.d4 d5 3.Nd2 dxe4 4.Nxe4 Nf6 5.Bg5 Be7 6.Nxf6+ Bxf6 7.Bxf6 Qxf6 8.Nf3 a6 9.Bd3 b5 10.Be4 c6 11.Qd3 Bb7 12.Rc1 Qf4 13.0-0 f5 14.Rfe1 fxe4 15.Rxe4 Qf6 16.Rce1 Bc8 17.d5 0-0 18.dxe6 Re8 19.Qb3 c5 20.Qd5 Ra7 21.e7+ Kh8 22.Qxc5 Nc6 23.Ng5 Raxe7 24.Rxe7 Rxe7 25.Rxe7 Nxe7 26.c3 h6 27.Nf3 Bb7 28.Qe5 Bxf3 29.Qxf6 gxf6 30.gxf3 Kg7 31.Kg2 f5 32.Kg3 Kg6 33.Kf4 Kf6 34.Ke3 Ke5 35.f4+ Kd5 36.Kd3 Ng6 37.b3 Nxf4+ 38.Kc2 Nh3 39.f3 f4 40.a3 Ng5 41.Kd3 Nxf3 42.c4+ bxc4+ 43.bxc4+ Ke5 44.a4 Nxh2 45.a5 f3 46.Ke3 Nf1+ 47.Kxf3 Nd2+ 48.Kg4 Nxc4 49.Kh5 Nxa5 50.Kxh6 Nc4 51.Kg7 a5 52.Kf7 a4 53.Ke7 a3 54.Kd7 a2 55.Ke8 a1Q 56.Kf8 Qa7 57.Ke8 Ke6 0-1

(37) Capdeville,Barry (1219) - Simpkins,Jerry (1508) [C40]
Mechanics' Spring TNM: Under 1600 San Francisco (2.42), 26.03.2019

1.e4 e5 2.Nf3 f5 3.Nc3?! [3.Bc4 is suspect but more fun; 3.Nxe5 is the main line; 3...Qe7 is Jerry's "pet line" a) 3...Qf6 being the main move 4.Nc4 (4.d4 d6 5.Nc4 fxe4 6.Nc3 Qg6) 4...fxe4 5.Nc3 (5.Ne3; 5.d3) ; b) 3...d6?? is an experiment he won't try again; c) 3...Nc6!? gets seen from time to time, including in the TNM; 4.d4 (4.Qh5+ g6 5.Nxg6 Qxe4+ 6.Be2 Nf6 7.Qh3) ] 3...d6 [3...fxe4 4.Nxe5] 4.Bc4 fxe4 5.Ng1 Not the refutation of the Latvian Gambit. 5...c6 6.d4 d5 7.Be2 exd4 8.Qxd4 Nf6 9.Be3 Bd6 10.Bg5 Nbd7 11.f4 0-0 12.0-0-0 Nc5 13.Kb1 Ne6 14.Qd2 Qc7 15.Bxf6 Bxf4 16.Qe1 Rxf6 17.Bg4 Nc5 18.Bxc8 Rxc8 19.Nge2 Be5 20.Nd4 Rcf8 21.Rd2 Nd3 22.cxd3 Bxd4 23.Ne2 e3 24.Rc2 Qe5 25.Nxd4 Qxd4 26.Qd1 Rf2 27.Re2 Rxe2 28.Qxe2 Rf2 29.Rd1 Qxb2+ 0-1

(38) Rushton,Peter (1186) - Yamamoto,Craig (1500) [B90]
Mechanics' Spring TNM: Under 1600 San Francisco (2.43), 26.03.2019

1.e4 c5 2.Nc3 Nc6 3.Nf3 d6 4.Bc4 Nf6 5.d4 cxd4 6.Nxd4 a6 [6...e6; 6...Qb6; 6...Bd7] 7.a3 Ne5 8.Bb3 Bd7 9.f4 Nc6 Two free moves? Can't be healthy. 10.Be3 e6 11.Qf3 Nxd4 12.Bxd4 Bc6 13.Qe2 Be7 14.0-0-0 0-0 15.Rhg1 Qc7 16.g4 Nd7 17.h4 Bf6 18.g5 Bxd4 19.Rxd4 Nc5 20.Ba2 Rad8 21.f5 e5 22.Rdd1 b5 23.f6 g6 24.h5 Ne6 25.Rh1 Nf4 26.Qf3 Rfe8 27.hxg6 hxg6 28.Rh2 Re6 29.Rdh1 1-0

(39) Harris,Clarence (1400) - Lintz,Michael Har [C65]
Mechanics' Spring TNM: Under 1600 San Francisco (2.45), 26.03.2019

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.0-0 Be7 5.Re1 d6 6.d4 0-0 7.dxe5 Nxe5 8.Nxe5 dxe5 9.Qxd8 Rxd8 10.Nc3 c6 11.Bd3 Nd7 12.Be3 Nc5 13.Be2 b6 14.Rad1 Be6 15.f4 exf4 16.Bxf4 Re8 17.Bf3 Rac8 18.e5 Bf5 19.Rd2 Ne6 20.Bg3 Bc5+ 21.Bf2 Bxf2+ 22.Kxf2 Red8 23.Rd6 Rxd6 24.exd6 Nc5 25.Bxc6 Bd7 26.Bxd7 Nxd7 27.Re7 Rd8 28.Nd5 Nf8 29.Rxa7 Rxd6 30.Ne7+ Kh8 31.Ra8 1-0

(40) Revi,Frank (1375) - Caburi,Alwin [D30]
Mechanics' Spring TNM: Under 1600 San Francisco (2.46), 26.03.2019

1.d4 d5 2.c4 e6 3.Nf3 Nf6 4.Bf4 Bd6 5.Bg5 Be7 6.Bf4 Bd6 7.Bxd6 Qxd6 8.Nc3 0-0 9.e3 b6 10.Be2 Bb7 11.Qc2 [There were six games with 11... err, 9.0-0... 11.0-0] 11...Re8 12.0-0 Nbd7 13.cxd5 exd5 14.Rac1 c6 15.Bd3 h6 16.Rfe1 c5 17.Nb5 Qc6 18.a4 a6 19.Nc3 Ne4 20.Qe2 Nxc3 21.Rxc3 Qxa4 22.dxc5 bxc5 23.Bc2 Qc6 24.Qd2 Ne5 25.Nxe5 Rxe5 26.f4 Rxe3?? [26...Re6-+] 27.Rcxe3 g6 28.Qf2 c4 29.Qh4 d4 30.Rg3 Kg7 31.f5 d3 32.fxg6 fxg6 33.Qd4+ Kf7 34.Rf1+ Kg8 35.Bd1 Rf8 36.Rxf8+ Kxf8 37.Qd8+ Kf7 38.Rf3+ Ke6 39.Rf6+ 1-0

(41) Latourette,Nicholas (1347) - Barreyro,Romeo [B00]
Mechanics' Spring TNM: Under 1600 San Francisco (2.47), 26.03.2019

1.e4 b6 2.d4 Bb7 3.Nc3 e6 4.Be3 Nf6 Right away: 5.e4. I can't figure this one out (looking down the moves): so no entry. 0-1 47 or so. 0-1

(42) Sachs-Weintraub,Julian (1416) - Gulbis,Andrejs Ju [C50]
Mechanics' Spring TNM: Under 1600 San Francisco (2.49), 26.03.2019

1.e4 e5 2.Nc3 Nf6 3.Nf3 Nc6 4.Bc4 Bc5 5.0-0 0-0 6.d3 d6 7.Bg5 Bg4 8.Nd5 h6 9.Nxf6+ gxf6 10.Bxh6 Bxf3 11.Qxf3 Qe8 12.Qg4+ Kh8 13.Qg7# 1-0

(43) Isreal,Andrew - Bayaraa,Timothy (1175) [D02]
Mechanics' Spring TNM: Under 1600 San Francisco (2.50), 26.03.2019

1.d4 d5 2.Nf3 Nc6 3.Bf4 Bg4 4.Nbd2 Nf6 5.e3 Ne4 6.Be2 Qd7 7.Nxe4 dxe4 8.Ne5 Nxe5 9.Bxe5 Bxe2 10.Qxe2 f6 11.Bg3 e6 12.0-0 Bd6 13.c4 Bxg3 14.fxg3 h5 15.Rf4 f5 16.Rd1 g5 17.Rf2 0-0-0 18.d5 Qh7 19.dxe6 Rdf8 20.Rd7 Qh6 21.e7 Kxd7 22.exf8Q Rxf8 23.Qd1+ Kc8 24.Qa4 Qf6 25.Qxa7 h4 26.Rd2 c5 27.Qa8+ Kc7 28.Qa5+ b6 29.Qa7+ Kc6 30.Rd7 Qd8 31.Qb7# 1-0

(44) Tabatabai,Ashkon (1138) - Mayer,Carson [B50]
Mechanics' Spring TNM: Under 1600 San Francisco (2.51), 26.03.2019

1.e4 c5 2.Nf3 d6 3.Bc4 Nf6 4.d3 Bg4 5.Bg5 e6 6.h3 Bh5 7.g4 Bg6 8.Qe2 a6 9.e5 dxe5 10.Nc3 b5 11.Bb3 Be7 12.h4 c4 13.dxc4 e4 14.Ne5 h5 Here White played 15.0-0-0, an illegal move (the white king moves through check). He went on to win after 15...0-0 16.Rxd8 (1-0 38). 1-0

(45) Cowgill,Jackie (1031) - White,Andrew Robb [C62]
Mechanics' Spring TNM: Under 1600 San Francisco (2.52), 26.03.2019

1.e4 Nc6 2.Nf3 e5 3.Bb5 d6 4.d4 Qe7 5.0-0 Bd7 6.d5 Nb8 7.Bxd7+ Nxd7 8.Re1 g6 9.Be3 f5 10.Bg5 Ngf6 11.exf5 gxf5 12.c4 Qg7 13.Bxf6 Qxf6 14.Nc3 0-0-0 15.h3 e4 16.Nh2 Nc5 17.f3 Nd3 18.Rf1 Nxb2 19.Qc2 Nxc4 20.Qa4 Qxc3 21.Qxa7 b6 22.Qa8+ Kd7 23.Qc6+ Ke7 24.Rac1 Qd4+ 25.Kh1 Ne3 26.Qxc7+ Rd7 27.Qc8 Nxf1 28.Nxf1 Bg7 29.Qa6 Qb2 30.Rd1 Rc7 31.fxe4 Rc1 32.Qb7+ Kf6 33.Ng3 Rxd1+ 34.Kh2 Kg5 35.Qxg7+ Qxg7 0-1

(46) Soffer,Josiah (799) - Service,Bruce [C55]
Mechanics' Spring TNM: Under 1600 San Francisco (2.53), 26.03.2019

1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6 4.Nc3 a6 5.Ng5 Qe7 6.Bxf7+ Kd8 7.Bb3 h6 8.Nf7+ Ke8 9.Nxh8 d6 10.Ng6 Qd7 11.0-0 Nd4 12.Bc4 b5 13.Bd5 c6 14.Bb3 a5 15.Nh8 d5 16.exd5 cxd5 17.Bxd5 Nxd5 18.Re1 Qe6 19.d3 b4 20.Nxd5 Qxd5 21.f4 Bd6 22.fxe5 Bc5 23.Be3 Bb7 24.Qd2 Rc8 25.Ng6 Bb6 26.Nf4 Qxe5 27.Bxd4 Bxd4+ 28.Kf1 Be4 29.Rxe4 Qxe4 30.dxe4 Bxb2 31.Rb1 Bc3 32.Qd5 a4 33.Qe6+ Kd8 34.Qg8+ Kd7 35.Rd1+ Kc7 36.Ne6+ Kb7 37.Qf7+ Kb8 38.Rd8 Rxd8 39.Qc7+ Ka8 40.Qxd8+ Kb7 41.Qd7+ Kb6 42.Qc7+ Kb5 43.Qb7+ Kc4 44.Qd5# 1-0

(47) Wagner,Tyler - Ahrens,Richard [C41]
Mechanics' Spring TNM: Under 1600 San Francisco (2.54), 26.03.2019

1.e4 e5 2.Nf3 d6 3.d4 exd4 4.Nxd4 Nf6 5.Nc3 Be7 6.Bd3 0-0 7.Be3 c5 8.Nde2 b6 9.0-0 Bb7 10.Ng3 d5 11.exd5 Nxd5 12.Nxd5 Bxd5 13.c4 Bc6 14.Qc2 g6 15.Rad1 Bd7?? [15...Qc7] 16.Be4 Nc6 17.Bxc6 Bf5? 18.Nxf5 Qc7 19.Bxa8 Rxa8 20.Nxe7+ Qxe7 21.Rfe1 Qf6 22.Rd2 Re8 23.Qa4 Re7 24.h3 g5 25.Rd8+ Kg7 26.Rd7 Re5 27.b4 Qf5 28.Bc1?? Rxe1+ 29.Kh2 Rxc1 30.f3 Qf4+ 31.g3 Qxf3 32.Rd2 Rh1# 0-1

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