Bots on Our Side (Part 3)

Most chess-playing computer programs have a "book" in the software that lays out opening lines for the program to play. This saves on computing time - i.e. why analyze the "best" 6 or 8 opening moves, game after game - and makes sure that the program gets off to a reasonable start. It can include the latest preferences of super-Grandmasters, or the favorite moves of the programmer.

Given that the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) is not likely to be deemed "best" play for White by the analysis of any competent computer, any time the opening is played by a program, it is likely that the Jerome has been included in the opening "book".

A computer program dedicated to playing the Jerome Gambit - like Brause, focused on the Halloween Gambit, mentioned in an earlier post - would be a gift to the Jerome Gambit Gemeinde; but, alas, such a thing apparently does not (yet) exist. 

I cross-checked the list of 130 or so computer "players" at the Free Internet Chess Server with the roughly 55,000 games in The Database. I found 9 additional (see Part 1 and Part 2 for the games of  GriffySr and GriffyJr) games showing a variety of Jeromes - the Jerome Gambit proper, the Abraham Jerome Gambit, the Blackburne Shilling Jerome Gambit, and the Semi-Italian Jerome Gambit.


Gamin - mscp
blitz, FICS, 2001
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kxf7 5.d3 Nge7 6.Bg5 Kg8 7.Nc3 h6 8.Bxe7 Qxe7 9.Nd5 Qd8 10.c3 a5 11.Qb3 a4 12.Qc4 a3 13.Nxc7+ d5 14.exd5 axb2 15.dxc6+ Kh7 16.Rb1 Qxc7 17.Qxc5 e4 18.dxe4 Rxa2 19.Qc4 Ra6 20.Qd3 Qxc6 21.Qc2 Kg8 22.Nd2 Ra2 23.Rxb2 Ra1+ 24.Rb1 Rxb1+ 25.Nxb1 Qa6 26.e5 g6 27Nd2 Rh7 28.Ne4 Qa1+ 29.Qd1 Qxd1+ 30.Kxd1 Rh8 31.Nd6 Bd7 32.Ke2 Rh7 33.Kd3 Bc6 34.f3 Rd7 35.Ra1 b6 36.Kd4 b5 37.Kc5 Bb7 38.Ra7 Bc6 39.Ra6 Rxd6 40.Kxd6 Bb7 41.Ra7 Bxf3 42.gxf3 g5 43.e6 b4 44.cxb4 g4 45.e7 Kf7 46.fxg4 h5 47.gxh5 Kf6 48.e8=Q Kg5 49.Qg6+ Kf4 50.Re7 Kf3 51.Qg3 checkmate

Gamin - JumpNMustangII
lightning, FICS, 2001

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kxf7 5.Nxe5+ Nxe5 6.d4 Bb4+ 7.c3 Qh4 8.O-O Nc6 9.Qf3+ Qf6 10.Qh5+ g6 11.Qd5+ Qe6 12.Qxe6+ dxe6 13.cxb4 Nxd4 14.Na3 Ne2+ 15.Kh1 Nf6 16.Re1 Nxc1 17.Raxc1 c6 18.Nc4 Rd8 19.e5 Nd5 20.Nd6+ Ke7 21.Re4 a5 22.b5 cxb5 23.Rh4 h5 24.Nxb5 Nb4 25.Nd6 Bd7 26.Nxb7 Rdc8 27.Rxc8 Rxc8 28.h3 Rc2 29.Nxa5 Rxb2 30.a3 Nd3 31.f4 Ne1 32.Nc4 Rxg2 33.Nb6 Rc2 34.Nd5+ exd5 35.f5 Nf3 White resigned

SiliconC - cesrmathurine
standard, FICS, 2005

1.Nf3 Nc6 2.e4 e5 3.Bc4 h6 4.d4 exd4 5.Nxd4 Bc5 6.Bxf7+ Kxf7 7.Qh5+ g6 8.Qxc5 Nxd4 9.Qxd4 Qf6 10.Qd3 d6 11.Qc4+ Be6 12.Qxc7+ Ne7 13.O-O Rac8 14.Qxb7 Rxc2 15.Qxa7 Rhc8 16.Qe3 Bc4 17.Re1 Bd3 18.Na3 Bxe4 19.Qxe4 Qxf2+ 20.Kh1 Re2 21.Qxe2 Qxe2 22.Rxe2 Nf5 23.g4 Nd4 24.Re4 Nf3 25.Rf4+ Kg7 26.Rxf3 Black resigned

fjjvh - nicoben
blitz, FICS, 2006
1.e4 e5 2.Bc4 Bc5 3.Bxf7+ Kxf7 4.Qf3+ Nf6 5.Qb3+ Kf8 6.Qf7+ Kxf7 7.Nf3 Ng4 8.Nxe5+ Nxe5 9.f4 Ng4 10.h3 Nf6 11.e5 Ne4 12.e6+ Kxe6 13.f5+ Kxf5 14.Rf1+ Kg5 15.d3+ Kg6 16.Rf6+ Kxf6 17.Bg5+ Kxg5 18.h4+ Kxh4 19.g3+ Kxg3 20.dxe4 Qe8 21.a4 Qxe4+ 22.Kf1 Qxc2 23.Ra3+ Bxa3 24.Nxa3 Qxb2 25.Nc4 Qg2+ 26.Ke1 Qf2+ 27.Kd1 Qf1+ 28.Kd2 Qxc4 29.a5 b6 30.Ke3 bxa5 31.Kd2 Re8 32.Kd1 Kf2 33.Kd2 Re2+ 34.Kd1 Qc2 checkmate


Gamin - cccolts
blitz, FICS, 2007
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kxf7 5.d3 h6 6.O-O Nf6 7.Be3 Bxe3 8fxe3 Rf8 9.c3 Kg8 10.Nbd2 d6 11.d4 Bg4 12.Qb3+ Kh8 13.Qxb7 Qd7 14.Qa6 Bxf3 15.Rxf3 Rab8 16.Rb1 Rb6 17.Qa3 Re8 18.d5 Ne7 19.Qxa7 Reb8 20.b3 Ng6 21.Rbf1 Kh7 22.Rg3 R8b7 23.Qa5 Rb5 24.Qa4 R5b6 25.Qxd7 Nxd7 26.a3 Ra6 27.Rf7 Nc5 28.b4 Nd3 29.Nc4 Ne1 30.a4 Rba7 31.a5 Kg8 32.Rf1 Nc2 33.Rxg6 Black resigned

BlackDemon - wkw
lightning, FICS, 2009
1.e4 Nc6 2.Nf3 e5 3.Bc4 Bc5 4.Bxf7+ Kxf7 5.O-O Nf6 6.d3 Rf8 7.Be3 Bxe3 8.fxe3 d5 9.exd5 Nxd5 10.Nxe5+ Kg8 11.Rxf8+ Qxf8 12.Nxc6 Qc5 13.Qe2 bxc6 14.d4 Bg4 15.dxc5 Bxe2 16.Nd2 Bh5 17.e4 Nb4 18.c3 Nd3 19.b4 a5 20.a4 axb4 21.cxb4 Nxb4 22.a5 Nd3 23.a6 Ra7 24.Nb3 Bf7 25.Rd1 Bxb3 26.Rxd3 Be6 27.Rd8+ Kf7 28.Rb8 Rxa6 29.Rb7 Ke7 30.Rxc7+ Bd7 31.Kf2 Ra5 32.g3 Rxc5 33.Ke3 Ra5 34.Rb7 Ra2 35.h3 Ra3+ 36.Kf4 c5 37.h4 c4 38.Ke5 Rd3 39.Ra7 c3 40.Rc7 Kd8 41.Rc4 Bb5 42.Rc5 Ba4 43.Ke6 c2 44.Kf7 Rd7+ 45.Ke6 Rc7 46.Rxc2 Bxc2 47.Kd5 Rd7+ 48.Ke5 Re7+ 49.Kf4 Rxe4+ 50.Kf3 Ke7 51.Kf2 Kf6 52.Kg2 Kf5 53.Kf2 Kg4 54.Kg2 Re2+ 55.Kf1 Bd3 56.h5 Kxg3 57.h6 Re3+ 58.Kg1 Re1 checkmate


BlackDemon - abhaysonu
blitz, FICS, 2009
1. e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kxf7 5.Nc3 Nf6 6.O-O Re8 7.d3 Kg8 8Bg5 Be7 9.Bxf6 Bxf6 10.Nd5 d6 11.h3 Ne7 12.Nxf6+ gxf6 13.d4 Ng6 14.c3 Kh8 15.Ne1 Rg8 16.Qf3 Qe7 17.Kh1 Qg7 18.Rg1 Nh4 19.Qd3 Bxh3 20.Qxh3 Ng6 21.Nd3 Nf4 22.Nxf4 exf4 23.Rae1 Rae8 24.Kh2 Qg6 25.Qh4 f3 26.gxf3 Qf7 27.Rxg8+ Rxg8 28.Rg1 Rxg1 29.Kxg1 Qxa2 30.Qxf6+ Kg8 31.Qd8+ Kf7 32.Qxc7+ Kg6 33.Qxd6+ Kh5 34.Qd5+ Kh6 35.Qxa2 Black resigned


callipygian - vuhb
blitz, FICS, 2009
1.e4 e5 2.Bc4 Bc5 3.Bxf7+ Kxf7 4.Qh5+ g6 5.Qxe5 Bxf2+ 6.Kxf2 Qf6+ 7.Nf3 d6 8.Qg5 Nc6 9.Rf1 Qxg5 10.Nxg5+ Kg7 11.d3 Nd4 12.Na3 Nf6 13.c3 Ne6 14.Nb5 Ne8 15.Kg3 Rf8 16.Nxe6+ Bxe6 17.Bh6+ Kxh6 18.Rxf8 Kg7 19.Rf3 c6 20.Nd4 Bg8 21.a4 Nf6 22.a5 c5 23.Nb5 c4 24.Nxd6 cxd3 25.Rxd3 Be6 26.Kf4 Rf8 27.Re1 Nd7+ 28.Kg3 Ne5 29.Rdd1 b6 30.axb6 axb6 31.Nb5 h5 32.Nc7 Bg4 33.Rd5 Rf7 34.Ne8+ Black resigned



LittleBugger - Nicolayevich
blitz, FICS, 2012
1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4 4.Bxf7+ Kxf7 5.Nxe5+ Ke7 6.Nc3 d6 7.Nd5+ Ke8 8.Qh5+ g6 9.Nxg6 Nxc2+ 10.Kd1 Nxa1 11.Ne5 checkmate

Consolidation

The following educational game, mentioned in the previous post (see "White Punishes Errors Quickly"), was played online at InstantChess.com at its "classic" time control, 30 minutes or more per game.

SA3OD - gianluca
classic, InstantChess.com, 2016

1.e4 e5 2.Nf3 Nc6 3.Bc4 h6

The Semi-Italian Opening.

4.d4 exd4 5.Nxd4 Bc5

Asking for trouble, allowing a transposition to the Semi-Italian Jerome Gambit.

6.Bxf7+ Kf8

I know this sounds silly, but there are 30 games with this position in The Database. White scores 48%. (Which sounds even sillier.)

7.Nf5

A thoughtful idea, although stronger was 7.Nxc6!? Qh4!? 8.O-O bxc6 9.Bb3 Qxe4 when White has recovered his sacrificed piece, as a better pawn structure and a safer King.

7...Kxf7 8.Qd5+ Kf8 

Instead, 8...Kf6 would be too bold: 9.Qxc5 Nge7 10.Nc3 (10.Qc3+!) 10...d6 11.Nd5+ Nxd5 12.Qxd5 Re8 13.O-O Re5 14.Qd3 Bxf5 15.exf5 Rxf5 16.b3 Kg6 $2 17.Bb2 (17.g4!) 17...Ne5 18.Bxe5 dxe5 19.Qb5 b6 20.Rad1 Qe7 21.Rd7 Qg5 22.Rxc7 (22.Qc6+!?) 22...Raf8 23.Qe2 e4 24.Qxe4 Kh7 25.Rxa7 Kh8 26.Re7 Rxf2 27.Rxf2 Qc5 28.Ref7 Rxf7 29.Qe8+ Rf8 30.Qxf8+Qxf8 31.Rxf8+ Kh7 32.Rb8 Black resigned, MidKnightBlue - cesrmathurine, FICS, 2005. 

9.Qxc5+ d6 10.Qc3 Bxf5 11.exf5 Nf6 

White has an extra pawn (temporarily) and a safer King, but he lags in development.

12.O-O Ne7 13.Nd2 Nxf5 14.Nf3 Kf7 15.Qb3+ Kg6 

The King needed to go back to f8, as SA3OD immediatly shows.

16.Qd3 Qd7 17.Nh4+ Kf7 18.Qxf5 Qxf5 19.Nxf5 Rhe8 

20.g4

In the next few moves, White is thinking of attack. (Instead, he should heed American National Master Dan Heisman's advice to club players, that after winning material one should think about consolidation first, not wild aggression. The simple 20.Be3 comes to mind.) 

20...Re2 21.h3

Instead, the consolidating 21.Ne3! would have saved a world of headaches. 

21...Rxc2 22.f4 

Everybody is going to the party, but, by the time they get there, the party will have moved on.

White still had time for 22.Ne3, evicting the enemy Rook. Even 22.Be3 was possible, as 22...Rxb2?! would be well met by 23.Rac1!? with counterplay.

22...Re8 23.g5 Ree2 

24.Nh4

The correct way to protect g2 (and attack Black's Rook) was 24.Ne3! 

24...Ne4 25.gxh6

Instead, 25.Rf3 would have kept the enemy Knight out of g3 and lead to an even game.

25...gxh6

Better to invade: 25...Ng3. 

26.f5

Still attacking. Still overlooking 26.Rf3. 

26...h5

Black overlooks his last chance for 26...Ng3.

White is in a turned-around situation for a Jerome Gambit player, being up a piece and down a pawn. His King is in more danger, too.

Although Black has more practical chances, the game is still about even.

27.Bf4 Rxb2 28.Ng6 Rxa2 29.Rxa2 Rxa2 30.Re1 Ra4 

31.Nh8+

Not the solution to a difficult position, especially if time was getting short. Stockfish 7 suggests: 31.Kg2 Kf6 32.Kf3 Ng5+ 33.Bxg5+ Kxg5 34.h4+ Kxf5 35.Ne7+ Kf6 36.Nd5+ Kg7 37.Re7+ Kg6 38.Rxc7 b5 39.Nf4+ Kf5 40.Nxh5 Rxh4 41.Ng3+ Ke5 42.Rxa7 and White should hold on. Whew!

Now Black's game improves step-by-step.

31...Kf6 32.h4 Kxf5 33.Bg5 Nxg5 34.hxg5 Kxg5

35.Nf7+ Kg6 36.Nd8 b6 37.Ne6 c5 38.Rd1 Rg4+ 39.Kh2 c4 

40.Rxd6 Kf7 41.Nc7 Rg5 42.Rc6 Rc5 43.Rh6 Kg7 44.Re6 Rxc7 45.Kg2 b5 46.Kf2 b4 47.Ke3 b3 48.Ra6 b2 49.Ra5 b1=Q 50.Rxh5 c3 51.Rg5+ Kh6 52.Rd5 c2 53.Rd6+ Kh7 54.Kd4 Qd1+ 55.Ke5 Qxd6+ 56.Kxd6 c1=Q 57.Kd5 Rd7+ 58.Ke6 Rd2 59.Ke5 Qe1+ 60.Kf4 Rf2+ 61.Kg3 Qg1+ 62.Kh3 Rh2 checkmate