Showing posts with label drewbear. Show all posts
Showing posts with label drewbear. Show all posts

Friday, April 12, 2019

Jerome Gambit Declined: Still Grumpy

I'm still feeling grumpy about the Jerome Gambit Declined (see my previous post, "Jerome Gambit Declined: Table Turned"), but it's an even-handed grumpiness. Let me show you what I mean.

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Ke7



This is how my most recent opponent played. Declining the offer of the Bishop is rare, and doing so by moving the King to e7, instead of f8, is even more rare.

5.Bxg8

This was a suggestion from my last post, and it should be considered, if only because it "solves" the issue of where, otherwise, to retreat the Bishop.

5...Qxg8

The correct recapture, but only seen in 1 of 8 games in The Database. The problem with 5...Rxg8, seen as early as Drewbear - AAlekhine, Jerome Gambit thematic tournament, ChessWorld.net, 2007 (1-0, 33) is that White replies 6.d4, threatening to skewer Black's King and Queen with 7.Bg5+, thus winning a piece.

Alas, only two players responded correctly to 5...Rxg8 - Drewbear, in 2007, and Bill Wall, in 2015 - the latter, the game ended after 10 moves.

As for the text, I have only one game to guide me, a lightning game from 2008. We can follow that for a bit.

6.d4

This is kind of funny. Stockfish 10 prefers 6.Nc3 d6 7.Nd5+ Kd8 8.d4 exd4 9.Bg5+ Kd7 10.0-0, giving up a pawn to do - what? He develops his Bishop, forcing Black's King to block Black's light-squared Bishop, which, in turn, blocks Black's Rook... Certainly a Jerome Gambit strategy if ever there was one.

6...exd4 

7.Bg5+

Striking at the King, although, with the Black Queen at g8, the move is not as strong. Probably 7.c3 was better, when Black could try 7...dxc3 or 7...d5. White would have the safer King, but he would be playing quite a different game than the usual Jerome Gambit.

7...Kd8 8.0-0

Reasonable, although the computer recommends 8.c3

8...Be7

Simply allows White to recover his pawn.

9.Bf4

Fine, but 9.Bxe7 Kxe7 10.Nxd4 was hard to argue with. 

9...Qf7

Now a tactical skirmish advanced White's game.

10.Bxc7 d6 11.Nxd4 Kd7 12.Nxc6 Kxc7 13.Nxe7 Qxe7 14.Re1 Rf8

Here, the clock seemed to step in.

15.e5 Qh4 16.Qe2

Instead, 16.Qxd6 was checkmate, but, remember, this was a bullet game. White won at move 32.




[This is blog post #2,750. Thanks for reading!]

Wednesday, June 21, 2017

Jerome Gambit: A Machine Idea

Besides being used to annotate Jerome Gambit games of interest, computer programs have served as proponents or opponents in Jerome and Jerome-related games. The program below, GriffyJr, has visited this blog on several occasions - for starters, check out "Bots on Our Side" Part 1Part 2  and Part 3 as well as "Ionman vs the Bots".

In today's game we examine the most recent example of a computer - generated move. There is still a lot of game to play afterward, however.

Petasluk - GriffyJr
5 0 blitz, FICS, 2017

 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ 



4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ke6 7.f4 Bd4 



An interesting and somewhat unusual idea. The earliest example of it in The Database was played in 2002 by the computer program BigBook at the online site FICS.

8.Qf5+

Instead, 8.c3 was seen in the oldest and most recent games with the line in The Database: 8...Nd3+ 9.Kd1 (9.Kf1 Nxc1 10.cxd4 a6 11.Qe5+ Kf7 12.Nc3 Nd3 13.Qf5+ Qf6 14.Qxf6+ Nxf6 15.e5 Ne8 16.f5 Nxb2 17.Rb1 Nd3 18.g3 a5 19.a3 b6 20.Ke2 Ba6 21.Ke3 Bc4 22.Nb5 a4 23.Rhc1 Nxc1 24.Rxc1 Bxb5 25.h4 c6 26.g4 d6 27.g5 dxe5 28.dxe5 c5 29.d4 cxd4+ 30.Kxd4 Be2 31.e6+ Ke7 32.Rc6 b5 33.Rb6 Nd6 34.Rc6 Nxf5+ 35.Ke5 Nxh4 36.Rc7+ Kf8 37.e7+ Ke8 38.Ke6 Ng6 39.Rc2 Bf1 40.Rf2 Bd3 White forfeited on time, megagurka - BigBook, FICS, 2002) 9...Nf2+ 10.Ke2 Nf6 11.Qf5+ Kf7 12.cxd4 Nxh1 13.d3 d5 14.e5 Bxf5 White resigned, Petasluk - GriffyJr, FICS, 2017. 

And there was also another computer-with-black game: 8.f5+ Kd6 9.d3 g6 10.Qe2 gxf5 11.c3 Qh4+ 12.g3 Bxc3+ 13.bxc3 Qg4 14.d4 Nf3+ 15.Kf1 Qh3+ 16.Kf2 Nxh2 17.Bf4+ Ke7 18.exf5+ Kf8 19.Nd2 Nh6 20.Bxh6+ Qxh6 21.Kg2 Qg5 22.Rxh2 Qxf5 23.Rf1 d5 24.Rxf5+ Bxf5 25.Qe5 Kf7 26.Rh5 Bd7 27.Qxd5+ Kg6 28.Ne4 Rae8 29.Qg5+ Kf7 30.Qf6+ Kg8 31.Rg5 checkmate, Moller,M - Mephisto, Denmark 2008.

Interestingly, Stockfish 8 suggests 8.fxe5 g6 9.Qg4+ Kf7 10.Qf4+ Kg7 11.c3 Bb6 12.a4 a5 13.d4 d6 14.O-O Qe7 15.exd6 cxd6 16.Na3 Be6 17.Kh1 h6 18.d5 Bd7 19.Nc4 Bc5 20.e5 Rf8 21.Qxf8+ Qxf8 22.Rxf8 Kxf8 23.Bf4 Ne7 with an even game because White's pawns are balancing out Black's extra piece. 

8...Kd6 
9.fxe5+ 

A clear improvement over 9.c3 Nd3+ 10.Ke2 Ne7 11.e5+ Nxe5 12.fxe5+ Bxe5 13.Qd3+ Ke6 14.Qc4+ d5 15.Qg4+ Kd6 16.d4 Bxg4+ White resigned, fehim - blik, FICS, 2006. (Yes, blik is a computer.)

9...Bxe5 

If it can't see a reason not to, a computer will grab material. Here GriffyJr shows some nearsightedness. 

10.d4

Yes.

Interestingly, two earlier several-days-per move games (all players human) missed the idea:

10.O-O Qh4 11.h3 Qg3 12.Rf2 Nf6 13.d4 Bxd4 14.Bf4+ Kc6 15.Bxg3 Bxf2+ 16.Bxf2 d6 17.Qa5 Nxe4 18.Qa4+ Kd5 19.Nc3+ Nxc3 20.bxc3 Ke6 21.Re1+ Kf6 22.Qf4+ Kg6 23.Re3 Bf5 24.Rg3+ Kf6 25.Bd4+ Ke6 26.Re3+ Kd7 27.Qxf5+ Kd8 28.Bxg7 Rg8 29.Bf6 checkmate, blackburne - eddie43, Jerome Gambit thematic, ChessWorld.net, 2008; and

10.c3 Nh6 11.Qf3 c5 12.Qd3+ Kc7 13.Na3 a6 14.Nc4 d6 15.Rb1 Qh4+ 16.g3 Qh3 17.Nxe5 dxe5 18.Qe3 b6 19.b4 Rf8 20.bxc5 b5 21.Ba3 Ng4 22.Qg5 Rf7 23.Qh4 Qg2 24.Qxg4 Bxg4 White resigned, Gary_Seven - drewbear, JG3 thematic, ChessWorld.net 2008

10...Qh4+


GriffyJr decides to mix it up.

11.Kf1 Qf6 

Yikes. Instead, GriffyJr gets mixed up. I have no idea how or why. Much better was 11...Kc6.

12.dxe5+ Qxe5 13.Qxe5+ 

Oh, dear. The crusher was, of course, 13.Bf4 winning Black's Queen. These things happen in blitz games.

13...Kxe5 

Even game.

14.Nc3 Nf6 15.g3 Nxe4 16.Bf4+ Kf5 17.Nxe4 Kxe4 18.Re1+ Kf5 19.Kg2 b6 20.Rhf1 Bb7+ 21.Kh3 Ba6 22.Rf2 c6 




Play continues in a Queenless middlegame, about balanced, despite White's pawn minus (because of his activity).

23.Be5+ Kg6 24.Rd2 d5 25.Rd4 Bc8+ 26.Kg2 Bf5 27.h3 Rhe8 



By focusing on development Black has pulled ahead. Still, if White can exchange Rooks, the possibility of a drawn bishops-of-opposite-color endgames is there.

Unfortunately, the computer can move lightning fast, while the human actually has to think - a disadvantage in blitz. White makes a tactical slip.

28.g4 Bxc2 29.h4 Be4+ 30.Kg3 Rxe5 White resigned




Wednesday, July 27, 2016

Jerome Gambit: Short Game, Longer Notes


If you are aware of your opponent's plan, it is always a temptation to refuse to go along with it. The following game is an example, however, where this ploy fails - fairly quickly.

Wall, Bill - Guest2877685
PlayChess.com, 2015

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 
4.Bxf7+ Ke7 



The Jerome Gambit Declined.

The Database has 42 games with this position, with White scoring 72%.

The more popular way of declining the piece is 4...Kf8. The Database has 271 games with this line, with White scoring a more modest 55%.

Still, it is important to point out that The Database has 12,603 games with the capture 4...Kxf7 with White scoring 44%.

Black, take the Bishop.

We are looking at a Bill Wall game, however, so it is relevant to note that he has scored 91% with White in the Jerome Gambit accepted lines, as opposed to 100% with White against the Jerome Gambit declined 4...Ke7 and 4...Kf8.

5.Bxg8 Rxg8 6.d4 Black resigned


White threatens Black's Bishop on c5, as well as the skewer 7.Bg5+ threatening to win the enemy Queen.

Instead of ending at this point, drewbear - AAlekhine,  Jerome Gambit Thematic Tournament  ChessWorld.net, 2007 continued: 6...h6 7.dxc5 d6 8.cxd6+ cxd6 9.h3 Kd7 10.a3 Kc7 11.b4 Rf8 12.b5 Na5 13.Qd2 Kb8 14.Bb2 Nc4 15.Qc3 Nxb2 16.Qxb2 Qa5+ 17.Nc3 Bd7 18.O-O a6 19.bxa6 Rxa6 20.Rab1 b6 21.Nd5 Bb5 22. Rfc1 Ka7 23. Nc7 g5 24.Nxb5+ Kb8 25.Nxd6 Qc5 26.Qxe5 Qxe5 27.Nxe5 Rh8 28.Ndc4 b5 29.Rxb5+ Kc7 30.Rd1 h5 31.Rd7+ Kc8 32.Nb6+ Kb8 33.Nc6 checkmate

That game was from an interesting Jerome Gambit thematic tournament. See "Jerome Gambit for Dummies (5)" for a study that I made of the effect of playing the Jerome Gambit.

After that, you might want to read the earlier "Jerome Gambit for Dummies (4)"! That post refers to a study of the effect of one player's knowledge of a particular line of play - suggesting that a study of the Jerome Gambit (or any particular opening) could give additional benefits to the attacking player.

Friday, February 15, 2013

Opening Report (Part 3)



I decided to have ChessBase8 give me an Opening Report on the Jerome Gambit, based on The Database. I got a whole lot of information, and I was only dealing with the first few moves...

Opening report

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+

9062 games in 'TheDatabase'


b) 4...Kf8

207 games, 2000-2012, 
Black scores averagely (44%).
Elo-Ø: 1353, 193 games. Performance = Elo 1304
played by: blackburne, 1778, 2/2; Talwhu, 1722, 1/1; PatOrMat, 1685, 1/1; Rolmx, 1683, 0/1; vilinar, 1666, 1/1

You should play: 5.Nc3

AAlekhine (1586) - blackburne (1795)
thematic ChessWorld.net, 2007
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kf8 5.Nc3 d6 6.d3 Kxf7 7.Ng5+ Kf8 8.Qf3+ Qf6 9.Qxf6+ Nxf6 10.0-0 Nd4 11.Be3 Nxc2 12.Rad1 Bxe3 13.Nf3 Bg4 14.h3 Bxf3 15.gxf3 Bf4 16.a3 Nd4 17.Kg2 Ke7 18.Rg1 g5 19.Kf1 Nxf3 20.Rg2 Rhg8 21.Nd5+ Nxd5 22.exd5 h5 23.h4 Nxh4 24.Rg1 g4 25.d4 Nf3 26.Rg2 h4 27.Ke2 Nxd4+ 28.Kd3 h3 29.Rgg1 h2 30.Rh1 g3 31.fxg3 Rxg3+ 32.Kc4 Rb3 33.Rxd4 exd4 34.Kxb3 d3 35.Kc3 d2 36.Kc2 Kf6 37.Kd1 Re8 38.b4 Re1+ 39.Rxe1 dxe1Q+ 40.Kxe1 h1Q+ 41.Kf2 Qe4 42.a4 Qe3+ 43.Kg2 Ke5 44.b5 Ke4 45.a5 Qf3+ 46.Kg1 Qe2 47.b6 Kxd5 48.bxa7 Be3+ 49.Kh1 Bxa7 50.a6 b6 51.Kg1 Ke4 52.Kh1 Kf3 53.Kg1 Qg2# 0-1


Plejade - erch
ChessWorld.net, 2003
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kf8 5.Nc3 Kxf7 6.Nd5 Nge7 7.Nxe7 Qxe7 8.d3 Rf8 9.Be3 Kg8 10.Bxc5 Qxc5 11.Qd2 Nb4 12.c3 Nc6 13.d4 exd4 14.Nxd4 Nxd4 15.0-0 Nc6 16.Rfd1 Ne5 17.Qd5+ Qxd5 18.exd5 Nc4 19.g3 Nxb2 20.Rd4 b5 21.d6 cxd6 22.Rxd6 Rf6 23.Rxf6 Nd3 24.Rd1 gxf6 25.Rxd3 Kf8 26.Rd6 Kf7 27.f4 a5 28.Rb6 Ba6 29.h4 d5 30.g4 b4 31.cxb4 d4 32.b5 d3 33.bxa6 Rd8 34.Rb1 Ke6 35.f5+ Ke5 36.Kf1 Kd4 37.Ke1 Ke3 38.Kd1 Kd4 39.Kd2 Rc8 40.Rb5 Rc2+ 41.Kd1 Rxa2 42.a7 Ra1+ 43.Kd2 Ra2+ 44.Kd1 Kc3 45.Rc5+ Kd4 46.Rc6 Ke3 47.a8Q Rd2+ 48.Ke1 Rg2 49.Rc3 Rg1# 0-1

Alternative: 5.Bxg8

drewbear (1718) - BrainFreeze (1685)
thematic ChessWorld.net, 2007
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kf8 5.Bxg8 Rxg8 6.d3 d5 7.Ng5 dxe4 8.Nxh7+ Ke8 9.Qh5+ Ke710.Bg5+ Kd6 11.Bxd8 Nxd8 12.Qg6+ Kd5 13.Nf6+ 1-0


SIRMO (1798) - AAlekhine (1625)
thematic ChessWorld.net, 2007
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kf8 5.Bxg8 Rxg8 6.c3 Qf6 7.d3 d6 8.a4 Ke8 9.Bg5 Qg6 10.h4 h6 11.h5 Qe6 12.Bd2 Bd7 13.b4 Bxf2+ 14.Kxf2 Rf8 15.Rh3 Ke7 16.Be3 Rae8 17.b5 Na5 18.Nbd2 Kd8 19.Ke2 Kc8 20.c4 g5 21.Nh2 Qf6 22.Rf3 Qe6 23.Qf1 g4 24.Rxf8 g3 25.Rxe8+ Bxe8 26.Nhf3 Bxh5 27.Qh1 Qf7 28.Qh3+ Kb8 29.Qxg3 b6 30.Bxh6 Nb7 31.Qg7 Qxg7 32.Bxg7 Nc5 33.a5 Ne6 34.Bf6 Nf4+ 35.Kf1 Nxd3 36.axb6 cxb6 37.Be7 Kc8 38.Bxd6 Kd7 39.Nxe5+ Nxe5 40.Bxe5 Ke6 41.Bc7 Kd7 42.Rxa7 Kc8 43.Bxb6 Kb8 44.c5 Bd1 45.Nc4 Bb3 46.Nd6 Bc2 47.Rd7 1-0


Superpippo (1597) - TajniDobrovoljci (1607)
FICS rated blitz game, 2001
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kf8 5.Bxg8 Kxg8 6.0-0 d6 7.c3 Bg4 8.d4 exd4 9.Qb3+ Kf8 10.Nxd4 Bxd4 11.cxd4 b6 12.Be3 Qf6 13.Nd2 Nxd4 14.Bxd4 Qxd4 15.Nf3 Bxf3 16.Qxf3+ Ke7 17.Rad1 Qf6 18.e5 Qxf3 19.exd6+ cxd6 20.Rfe1+ Kf7 21.gxf3 Rhd8 22.Re4 d5 23.Rh4 h6 24.Kg2 Rd7 25.f4 Rad8 26.Kf3 Re7 27.Rh5 d4 28.Re5 d3 29.Ke3 d2 30.Rxd2 Rxd2 31.Kxd2 Rxe5 32.fxe5 g5 33.Ke3 Ke6 34.Ke4 h5 35.f4 gxf4 36.Kxf4 a5 37.a4 Kd5 38.Kf5 Kc4 39.e6 Kb3 40.e7 Kxa4 41.e8Q+ Kb3 42.Qe2 Kb4 43.Qc2 b5 44.Qc3+ Ka4 45.Qa3# 1-0

drewbear (1718) - karmmark (1387)
thematic ChessWorld.net, 11.2007
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kf8 5.Bxg8 1-0


LSS (1875) - KaptKoca (1614)
FICS server game, rated blitz match, 2000
1.e4 e5 2.Bc4 Nc6 3.Nf3 Bc5 4.Bxf7+ Kf8 5.Bxg8 Rxg8 6.0-0 d6 7.d3 h6 8.Nc3 Bg4 9.h3 Bh5 10.Kh1 Ke8 11.g4 Bf7 12.Nh2 Rf8 13.f4 exf4 14.Rxf4 Ne5 15.Nd5 Bxd5 16.Rxf8+ Kxf8 17.exd5 Qh4 18.Qf1+ Kg8 19.Qg2 Rf8 20.b4 Bb6 21.Bb2 Rf2 22.d4 Rxg2 23.Kxg2 Nc4 24.Bc3 Ne3+ 25.Kh1 Qxh3 26.Rg1 Nxc2 27.Bb2 Nxd4 28.Bxd4 Bxd4 29.Rg2 Be5 30.a4 Bxh2 31.Rxh2 Qxg4 32.b5 Qxa4 0-1

Superpippo (1678) - raffa (1406)
FICS rated blitz game, 2002
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kf8 5.Bxg8 Rxg8 6.d4 exd4 7.c3 Qf6 8.cxd4 Nxd4 9.Nxd4 Bxd4 10.0-0 d6 11.Nc3 Bxc3 12.bxc3 Qxc3 13.Bg5 g6 14.Rc1 Qe5 15.f4 Qxe4 16.Re1 Qf5 17.Rxc7 Rg7 18.Qxd6+ 1-0

--------------------------------------------------------------------------------

c) 4...Ke7

33 games, 1999-2011,
Black scores badly (29%).
Elo-Ø: 1287, 31 games. Performance = Elo 1125
played by: agno, 1607, 0/1; MRKumar, 1602, 0/1; AAlekhine, 1601, 1/2; Brown, 1552, 1/1; Bucephale, 1528, 0/1

You should play: 5.Nxe5

Nesseerd (1111) - nontheist (1291)
FICS server game, rated blitz match, 2009
1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Ke7 5.Nxe5 Nxe5 6.Bd5 c6 7.Qh5 Ng6 8.Qe5+ Nxe5 0-1

Tuesday, January 24, 2012

My Horse is Faster Than Your Horse



If the finish of the following game can be considered somewhat of a horse race, then it proves to be a mismatch, and a victory for White (and the Jerome Gambit).


mckenna215 - DREWBEAR 63
Jerome Gambit Thematic Tournament
ChessWorld, 2011

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+


4...Kxf7 5.Nxe5+ Nxe5 6.d4

This move, as opposed to 6.Qh5+, saw a bit of a revival in this tournament.

6...Bd6


Not a cautious move. mckenna215 scored two points against it in the Thematic Tournament.

7.dxe5 Bxe5 8.Qd5+ Kf8

8...Ke8 9.Qxe5+ Qe7 10.Bf4 Qxe5 11.Bxe5 d6 12.Bxg7 Black resigned, mckenna215 - Magni, Jerome Gambit Thematic Tournament, ChessWorld, 2011.

9.Qxe5 d6 10.Qf4+ Qf6


Perhaps Black is already thinking about finding safety in the endgame: so, off with the Queens!

11.Nc3 Qxf4 12.Bxf4 Nf6 13.0-0-0 Be6 14.Nb5


White's Knight abandons the e-pawn to go in search of larger prey. Black's Knight grabs the pawn, but cannot keep up.

14...Nxe4 15.Nxc7 Nxf2 16.Rhf1

The line-up of pieces on the f-file spell disaster.

16...Nxd1 17.Bxd6+ Black resigned


The double, discovered check assures that White will be a piece (and a pawn) ahead: 17...Kg8 18.Nxa8 h5 19.Kxd1 Kh7 20.Rf8 Rxf8 21.Bxf8

Sunday, December 5, 2010

Daves111 Tops ChessWorld Jerome Gambit Thematic

Dominating the field like What's-His-Name in the picture on the left, Daves111 left his twelve opponents in the dust as he stormed to the top in the just-completed (or "just about" completed: the remaining game is a mate-in-two) double round robin ChessWorld Jerome Gambit Thematic Tournament.

Daves111 scored 21 points out of 24 games, taking 10 out of 12 points available with the White pieces and 11 out of 12 points with the Black pieces.

He was followed by CheckmateKingTwo and Jerome Gambit veteran DREWBEAR 63, each with 17.5 points. My guess is that the tie break will go to CheckmateKingTwo, as he beat DREWBEAR 63 in their two games.

In fourth place, with 16 out of 24 points, was blackburne, the tournament organizer and long-time member of the Jerome Gambit Gemeinde.

TWODOGS and Crusader Rabbit achieved plus scores, with 13.5 and 13 points respectively.

shm19cs broke even with 12 points and eddie43 just missed that mark with 11.5 points.

There followed LukeWarm with 10 points, stampyshortlegs with 9 points, calchess10 with 8 points and Baron wd von Blanc, heart pirate with 7 points. anbeks finished with 0 points.

The top scorers with the Jerome Gambit were Daves111 (10 points), CheckmateKingTwo (8.5) and DREWBEAR 63 (7.5).

The top scorers against the Jerome Gambit were Daves111 (11 points), DREWBEAR 63 (10 points) and CheckmateKingTwo (9 points).

The greatest upset was calchess10 winning a game against an opponent with a rating 350 points higher.

The Jerome Gambit itself scored 46%, which is consistent with how well it has done in past thematic tournaments.

Thursday, October 21, 2010

Closing the Door

Thanks to a difficult loss for CheckmateKingTwo to eddie43, Daves111 was able to close the door on the one remaining rival for first place in the current ChessWorld Jerome Gambit Thematic Tournament.

A dozen games remain unfinished in the 156-game tournament.

Daves111 leads with 21 points out of 24 games and cannot now be caught.

Second place remains a battle between DREWBEAR 63 with 17.5 points out of 22 games and CheckmateKingTwo with 12 points out of 16 games.

Next are blackburne with 15 points out of 23 games and TWODOGS with 13.5 points out of 21 games.

Tuesday, October 12, 2010

Theory From the Thematic Tourney (6)

In the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+), the Jerome Variation or Defense (4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Kf8) was analyzed by Alonzo Wheeler Jerome in 1874, and played (successfully) by him with the black pieces in two correspondence games against Daniel Jaeger in 1880.

Two games in the ChessWorld Jerome Gambit Thematic Tournament tested the utility of f2-f3 in White's attacking formation.

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Kf8

Luke Warm - CheckmateKingTwo, Jerome Gambit Thematic Tournament, ChessWorld, 2010, continued 7.Qxe5 d6 8.Qd5 Qf6 9.f3


with the plan of protecting the e-pawn and safe-guarding the f2 square. 9...Qh4+ 10.g3 Qh3 11.d3 Qg2


Instead, Black has found a way into White's castle, and nothing but ruin follows: 12.Rf1 Bh3 13.Nd2 Qxh2 14.b4 Bxf1 15.Nxf1 Qf2+ 16.Kd1 Qxf1+ 17.Kd2 Qf2+ 18.Kd1 Qxf3+ 19.Kd2 Bxb4+ 20.c3 Qf2+ 21.Kd1 Bxc3 22.Rb1 Ne7 23.Qb3 Qe1+ 24.Kc2 Ba5 25.a3 Nc6 26.Qc4 Qe2+ 27.Kb3 Ne5 28.Qd4 Qxd3+ 29.Qxd3 Nxd3 White resigned


White was more successful in using f2-f3 to establish his pawn center in blackburne - DREWBEAR 63 Jerome Gambit Thematic Tournament, ChessWorld, 2010: (he actually reached the Jerome Defense via the Banks Variation: 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ Kxf7 5.Nxe5+ Kf8 6.Qh5 Nxe5) 7.Qxe5 d6 8.Qf4+ Nf6 9.c3 Qe7 10.f3 Kg8 11.d4 Bb6


12.Be3 c5 13.dxc5 Bxc5 14.Nd2 h6 15.0-0-0


Unfortunately, the White f-pawn now limits its Queen, and Black is able to gain a decisive material advantage: 15...Nh5 16.Nc4 Nxf4 17.Bxf4 g5 18.Bxd6 Bxd6 19.Rxd6 Be6 20.Rd4 Bxc4 21.Rxc4 b5 22.Rd4 Rd8 23.Rhd1 Rxd4 24.cxd4 Kf7 25.Kd2 Qb4+ 26.Kc1 Rc8+ 27.Kb1 Qc4 28.d5 Qc2+ White resigned

Monday, October 4, 2010

Theory From the Thematic Tourney (2)

Looking further at some of the theoretical implications of the ChessWorld Thematic Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) Tournament, I was sure that the 5.Ng5+ line of the Jerome Gambit (after 4...Kxf7) had been finally disposed of by the game DREWBEAR 63 - Daves111 (see "Death of a Variaton").  

A quick glance at the updated New Year's Database, however, shows that this is not so: there are five games that have appeared after my "concluding" post on the topic, including two wins with White by digitalthunder, against (slightly) higher rated opponents:

digitalthunder - funkonfusion
blitz, FICS, 2010

1.e4 Nc6 2.Nf3 e5 3.Bc4 Bc5 4.Bxf7+ Kxf7 5.Ng5+ Qxg5 6.0-0 d6 7.d4 Nxd4 8.Bxg5 Black resigned




digitalthunder - kakaStain
blitz, FICS, 2010

1.e4 e5 2.Bc4 Bc5 3.Nf3 Nc6 4.Bxf7+ Kxf7 5.Ng5+ Ke7 6.Nf3 Nf6 7.d4 exd4 8.e5 Ne4 9.Qe2 d3 10.Qxe4 Kf7 11.Ng5+ Kf8 12.Qd5 Bxf2+ 13.Kxf2 dxc2 14.Qf7 checkmate

What can I say??

Never say Never...

graphic by Jeff Bucchino, the Wizard of Draws

Tuesday, September 21, 2010

First Split Point

With 129 of the 156 games (83%) of the ChessWorld Jerome Gambit Thematic Tournament complete, the players have seen their first drawn game. That's a rate of less than 1% of the games!


This balanced position is from DREWBEAR 63 - TWODOGS. The somewhat "open" position of the Kings, the presence of Queens who can check at will, and the existence of Bishops-of-opposite-colors all suggest a possible draw.

This happens, but not as expected.

27.Qd8+ Qe8 28.Qxc7 Bd5


This slip gives White a winning advantage.

29.Qd6+ Qe7 30.Qxd5 g5 31.Qf5+ Ke8 32.Qg6+ Kd7 33.Qxh6 Qe5+ 34.Kg2 Qd5 35.Bxg5 e3+


White's extra piece is enough to win, but he has been picking up stray pawns as well. Black's chances lie in repeatedly checking White's King, as it is unlikely that he will be able to promote his passed pawn on e3.

36.Kf1

An understandable slip that gives away a half point.

Necessary was the paradoxical 36.Kg3, moving the White King temporarily away from the passer, but giving it shelter from enemy checks. After 36...e2 the King can return with 37.Kf2, and although Black will be able to grab a couple of pawns in exchange for the pawn on e2, he will not be able to check the enemy King enough to force the draw.

36...Qf3+ 37.Kg1 Qd1+

If Black tries to advance the pawn with, say, 37...Qf2+ 38.Kh1 e2 he gets checkmated 39.Qd6 Ke8 40.Qe7#. Also, if he gives White a chance, the first player will chop off the passed pawn.

38.Kg2 Qe2+ 39.Kh1 Qf1+ Drawn




 

Sunday, September 5, 2010

King Daves111 ?

The Jerome Gambit Thematic Tournament taking place at Chess.com looks like it is close to crowning its winner.

Daves111 leads with 21 points, having finished all 24 of his games.

If TWODOGS, at 8 points from 11 games, wins all of his remaining games (13) he could catch Daves111 and tie for first.

Of course, if dark horse CheckmateKingTwo, at 2 points from 4 games, wins his final 20 games, he could leapfrog over both Daves111 and TWODOGs...

Not in the battle for top honors, but fighting for second place, are DREWBEAR (17 points out of 21 games) and stampyshortlegs (9 points out of 16 games).

Blackburne (12 points out of 21 games) and Crusader Rabbit (10 points out of 18 games) are on their heels.

Monday, August 23, 2010

You don't tug on Superman's cape,
You don't spit into the wind,
You don't pull the mask off that old Lone Ranger,
And you don't mess around with Slim.
                                  -- "You Don't Mess Around With Jim" by Jim Croce

If Bill Wall does you the favor of giving you "Jerome Gambit odds," do yourself a favor and try not to match tactics with him. It can only turn out one way...

billwall - mukak
Chess.com, 2010


1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+


4...Kxf7 5.0-0

One of the "modern" Jerome Gambit variations. White decides to offer only one piece, and then see what he can do with what Black eventually gives him.

5...Nf6 6.d3 h6 7.Be3 Be7 8.c4


Locking down the square d5. Often the watchwords of the "modern" variations are: no hurry, no error.

Also seen: 8.Nc3 a6 9.a3 Rf8 10.d4 exd4 11.e5 dxe3 12.exf6 exf2+ 13.Kxf2 Bxf6 14.Kg1 Kg8 15.Qd5+ Kh8 16.Ne4 Bxb2 17.Rae1 d6 18.Qh5 Black resigned, drewbear - Piratepaul, JG4 thematic, Chessworld, 2008.

8...d6 9.Nc3

Or, in an exhibition of computer play: 9.h3 Rf8 10.Nc3 Be6 11.Qb3 Na5 12.Qa4 c5 13.b4 cxb4 14.Qxb4 Kg8 15.Qa4 b6 16.Rab1 Rc8 17.Rfe1 Rf7 18.Nb5 Bd7 19.Qd1 a6 20.Nc3 Rb8 21.Re2 b5 22.cxb5 axb5 23.Reb2 b4 24.Rxb4 Rxb4 25.Rxb4 Qa8 26.Rb2 Rf8 27.Nb5 Qc8 28.a4 Nc6 29.Bb6 d5 30.Bc7 Be6 31.exd5 Bxd5 32.Nxe5 Nxe5 33.Bxe5 Nd7 34.Rc2 Qd8 35.Bc7 Qe8 36.Qg4 Bc5 37.d4 Nf6 38.Qe2 Bb4 39.Qxe8 Rxe8 40.Be5 Ra8 41.Bxf6 gxf6 42.Nc7 Be4 43.Re2 Rxa4 44.Rxe4 Bd6 45.g3 Bxc7 46.Rg4+ Kh7 47.Kg2 f5 48.Rh4 Bd6 49.Kf3 Ra3+ 50.Ke2 Kg7 51.Rh5 Kg6 52.g4 f4 53.Rd5 f3+ 54.Kd1 Bb4 55.Kc2 Be1 56.Rd6+ Kg7 57.Rd7+ Kf8 58.Kb2 Ra5 59.Rd6 Kg7 60.Rd7+ Kf6 61.Rd6+ Kg5 62.Rd7 Bxf2 63.Kc3 Be1+ 64.Kd3 Ra3+ 65.Ke4 f2 66.Rd5+ Kh4 67.Rh5+ Kg3 68.Rf5 Kg2 69.g5 hxg5 70.Rxg5+ Rg3 71.Rf5 Bd2 72.Rf8 Re3+ 73.Kd5 Rf3 White resigned, Hiarcs 9 - Junior 7, The Jeroen Experience, 2003.

9...Bg4 10.h3 Bh5 11.g4 Bg6


12.Nh4 Rf8 13.Qb3


13...Nxg4

Uncovering an attack on White's Knight on h4. White has an uncovered attack of his own, although for now Black is okay.

14.c5+ Kf6

Suddenly Black is much worse.

Rybka suggests a roughly equal game after 14...d5 15.exd5 Na5 16.Qa4 Bxh4 17.Qxg4 Qf6 18.Ne4 Bxe4 19.Qxe4.




analysis diagram







15.Nd5+ Kf7 16.Nxe7+ Kxe7 17.Nxg6+ Kd7 18.Nxf8+ Qxf8


19.hxg4

A nice touch: finally capturing the Knight puts White a Rook ahead.

19...Rb8 20.cxd6 cxd6 21.f4 exf4 22.Rxf4 Qd8 23.Rf7+ Kc8 24.Qe6+ Black resigned



It is mate next move.


Wednesday, August 11, 2010

Tournament Numbers

In the current Jerome Gambit Thematic Tournament at ChessWorld, Daves111 continues to lead the pack with 17 wins out of 18 games, with 6 more games to finish.

In second place is DREWBEAR 63 with 14 wins in 16 games, followed by blackburne with 12 wins in 19 games.

Off the pace, but only because they have completed fewer games, are stampyshortlegs at 7 wins in 10 games and Crusader Rabbit with 6 wins in 10 games.

TWODOGS, at 4 wins in 4 games, and CheckmateKingTwo, with 2 wins in 2 games, continue as dark horses.

So far in this tournament the Jerome Gambit has scored 40% in 89 completed games.

This can be compared with data drawn from the updated New Year's Database, where 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+ has scored 44% in 5,628 games. For the record, in the same database the Blackburne Shilling Jerome Gambit, 1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4 4.Bxf7+, has scored 56% in 2,472 games; and the Semi-Italian Jerome Gambit, 1.e4 e5 2.Nf3 Nc6 3.Bc4 h6 and 5.Bxf7+ has scored 57% in 3,106 games.