Jerome Gambit: More GMs? (Part 2)

[continued from previous post]

Next, I decided to check out the 19 Jerome Gambit games (all from online play) in The Database where the player of the black pieces was rated 2500+, looking, again, for another GM "in real life".

I quickly tossed Hera, MaxBot, GriffySr, Sly, Dampfwalze, wkw, birdcostello, Singularity, BlackDemon, and AnderssenA at FICS, as they were all computers. They were strong - Singularity and BlackDemon were rated over 2700 on the site - but they were not human.

That left me with Topper76, at at redhotpawn.com, who I had already tried to track down (see "Jerome Gambit: More GMs? Part 1"). There were also psv2398 (account closed), amaidel (St. Petersburg, Russia, FIDE 2347), RL12 (San Juan de los Morros, Cuba, FIDE 2333), Sveti14 (FIDE 2428 with the note "This player uses chess computer assistance"), Enialios (an open account but no FIDE rating listed) and PArnaudov, at lichess.org (the last one had already been looked at by Cliff).

Whew!

So, my search to find another human grandmaster who had faced the Jerome Gambit, even in online play, did not progress beyond the original investigation by "Cliff Hardy". No surprise there; after all, he is the private investigator, not me.

But I will still keep my (private) eyes open!

Jerome Gambit Delayed: Consulting The Database and Stockfish

The following game has a line in the Jerome Gambit (Delayed?) that I am not very familiar with, so I consulted with The Database and Stockfish 8 for some assistance. It is good to see jfhumphrey move quickly to victory.


jfhumphrey - ckilee
5 0 blitz, FICS, 2017

1.e4 Nc6 2.Nf3 e5 3.Bc4 Bc5 4.O-O

4...Nf6

Transposing to a Two Knights Defense (1.e4 e5 2.Nf3 Nc6 3.Bc4 Nf6) with ...Bc5 added.

The Database has 1,148 games with this position, with White scoring 42%. (For comparison, The Database shows White scoring 45% after 1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+)

5.Bxf7+ Kxf7

Now The Database has 1,909 games with this position (oh, the joys of transposition) with White scoring 40%.

6.Nxe5+ Nxe5 7.d4

The Database has 291 games with this position, with White scoring 45%.

7...Bd6

Now, however, The Database has 35 games with this position, with White scoring 71%. From a practical point of view, Black has made an error that generally gets punished.

Interestingly enough, Stockfish 8 sees the text move as giving White less than a half of a pawn advantage. It prefers 7...d5, and this is backed up by The Database, which has 10 games with that move - all of them wins for Black.

8.dxe5 Bxe5 9.f4 Bd6 10.e5 Bc5+

Stronger than 10...Ne4?! 11.exd6 (11.Qd5+!?) Nxd6 12.Qd5+ Kf8 13.f5 Qf6 14.Nc3 c6 15.Qf3 Nf7 16.Be3 Ne5 17.Qe4 d5 18.Qd4 Kf7 19.Bf4 Re8 20.Bxe5 Qxe5 21.Qf2 Kg8 22.Rae1 Qxe1 23.Rxe1 Rxe1+ 24.Qxe1 Bxf5 25.Qe7 h5 26.h3 Bxc2 27.Qxb7 Rf8 28.Qxc6 Bd3 29.Nxd5 Rf1+ 30.Kh2 Be4 31.Qe6+ Kh7 32.Qxe4+ Black forfeited on time, Teterow - yelloman, FICS, 2011.

11.Kh1 Ne4 

Better alternatives are: 11...d6 12.exf6 Qxf6 13.Nc3 c6 (13...Qf5 14.Nd5 c6 15.Nc3 d5 16.Ne2 Re8 17.Ng3 Qf6 18.Bd2 Qxb2 19.Rb1 Qf6 20.Nh5 Qf5 21.Bc3 d4 White forfeited on time, aymmd - JabbaChess, FICS, 2012) 14.Ne4 Qf5 15.Nxd6+ Bxd6 16.Qxd6 Re8 17.Bd2 Be6 18.Bc3 Bd5 19.Qc5 Bxg2+ 20.Kxg2 Qxc5 White resigned, motorfot - theophraste, FICS, 2014;

11...Bb6 12.exf6 Qxf6 13.Qd5+ Qe6 14.Qh5+ Qg6 15.Qf3 Rf8 16.f5 Qc6 17.Qb3+ d5 18.Nd2 Kg8 19.Nf3 Qc4 20.Bg5 Qxb3 21.cxb3 Bxf5 22.Be7 Rfe8 23.Bb4 Be4 24.Ng5 h6 25.Nh3 c5 26.Bc3 Rf8 27.Rfe1 Bf5 28.Nf4 d4 29.Bd2 Rae8 30.Nd5 Black forfeited on time, jfhumphrey - Dimo, FICS, 2012; and

11...d5 12.exf6 gxf6 13.Nc3 Bf5 14.Nxd5 Bxc2 15.Qxc2 Qxd5 16.Bd2 Rag8 17.Bc3 Be3 18.Rad1 Qb5 19.a4 Qc6 20.Rf3 Bc5 21.Qf5 Be7 22.a5 Rd8 23.Re1 Rd5 24.Qe4 Rd7 25.Rh3 White forfeited on time, aymmd - GriffySr, FICS, 2011.

Incorrect are 11...Nd5 12.Qxd5+ Black resigned, Svrbt - pantyhose, FICS, 2011 and

11...Ng8 12.Qd5+ Ke8 13.Qxc5 Ne7 14.f5 Rf8 15.f6 gxf6 16.Bh6 Rg8 17.exf6 b6 18.Qh5+ Ng6 19.f7+ Ke7 20.Qg5+ Kd6 21.Rd1+ Kc6 22.Qd5 checkmate, chessmoods - MChessplayer, FICS, 2012.

Best is 11...Be7 12. exf6 Bxf6 when White has a slight edge. 

12.Qd5+ Ke8

Or 12...Kf8 13.Qxe4 d6 (13...Qe7 14.Be3 d6 15.Bxc5 dxc5 16.Nc3 Kf7 17.Rad1 g6 18.Nd5 Qe6 19.Nxc7 Rb8 20.Nxe6 Black resigned, HauntedKnight - jonisjonis, FICS, 2010) 14.e6 Qe7 15.f5 c6 16.Nc3 d5 17.Qg4 Qf6 18.Bg5 Qd4 19.Rad1 Qxg4 20.Bf4 Ke7 21.h3 Qh5 22.Rf3 g5 23.Be3 Bxe3 24.Rxe3 g4 25.Rf1 gxh3 26.Rxh3 Qg5 27.Ne2 h5 28.c3 Rg8 29.Rg3 Qxg3 30.Nxg3 Rxg3 31.Kh2 Rg8 32.b3 Kd6 33.a4 b6 34.b4 Ba6 35.Rf2 Ke5 36.e7 Rg5 37.f6 Ke6 38.Kh3 Rf5 39.Re2+ Kf7 40.g3 Black forfeited on time, HauntedKnight - heverson, FICS, 2011. 

13.Qxe4 

White has a pawn advantage. At this point the clock seems to be influencing move choices.

13...Rf8 14.Qxh7 d6 15.Qxg7 dxe5 16.Qxe5+ Be7 

White will finish the game off in short order. 

17.Nc3 Bf5 18.Be3 b6 19.Rad1 Qc8 20.Nd5 Rf7 21.Nxc7+ Kf8 22.Qh8 checkmate

Bots on Our Side (Part 1)

I have posted here about computer vs computer Jerome Gambit games, and about human vs computer Jerome Gambit games (see "Ionman vs the Bots").

The other day I ran into some games in The Database where a computer  - GriffySr at FICS - was playing White.

What??? 

I suddenly had visions of Steffen Jakob's Crafty clone Brause and his own creation Hossa - both set up to play the Halloween Gambit (1.e4 e5 2.Nf3 Nc6 3.Nc3 Nf6 4.Nxe5!?).

How cool would it be to have an engine playing the Jerome Gambit!?

It turns out, GriffySr is not that engine, but it was fun to look at its games, anyway!

GriffySr - asmsk
standard, FICS, 2002

1.e4 e5 2.Nf3 Nc6 3.Bc4 Na5

Okay, if you play the Jerome Gambit, someday you will face this move. The "objectively" best response is 4.Nxe5, but that shouldn't be your first choice - and it is not GriffySr's choice, either.

4.Bxf7+ Kxf7 5.Nxe5+ Ke8 6.Qh5+ g6 7.Nxg6 hxg6 8.Qxg6+ Ke7 9.d4 Bh6 10.Bxh6 Rxh6 11.Qg5+ Nf6 12.Qg7+ Ke8 13.Qxh6 c6 14.Nd2 d5 15.e5 Ne4 16.Nxe4 dxe4 17.Qg6+ Kf8 18.e6 Qxd4 19.Qf7 checkmate


Here's another line.

GriffySr - ccie
standard, FICS, 2008

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

Again, if you are looking for a Giuoco Piano to transform into a Jerome Gambit, the Semi-Italian defense is designed to side-step that. White can temporize with 4.0-0 or 4.Nc3 and hope Black will then play 4...Bc5 - or he can advance in the center.

4.d4

After 4.Nc3 Black added a second bad idea, and was crushed: 4...Na5 5.Bxf7+ Kxf7 6.Nxe5+ Ke8 7.Qh5+ g6 8.Qxg6+ Ke7 9.Nd5 checkmate, GriffySr -mackadee, FICS, 2002.

4...exd4

The alternatives are poor, but sometimes played:

4...Nxd4 5.Bxf7+ Kxf7 6.Nxe5+ Ke8 (6...Kf6 7.Qxd4 Black resigned, GriffySr - ankoay, FICS, 2009) 7.Qh5+ Ke7 8.Ng6+ Kf6 9.Qh4+ Kxg6 10.Qxd8 Be7 11.Qxc7 Black resigned, GriffyJr - ManOOwar, FICS, 2003.

4...d6 5.dxe5 Nxe5 6.Nxe5 dxe5 7.Bxf7+ Ke7 (7...Kxf7 8.Qxd8  Black resigned, GriffySr - JayadiHendro, FICS, 2009) 8.Qxd8+ Kxd8 9.Nc3 c6 (9...Bb4 10.Bd2 Bxc3 11.Bxc3 Ke7 12.Bxg8 Rxg8 13.Bxe5 c6 14.O-O-O Be6 15.b3 g6 16.Bd6+ Ke8 17.Rhe1 Rg7 18.Kb2 Rd7 19.Bc5 Black forfeited by disconnection, GriffySr - JayadiHendro, FICS, 2009) 10.Be3 Nf6 11.O-O-O+ Kc7 12.f3 Bd7 13.a3 (13.Na4 b6 14.c4 Rd8 15.c5 b5 16.Nc3 Be7 17.Kb1 Rhf8 18.Bb3 a6 19.Rhe1 g5 20.h4 Rg8 21.Bxg8 gxh4 22.Bf7 h5 23.Bg5 Rf8 24.Bxf6 Rxf7 25.Bxe5+ Kc8 26.Kc2 Be6 27.Bd6 Bg5 28.Rd3 Rg7 29.Be5 Rg8 30.Rd6 Bd7 31.b4 Be7 32.Rd2 Bg5 33.f4 Be7 34.f5 Bg5 35.Rf2 Re8 36.Bd6 Bf6 37.e5 Kd8 38.exf6 Rxe1 39.f7 Black resigned, GriffySr - Sirpooba, FICS, 2009) 13...Rd8 14.Kb1 Bd6 15.Bxa7 b6 16.Bxb6+ Kxb6 17.Rxd6 Kc7 18.Rdd1 Be8 19.Rxd8 Kxd8 20.Rd1+ Ke7 21.Bb3 Bf7 22.Bxf7 Kxf7 23.Rd6 Rc8 24.a4 Ke7 25.Rd3 Nh5 26.a5 Nf4 27.Rd2 Ne6 28.Kc1 Nc7 29.Kd1 Rd8 30.Rxd8 Kxd8 31.Ke2 Kd7 32.Ke3 g5 33.Kd3 Kd6 34.Na4 Na6 35.Nb6 Kc7 36.Nc4 Nc5+ 37.Ke3 Nd7 38.a6 Kb8 39.h4 Ka7 40.hxg5 hxg5 41.Nd6 Kxa6 42.Nf7 Kb5 43.Nxg5 Kc4 44.Ne6 Nc5 45.b3+ Kc3 46.Nxc5 Kxc2 47.g4 Kc3 48.Kf2 Kd4 49.Ne6+ Kc3 50.g5 Kxb3 51.g6 Kb4 52.g7 c5 53.Ke2 c4 54.g8=Q c3 55.Qb8+ Kc4 56.Qb1 Black resigned, GriffyJr - ManchesterUtd, FICS, 2009. 

5.Nxd4 Bc5 6.Nxc6 

Or 6.Bxf7+ Kxf7 (6...Ke7 7.Nxc6+ bxc6 8.Bc4 Qf8 9.Be3 Bxe3 10.fxe3 Nf6 11.e5 Ng4 12.Qxg4 d6 13.exd6+ cxd6 14.Qe4+ Kd7 15.Rf1 Qe7 16.Rf7 Black resigned, GriffySr - sanssouci, FICS, 2006) 7.Qh5+ g6 8.Qxc5 Nxd4 9.Qxd4 Nf6 10.e5 Re8 11.O-O c5 12.Qc4+ d5 13.exd6+ Be6 14.Qxc5 Qd7 15.Nc3 Rac8 16.Qxa7 Ra8 17.Qd4 Rad8 18.Rd1 Bf5 19.Bxh6 Bxc2 20.Rd2 Qe6 21.f3 Rxd6 22.Qxd6, Black resigned, GriffySr - Mpalfi, FICS, 2006.

6...bxc6 7.Bxf7+ Kf8 8.Qf3 Ke7 9.Bf4 Nf6 10.Bg6 Ba6 11.e5 Nd5 12.Bg5+ Nf6 13.Bxf6+ Ke6 14.Qg4+ Kd5 15.Nc3 checkmate

Final Nail in the Coffin

Here we finish up burying the 3...h6 and 4...Na5 defense to the Jerome Gambit by taking a look at 4.Nc3  - instead of 4.0-0 ("Too Much of A Bad Thing") or 4.c3 ("Still A Mess").

freerunner - gGgeorgGg
blitz, FICS, 2013

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

The Semi-Italian Opening.

4.Nc3 Na5 

While the Semi-Italian Opening is playable for Black, and the Semi-Italian Jerome Gambit (4...Bc5 5.Bxf7+) has its risks, the introduction of ...Na5 pushes the whole defense over the cliff.

5.Bxf7+ Kxf7 6.Nxe5+ Ke8 

6...Ke6 would get the same response. 

7.Qh5+ Ke7 

Or 7...g6 8.Qxg6+ Ke7 9.Nd5#, GriffySr - mackadee, standard, FICS, 2002. 

8.Ng6+ Kd6 

Let's face it, Black's King is already toast:

8...Kf7 9.Nxh8+ Ke6 (9...Ke7 10.Qxa5 Nf6 11.Qe5# shipwrecked - LScope, blitz, FICS 2011) 10.Qf7+ Kd6 11.Qd5+ Ke7 12.Qe5#; or

8...Ke8 9.Nxh8+ g6 10.Qxg6+ Ke7 11.Nd5#; or

8...Ke6 9.Qf5+ Kd6 10.Qd5#; or

8...Kf6 9.Qf5# moskvabr - amama, blitz, FICS, 2005. 

9.Nxh8

This wins, as does 9.Qd5#, JakartaGuy - Kiloz, blitz, FICS, 2007 and (to use White's Knight) 9.Nb5+ Kc6 10.Nd4+ Kb6 11.Qb5#.

9...Nf6 

Or 9...Qe7 10.Ng6 Qe6 11.Nxf8 Black resigned, xerthil - Tiur, blitz, FICS, 2005. 

10.Qxa5 

Picking up material while deleting a defender. Houdini gives a fun line using White's Queen Knight: 10.Nb5+ Kc6 11.Nd4+ Kd6 12.Nf7+ Ke7 13.Nf5+ Ke6 14.Nxd8+ Ke5 15.d4+ Kxe4 16.Qf3 checkmate 

10...Qe7 

11.e5+ 

Again, a line that shows the advantage of White's Knight being in play is 11.Nb5+ Ke6 12.Nd4+ Kd6 13.Nf5+ winning Black's Queen. 

11...Qxe5+ 12.Qxe5+ Kxe5 13.Ng6+ Ke6 14.Nxf8+ Kf7 15.Nxd7 Bxd7 

White has deftly exchanged a handful of pieces, leaving him simply a Rook and two pawns up. The rest of the game does not change this.

16.0-0 Re8 17.d3 g5 18.Be3 Bc6 19.Bxa7 h5 20.Bd4 Ng4 21.f3 Ne3 22.Bxe3 Rxe3 23.Rae1 Rxe1 24.Rxe1 b5 25.Ne4 Kg6 26.g3 Bd7 27.Nc5 Bc8 28.Re5 c6 29.b3 g4 30.f4 b4 31.Re4 Bf5 32.Rxb4 h4 33.Ne4 h3 34.Rb6 Bd7 35.Nc5

Fighting to the end, Black forfeited on time

Et Tu, GriffySr?

I've reported elsewhere on the phenomenal success that GriffyJr and GriffySr at FICS have had with and against the Jerome family of openings – and as clones of the chess-playing computer program Crafty, that is not a surprise.

Still, it is a bit unsettling to see one of them recently manhandle a Jerome Gambiteer in a critical theoretical line.

NIZAM - GriffySr
standard, FICS, 2010

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

4...Kxf7 5.Nxe5+ Nxe5 6.Qh5+ Ke6

Computers are far less afraid of this line than humans.

7.f4 d6

The frustrating line that computers love. There's no use playing the Jerome Gambit against a computer unless (among other things) you have a plan on how to attack this.

8.Qf5+

NIZAM launches his Queen against the defense. "Book" is 8.fxe5.

8...Ke7 9.Qg5+ Ke8 10.Qxg7

A human blitz player, seeing two pieces attacked and the enemy Queen so close to his King, might quail; but not a feeling-less computer. 

10...Qh4+ 11.g3

There was no joy in the "better" 11.Qg3 Qxg3+ 12.hxg3.

11...Nf3+ 12.Ke2 Nd4+ 13.Kd1

Allowing the finish.

13...Bg4+ 14.Ke1 Nxc2+ 15.Kf1 Qh3 checkmate

"I come to bury Caesar, not to praise him..."

It takes all kinds...

Wandering through the updated New Year's Database of Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+), Blackburne Shilling Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Nd4 4.Bxf7+), and Semi-Italian Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 h6 4.0-0/4.Nc3/4.d3 Bc5 5.Bxf7+) games, I stumbled across two players with similar names: GriffySr and GriffyJr.

They had played games from 2001 to 2010, and had FICS  ratings as high as 2366 and 2136 respectively.

Heavy hitters!

The Griffys' score with White was a blistering 99%: 33 wins, no losses, one draw (in a winning position). Their score with Black was nearly as good: 90%, from 26 wins and 3 losses.

Most of their games with White were attacks against the Semi-Italian Opening (1.e4 e5 2.Nf3 Nc6 3.Bc4 h6), and they defended brutally against the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) – some games were of theoretical interest.

I guess I wasn't too surprised when I looked into the players a bit deeper, and read

GriffyJr and GriffySr are identical Crafty binaries with hardwired search depth.

I'd already discovered GFcrafty to be a silicon-based member of the Jerome Gambit Gemeinde, too.

Well, as they say, "It takes all kinds..."