Showing posts with label sebapvar. Show all posts
Showing posts with label sebapvar. Show all posts

Monday, July 29, 2019

Jerome Gambit: What Can I Say?




In my second game in the first round of the "Italian Game Battlegrounds" tournament at Chess.com, I got the chance, again, to play in Jerome Gambit style when it wasn't absolutely necessary. What can I say? 

perrypawnpusher - Aborygen
Italian Game Battlegrounds, Chess.com, 2019

1.e4 e5 2.Nf3 Nc6 3.Bc4 Na5 




I have covered this line in many past posts. It doesn't seem to have a name. The idea, apparently, is that Black wants to exchange a Knight for a Bishop, after 4.Bb3 Nxb3, etc.

White's best response to 3...Na5 is to go along with the plan, after grabbing a pawn: 4.Nxe5 Nxc4 5.Nxc4 d5 (Stockfish's suggestion) 6.exd5 Qxd5 7.Ne3, when it is difficult to find Black's compensation for the material, other than whatever psychological discomfort White may have for being pulled out of his opening routine.

4.Bxf7+ 

The Jerome Gambit treatment. What can I say?

I have played this three times before: perrypawnpusher - metheny, blitz, FICS, 2009 (1-0, 8); perrypawnpusher - sebapvar, blitz, FICS, 2010 (1-0, 10 ); and perrypawnpusher - wred, blitz, FICS, 2011 (1-0, 35).

4...Kxf7 5.Nxe5+ Ke7 

Strange, because it seems to block Black's development, but after the game Stockfish 10 identified this move as best.

6.Nc3 Nf6 7.d4 d6 



White has 2 pawns for his sacrificed piece, and Black's King is uneasy, while one of his Knights appears unemployed.

8.Nd5+ 

The idea here is that Black needs more than 8...Nxd5 9.exd5 dxe5 because of 10.Bg5+, winning the Queen.

8...Ke8 9.Bg5

This seems to be a novelty, according to The Database, but it is a reasonable idea: if, now, 9...dxe5, then 10.dxe5, and Black's Knight at f6 is pinned and will be lost. Still, that might have been the best route for my opponent to take.

9...Be7 10.Bxf6 Bxf6 11.Qh5+ 

The idea behind exchanging on f6.

11...g6 12.Nxg6 hxg6 13.Qxg6+ 



White is down 2 pieces for the moment, but he has 4 extra pawns.

13...Kd7

Black's King seeks safety on the Queenside. It might have been a bit more secure on the Kingside, after 13...Kf8 14.Nxf6 Qe7, but White would still be better, as his 4 pawns would outweigh Black's extra piece.

14.Nxf6+ Kc6 

15.b4

Hitting the offside Knight.

15...Nc4 16.b5+ 

A two-fold move: If Black captures the pawn, White's Rook can come into play, with check, with Rb1+; and if Black does not capture the pawn, White has stopped him from playing ...b7-b5 - I had been looking at a possible Qf7, attacking the Knight and possibly bringing the Queen over to the Queenside, but what if the defender just supported the Knight with the pawn? 

16...Kb6 

Black does not want the pawn, yet, and now White's 17.Qf7 would be met by 17...Rf8, and things would not be so clear after 18.Qxc4 Qxf6. Time to get White's Knight out of the way.

The position is complicated, but White has to at least gain back material - while threatening checkmate various ways.

17.Nd5+ Ka5 

Persistent in resisting the pawn, but this opens up another avenue of attack for me.

18.Qg3 

If Black now captures the b-pawn, White gathers in some material: 18...Kxb5 19.Qb3+ Kc6 20.Qxc4+ Kd7 21.Nxc7 and White would simply be 4 pawns up. In the meantime, White threatens to bring his Queen to c3 or b3 - with check.

18...Qh4 

Threatening White's pawn at e4, and possibly, after that, White's uncastled King; but it is too late. White keeps moving with check.

19.Qc3+ Kxb5 20.Nxc7+ Kb6 21.Nxa8+ Black resigned



If, now, 21...Kb5, White's Rook would finally enter the fray with 22.Rb1+, and the Knight would be lost.

Sunday, April 25, 2010

A Line of Play Everyone Should Know About


Sometimes your opponent will not even wait until you play the Jerome Gambit (1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.Bxf7+) to try to cross up your plans.

Most readers are familiar with the Blackburne Shilling Gambit (1.e4 e5 .Nf3 Nc6 3.Bc4 Nd4) which is such an effort, but it is not Black's only way of trying to offer a surprise.

perrypawnpusher  - sebapvar
blitz FICS, 2010

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


Let me first say that this is not a good idea, that White can now get an advantage with the logical 4.Nxe5, winning a pawn.

4.Bxf7+

Irresistable. See "Offside!" and "The Other Side".

My own database has 1,270 games with this line in it, with White scoring 70%. This is a tribute to those who play White, as the position soon arrived at is "objectively" equal.

4...Kxf7 5.Nxe5+


5...Ke8

Already a problem for Black, as this is the weakest of his four possible replies.

After 5...Kf6, White has a number of interesting moves, including 6.d4 and the untested 6.Nc3!?, but his strongest is probably 6.Qh5 when 6...g6 is forced, and then the "retreat" 7.Qf3+ causes all sorts of problems, for example 7...Ke6 (if 7...Kxe5 then 8.d4+) 8.d4 and Black will have to give back material, as in 8...Bb4+ 9.c3 Qf8 10.cxb4 Qxf3 11.Nxf3 Nc4.




analysis diagram







A bit better move for Black, leading to an even game, is 5...Ke6, when 6.d4 (6.Qg4+ Kxe5 7.Qf5+ Kd6 8.Qxa5 Qf6 may not give White enough, but should be playable for the adventurous) Nf6 is probably best met by the untested 7.Nd3, with pawn play in the center to follow.




analysis diagram







Black's best chance for advantage (see my comment after move 3) – if only for confusion's sake – is 5...Ke7.

After a lot of thought, Rybka thinks that the game should continue 6.Nc3 Qe8 7.d4 Kd8 8.0-0 Nc6 9.Bf4 d6 10.Nf3 Bd7, which looks about even to me, although I can't explain some of Black's moves. (I mean, he's not going to castle Queenside, right?)




analysis diagram







6.Qh5+


Back to the game.

6...g6 7.Nxg6


7...Bg7

Putting and end to things. He had to take the Knight with 7...hxg6. White then would have two choices, each leading to a slight advantage.

Most attractive is the grab 8.Qxh8, when 8...Kf7 9.Qc3 Nc6 gives White an edge, with a Rook and three pawns vs two pieces.

Trickier, and therefore better from a practical point of view, is to capture the pawn instead: 8.Qxg6+ Ke7 9.d4. White is then threatening all sorts of horrors starting with Bc1-g5,  and the only move to save Black is 9...Bh6.

Still, White will play 10.Bg5+ any way, and after 10...Bxg5 11.Qxg5+ Ke8 (if 11...Nf6, 12.e5) he can pick up the stranded Knight with 12.Qxa5, having four pawns for the sacrificed piece.

8.Nxh8+ Ke7 9.Qf7+ Kd6 10.Qxg7 Black resigned


White is ahead a Rook and three pawns, and threatens to capture more material.