Amazing queen sacrifice!

[Jack Lad]

[d] r1bqk2r/ppp1ppbp/3p1np1/4P3/2Bn4/2N5/PPP1QPPP/R1B1K1NR w KQkq - 0 7
7.exf6!!!

http://www.chessgames.com/perl/chessgame?gid=1123803

Black may be able to get a draw if he played 12...d5 instead but after 13. Nxd5!! white has a very strong attack.
[d] r1bqk1r1/ppp2p1p/4p1pB/3N4/2B4P/8/PPP1NPP1/2KR3R b q - 0 13

[Spock]

My first instinct would certainly have been to save the queen.
Shredder 11 sees the sacrifice instantly though


12/26 0:01 -0.60 1.exf6 Nxe2 2.fxg7 Rg8 3.Ngxe2 Bf5 4.O-O Rxg7 5.Bg5 c6 6.Bb3 d5 7.Rfe1 Qb6 8.Be3 Qb4 9.a3 Qh4 10.g3 (3.532.118) 2904
13/31 0:03 -0.59 1.exf6 Nxe2 2.fxg7 Rg8 3.Bxe2 c6 4.Be3 Rxg7 5.O-O-O Rg8 6.Nf3 Bf5 7.Rhe1 d5 8.h3 h5 9.Kb1 b5 10.Nd4 Qd7 11.a3 (9.765.578) 2845
14/34 0:05 -0.66 1.exf6 Nxe2 2.fxg7 Rg8 3.Bxe2 c6 4.Be3 Rxg7 5.O-O-O d5 6.Nf3 Bg4 7.Kb1 Rg8 8.Ne4 h5 9.g3 b6 10.Bf4 (14.980.746) 2849
15/32 0:08 -0.68 1.exf6 Nxe2 2.fxg7 Rg8 3.Bxe2 c6 4.Be3 Rxg7 5.O-O-O d5 6.Nf3 Bg4 7.Kb1 Rg8 8.Ne4 h5 9.Rd4 Bxf3 10.Bxf3 (23.482.775) 2906
16/38 0:12 -0.67 1.exf6 Nxe2 2.fxg7 Rg8 3.Bxe2 c6 4.Be3 Rxg7 5.O-O-O d5 6.Nf3 Bg4 7.Kb1 Rg8 8.Ne4 h5 9.a3 Bxf3 10.Bxf3 (36.487.363) 2979
17/42 0:26 -0.65 1.exf6 Nxe2 2.fxg7 Rg8 3.Bxe2 c6 4.Be3 Rxg7 5.Nf3 d5 6.O-O-O Bg4 7.Kb1 Rg8 8.Ne4 h5 9.g3 b6 10.Rhe1 (75.831.638) 2905
18/38 0:48 -0.70 1.exf6 Nxe2 2.fxg7 Rg8 3.Bxe2 c6 4.Be3 Rxg7 5.Nf3 d5 6.O-O-O Bg4 7.Kb1 f6 8.Nd4 Bxe2 9.Ne6 Bxd1 10.Nxd8 Bxc2+ 11.Kxc2 Kxd8 12.Rd1 (143.783.401) 2980
19/44 1:34 -0.73 1.exf6 Nxe2 2.fxg7 Rg8 3.Bxe2 c6 4.Be3 Rxg7 5.Nf3 (285.431.617) 3034
20/47 4:44 -0.67 1.exf6 Nxe2 2.fxg7 Rg8 3.Ngxe2 c6 4.Bh6 d5 5.Bb3 e5 6.h4 Qb6 7.O-O Qc7 8.Rfe1 Be6 9.Ng3 f6 10.Nce4 Qe7 11.Nd2 O-O-O 12.c4 d4 (850.880.851) 2993
best move: e5xf6 time: 5:49.629 min n/s: 2.999.059 CPU 390.2% n/s(1CPU): 768.595 nodes: 1.048.510.211

[Sean Evans]

My first instinct would certainly have been to save the queen.
Shredder 11 sees the sacrifice instantly though

Hi, I get the same results as Ray, and as S11 notes, Black is leading! So the exchange down is in Blacks favour. However, an interesting position though, thank you for sharing it

[CThinker]

Crafty, Scorpio, Danasah, 'active' Thinker and 'inert' Thinker all pick e5f6. That seems to be the natural choice for any engine. But as usual, that 'passive' Thinker likes to be different and exiting, and so it picks c4f7!

[Cubeman]

The pocket versions of Hiarcs and Shredder also like 1.exf6.I think when you look at the alternatives only Bxf7+ and Qd2,Qd1, which when analysed leave White in a worse position.The final outcome is just N+N+B vs Q+P.Which in my opinion is about even.The engines I tested still think White is slightly worse considering Black has still got 2 central pawns.This would be an ideal position for testing many games from this position with a Monte-Carlo approch.

[Mike S.]

White immediatly - within six plies if we include 9...Rxg7 - gets three minor pieces for queen+pawn (and a HUGE developement advantage); the rest of the game is amusing. So this is not a queen sacrifice but a much smaller sacrifice (3*3=9, 9+1=10 by simple material counting). If so much material comes back "directly", then I don't think it makes sense to call it a queen sacrifice.

[swami]

Could somebody post the analysis of Rybka 3? I don't think it's a good idea to give up your queen in trade for three pieces. Besides white is gonna lose its pawn on g7 as well.

Also, It's difficult to get into attack mode with three of your pieces without queen. You don't often initiate the checkmate threat with those three minor pieces. So I'm with Ray on this one.

[pedrox]

DanaSah also play Bxf7+ in 57 s

Code: Select all

FEN: r1bqk2r/ppp1ppbp/3p1np1/4P3/2Bn4/2N5/PPP1QPPP/R1B1K1NR w KQkq - 0 7 

DanaSah v.3.97b FRC:
   1	00:00	          19	19	-4,89	exf6 Nxe2 fxg7
   1	00:00	          33	33	-4,64	Bxf7+ Kxf7
   1	00:00	          76	76	-2,60	Qd3 dxe5
   1	00:00	          98	98	-2,52	Qd1 dxe5
   1	00:00	         231	231	-1,60	Bb5+ Bd7
   2	00:00	       1.218	1.218	-2,81	Bb5+ Bd7 Qc4 dxe5
   2	00:00	       1.325	1.325	-2,60	Qd3 dxe5
   2	00:00	       1.420	1.420	-2,52	Qd1 dxe5
   3	00:00	       1.912	1.912	-2,21	Qd1 dxe5 Nf3
   4	00:00	       4.457	4.457	-1,36	exf6 Nxe2 fxg7 Rg8 Ngxe2 Rxg7
   5	00:00	       7.048	7.048	-1,36	exf6 Nxe2 fxg7 Rg8 Ngxe2 Rxg7
   6	00:00	      16.142	1.614.200	-1,36	exf6 Nxe2 fxg7 Rg8 Ngxe2 Rxg7
   7	00:00	      35.155	1.171.833	-0,73	exf6 Nxe2 fxg7 Rg8 Ngxe2 Rxg7 0-0
   8	00:00	      73.319	1.221.983	-1,08	exf6 Nxe2 fxg7 Rg8 Ngxe2 Rxg7 0-0 Kf8
   9	00:00	     153.380	1.022.533	-0,76	exf6 Nxe2 fxg7 Rg8 Ngxe2 Rxg7 0-0 Kf8 Be3
  10	00:00	     241.909	967.636	-0,57	exf6 Nxe2 fxg7 Rg8 Ngxe2 Rxg7 Bh6 Rg8 0-0 Bd7
  11	00:00	     349.588	1.028.200	-0,57	exf6 Nxe2 fxg7 Rg8 Ngxe2 Rxg7 Bh6 Rg8 0-0 Be6 Bxe6 fxe6
  12	00:00	     539.074	1.057.007	-0,52	exf6 Nxe2 fxg7 Rg8 Ngxe2 Rxg7 Bh6 Rg8 0-0 Bg4 Nd4 e5
  13	00:01	     895.893	1.066.539	-0,60	exf6 Nxe2 fxg7 Rg8 Ngxe2 Rxg7 0-0 Bd7 Bh6 Rg8 Nd4 c5 Nf3
  14	00:02	   2.353.629	1.041.428	-0,79	exf6 Nxe2 fxg7 Rg8 Ngxe2 Rxg7 Bh6 Rg8 0-0 e5 Ne4 g5 Rad1 Bd7
  15	00:03	   3.461.261	1.052.055	-0,87	exf6 Nxe2 fxg7 Rg8 Ngxe2 Rxg7 Bh6 Rg8 0-0 e5 Ne4 g5 Rfd1 Bd7 N2c3
  16	00:05	   5.616.766	953.610	-0,88	exf6 Nxe2 fxg7 Rg8 Ngxe2 Rxg7 Bh6 Rg8 Ne4 Bf5 N2c3 d5 Bxd5 c6 Bc4 Bg4
  16	00:57	  43.273.699	759.187	-0,65	Bxf7+ Kxf7 Qc4+ Ke8 Qxd4 Ng4 Nf3 Nxe5 Nxe5 Bxe5 Qa4+ Bd7 Qb3 b6 0-0 e6 Nb5 Bxb5 Qxb5+ Qd7 a4 Qxb5 axb5
  17	01:22	  63.346.456	772.517	-0,71	Bxf7+ Kxf7 Qc4+ Ne6 exf6 exf6 Nf3 Re8 0-0 Kg8 Be3 c6 Rad1 d5 Qh4 Bd7 Rfe1 Qc7 Re2 b5
  18	01:48	  83.142.383	769.836	-0,71	Bxf7+ Kxf7 Qc4+ Ne6 exf6 exf6 Nf3 Re8 0-0 Kg8 Be3 c6 Rad1 d5 Qb4 Qe7 Qa5 b5 Rfe1 f5 Bf4
  19	02:35	 121.395.743	783.198	-0,76	Bxf7+ Kxf7 Qc4+ Ne6 exf6 exf6 Nf3 Re8 0-0 Kg8 Be3 c6 Rfe1 Bd7 Qb3 Qe7 Rad1 d5 a4 b6 Bf4 f5

[Terry McCracken]

Could somebody post the analysis of Rybka 3? I don't think it's a good idea to give up your queen in trade for three pieces. Besides white is gonna lose its pawn on g7 as well.

Also, It's difficult to get into attack mode with three of your pieces without queen. You don't often initiate the checkmate threat with those three minor pieces. So I'm with Ray on this one.

It's opening theory and this type of trading is often seen in GM games.

[Jack Lad]

My first instinct would certainly have been to save the queen.
Shredder 11 sees the sacrifice instantly though

Hi, I get the same results as Ray, and as S11 notes, Black is leading! So the exchange down is in Blacks favour. However, an interesting position though, thank you for sharing it

White's position is winning although black may be able to get a draw in a few variations.