Often rook rook bishop vs rook knight bishop (opposite-colored) possesses larger than usual drawing chances. The knight is tricky and bishop can't threaten each other.
...b6 is very interesting move and look very drawish with accurate play.
[d]r6r/pp1kpp1p/4bnp1/2p5/2P5/2P3P1/P3PPBP/1RB1K2R b K - 0 12
Engine exchange sacrifice
Moderators: hgm, Rebel, chrisw
-
Nordlandia
- Posts: 2821
- Joined: Fri Sep 25, 2015 9:38 pm
- Location: Sortland, Norway
-
Nordlandia
- Posts: 2821
- Joined: Fri Sep 25, 2015 9:38 pm
- Location: Sortland, Norway
Re: Engine exchange sacrifice
White is nominally the exchange and pawn up, but in comparison with Black's hugely influential bishop on e5, White's feeble pieces on g2 cannot be ranked much above a churchwarden.
[d]2r3k1/1pq2p2/2n3p1/p3b1p1/2P1P1P1/1P2p3/P3P1BP/R3QRK1 w - - 0 23
[pgn][Event "BCF-chT 0304 (4NCL)"]
[Site "West Bromwich"]
[Date "2004.05.02"]
[Round "8.3"]
[White "Turner, Matthew"]
[Black "Trent, Lawrence"]
[Result "0-1"]
[ECO "E60"]
[WhiteElo "2506"]
[BlackElo "2373"]
[PlyCount "60"]
[EventDate "2003.10.18"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "ENG"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]
[WhiteTeam "Wood Green"]
[BlackTeam "Barbican"]
[WhiteTeamCountry "ENG"]
[BlackTeamCountry "ENG"]
1. g3 g6 2. Nf3 Bg7 3. Bg2 Nf6 4. c4 O-O 5. O-O d6 6. d4 Nc6 7. Na3 e5 8. dxe5
dxe5 9. Nb5 Qe7 10. b3 Rd8 11. Qe1 a5 12. Bb2 e4 13. Ng5 Bf5 14. f3 e3 15. g4
Bc8 16. Qg3 h6 17. Nxc7 hxg5 18. Nxa8 Ne4 19. fxe4 Bxb2 20. Nb6 Be5 21. Nxc8
Rxc8 22. Qe1 Qc7 23. Rd1 Bxh2+ 24. Kh1 Ne5 25. Rd5 Nxg4 26. e5 Bxe5 27. Qxa5 b6
28. Qb5 Bc3 29. Re5 Qxe5 30. Qxe5 Bxe5 0-1
[/pgn]
[d]2r3k1/1pq2p2/2n3p1/p3b1p1/2P1P1P1/1P2p3/P3P1BP/R3QRK1 w - - 0 23
[pgn][Event "BCF-chT 0304 (4NCL)"]
[Site "West Bromwich"]
[Date "2004.05.02"]
[Round "8.3"]
[White "Turner, Matthew"]
[Black "Trent, Lawrence"]
[Result "0-1"]
[ECO "E60"]
[WhiteElo "2506"]
[BlackElo "2373"]
[PlyCount "60"]
[EventDate "2003.10.18"]
[EventType "team"]
[EventRounds "11"]
[EventCountry "ENG"]
[SourceTitle "EXT 2005"]
[Source "ChessBase"]
[SourceDate "2004.11.15"]
[SourceVersion "1"]
[SourceVersionDate "2004.11.15"]
[SourceQuality "1"]
[WhiteTeam "Wood Green"]
[BlackTeam "Barbican"]
[WhiteTeamCountry "ENG"]
[BlackTeamCountry "ENG"]
1. g3 g6 2. Nf3 Bg7 3. Bg2 Nf6 4. c4 O-O 5. O-O d6 6. d4 Nc6 7. Na3 e5 8. dxe5
dxe5 9. Nb5 Qe7 10. b3 Rd8 11. Qe1 a5 12. Bb2 e4 13. Ng5 Bf5 14. f3 e3 15. g4
Bc8 16. Qg3 h6 17. Nxc7 hxg5 18. Nxa8 Ne4 19. fxe4 Bxb2 20. Nb6 Be5 21. Nxc8
Rxc8 22. Qe1 Qc7 23. Rd1 Bxh2+ 24. Kh1 Ne5 25. Rd5 Nxg4 26. e5 Bxe5 27. Qxa5 b6
28. Qb5 Bc3 29. Re5 Qxe5 30. Qxe5 Bxe5 0-1
[/pgn]
-
MikeGL
- Posts: 1010
- Joined: Thu Sep 01, 2011 2:49 pm
Re: Engine exchange sacrifice
Shirov did it twice in a single game. Getting a B pair vs. 2 Rooks of white.
But due to broken K-side of white and K safety issues, Shirov won.
[pgn]
[Event "Manila Interzonal"]
[Site "Manila PHI"]
[Date "1990.07.11"]
[EventDate "1990.06.29"]
[Round "11"]
[Result "0-1"]
[White "Joel Lautier"]
[Black "Alexey Shirov"]
[ECO "E63"]
[PlyCount "64"]
1.d4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d6 6.c4 Nc6 7.Nc3
a6 8.h3 Bd7 9.Bg5 h6 10.Be3 Rb8 11.Nd5 b5 12.Nxf6+ exf6
13.cxb5 Rxb5 14.Qd2 g5 15.d5 Ne7 16.Nd4 Rxd5 17.Bxd5 Nxd5
18.Nf5 Bxf5 19.Qxd5 Bxh3 20.Rfd1 Re8 21.Rac1 f5 22.Rd2 Rxe3
23.fxe3 Qe7 24.Kf2 Be5 25.Rh1 Bxg3+ 26.Kxg3 Qxe3+ 27.Qf3 Qxd2
28.Qa8+ Kg7 29.Kxh3 Qxe2 30.Qd5 Kg6 31.Qd4 f4 32.Rg1 f5 0-1
[/pgn]
I tried to analyze the game, but even if engine moves are followed, the
advantage of 2R of white seems to disappear. Probably due to very few
open files and the B pair is more active than than rooks.
But due to broken K-side of white and K safety issues, Shirov won.
[pgn]
[Event "Manila Interzonal"]
[Site "Manila PHI"]
[Date "1990.07.11"]
[EventDate "1990.06.29"]
[Round "11"]
[Result "0-1"]
[White "Joel Lautier"]
[Black "Alexey Shirov"]
[ECO "E63"]
[PlyCount "64"]
1.d4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2 O-O 5.O-O d6 6.c4 Nc6 7.Nc3
a6 8.h3 Bd7 9.Bg5 h6 10.Be3 Rb8 11.Nd5 b5 12.Nxf6+ exf6
13.cxb5 Rxb5 14.Qd2 g5 15.d5 Ne7 16.Nd4 Rxd5 17.Bxd5 Nxd5
18.Nf5 Bxf5 19.Qxd5 Bxh3 20.Rfd1 Re8 21.Rac1 f5 22.Rd2 Rxe3
23.fxe3 Qe7 24.Kf2 Be5 25.Rh1 Bxg3+ 26.Kxg3 Qxe3+ 27.Qf3 Qxd2
28.Qa8+ Kg7 29.Kxh3 Qxe2 30.Qd5 Kg6 31.Qd4 f4 32.Rg1 f5 0-1
[/pgn]
I tried to analyze the game, but even if engine moves are followed, the
advantage of 2R of white seems to disappear. Probably due to very few
open files and the B pair is more active than than rooks.