Evaluation: -1.5
[d]2kr2r1/p6p/2p2n2/2P2p2/P4B2/2P3P1/2n2P1P/1R3R1K b - - 0 5
[d]r6k/2p1b1pp/p2qb3/1p1pn3/6n1/2P1BN2/PPB2PPP/RQ2R1K1 w - - 0 2
[d]r6k/2p1b1pp/p2qb3/1p1p4/8/2P1N3/PPB2PPP/RQ4K1 b - - 0 5
Fascinating imbalance
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: Fascinating imbalance
[d]2b1k2b/1p2pp1p/p2p2p1/8/n3P3/1N1B1PPn/2P4P/4RRK1 w - - 0 24
[d]4k2r/1b2n1r1/pp2p3/2p3p1/N1P1P3/4B3/PP4PP/1B2N1K1 w - - 0 21
[d]4r1k1/1p3b1p/2pr2p1/p1N5/2PnPP2/PP4PP/1B4BK/1N6 w - - 0 36
[d]4k2r/1b2n1r1/pp2p3/2p3p1/N1P1P3/4B3/PP4PP/1B2N1K1 w - - 0 21
[d]4r1k1/1p3b1p/2pr2p1/p1N5/2PnPP2/PP4PP/1B4BK/1N6 w - - 0 36
-
Nordlandia
- Posts: 2821
- Joined: Fri Sep 25, 2015 9:38 pm
- Location: Sortland, Norway
Re: Fascinating imbalance
[pgn][Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[PlyCount "22"]
1. d4 c5 2. d5 d6 3. Nc3 g6 4. e4 Bg7 5. f4 e5 6. fxe5 dxe5 7. Nf3 Bg4 8. Be2
Ne7 9. O-O Nd7 10. Ng5 Bxe2 11. Nxf7 O-O *
[/pgn]
[d]r2q1rk1/pp1nnNbp/6p1/2pPp3/4P3/2N5/PPP1b1PP/R1BQ1RK1 w - - 0 12
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[PlyCount "22"]
1. d4 c5 2. d5 d6 3. Nc3 g6 4. e4 Bg7 5. f4 e5 6. fxe5 dxe5 7. Nf3 Bg4 8. Be2
Ne7 9. O-O Nd7 10. Ng5 Bxe2 11. Nxf7 O-O *
[/pgn]
[d]r2q1rk1/pp1nnNbp/6p1/2pPp3/4P3/2N5/PPP1b1PP/R1BQ1RK1 w - - 0 12
-
Nordlandia
- Posts: 2821
- Joined: Fri Sep 25, 2015 9:38 pm
- Location: Sortland, Norway
Re: Fascinating imbalance
[pgn][Event "20th Iraklio Open 2017"]
[Site "Athens"]
[Date "2017.06.20"]
[Round "4.4"]
[White "Korniotis, Filippos"]
[Black "Kotrotsos, Vasilios"]
[Result "*"]
[ECO "B06"]
[WhiteElo "2143"]
[BlackElo "2269"]
[Annotator "ChessBase"]
[PlyCount "58"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "GRE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]
1. d4 {150} g6 {60} 2. e4 {90} Bg7 {0} 3. Nc3 {30} d6 {0} 4. Be3 {30} a6 {0} 5.
h4 {30} h5 {0} 6. Qd2 {30} b5 {30} 7. Nh3 {30} Nd7 {90} 8. Be2 {150} Bb7 {150}
9. f3 {150} c5 {450} 10. a4 {150} b4 {90} 11. Na2 {30} Qa5 {150} 12. Nc1 {270}
Ngf6 {390} 13. O-O {210} cxd4 {450} 14. Bxd4 {90} e5 {150} 15. Be3 {330} d5 {30
} 16. Nb3 {1530} Qc7 {30} 17. Qxb4 {150} a5 {90} 18. Qa3 {30} Bf8 {570} 19. Qa2
{30} Bd6 {30} 20. Ng5 {420} O-O {90} 21. Bd3 {450} dxe4 {630} 22. fxe4 {30} Ng4
{30} 23. Rxf7 {510} Rxf7 {90} 24. Nd4 {150} Raf8 {870} 25. Nde6 {90} Nxe3 {630}
26. Nxc7 {30} Bxc7 {0} 27. Nxf7 {455} Rxf7 {0} 28. b4 {266} Bb6 {448} 29. bxa5
{30} Bc5 {167} *
[/pgn]
[d]6k1/1bbn1r2/6p1/p3p2p/PP2P2P/3Bn3/Q1P3P1/R5K1 b - - 0 28
[Site "Athens"]
[Date "2017.06.20"]
[Round "4.4"]
[White "Korniotis, Filippos"]
[Black "Kotrotsos, Vasilios"]
[Result "*"]
[ECO "B06"]
[WhiteElo "2143"]
[BlackElo "2269"]
[Annotator "ChessBase"]
[PlyCount "58"]
[EventDate "2017.??.??"]
[EventType "swiss"]
[EventCountry "GRE"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
[TimeControl "40/5400+30:1800+30"]
1. d4 {150} g6 {60} 2. e4 {90} Bg7 {0} 3. Nc3 {30} d6 {0} 4. Be3 {30} a6 {0} 5.
h4 {30} h5 {0} 6. Qd2 {30} b5 {30} 7. Nh3 {30} Nd7 {90} 8. Be2 {150} Bb7 {150}
9. f3 {150} c5 {450} 10. a4 {150} b4 {90} 11. Na2 {30} Qa5 {150} 12. Nc1 {270}
Ngf6 {390} 13. O-O {210} cxd4 {450} 14. Bxd4 {90} e5 {150} 15. Be3 {330} d5 {30
} 16. Nb3 {1530} Qc7 {30} 17. Qxb4 {150} a5 {90} 18. Qa3 {30} Bf8 {570} 19. Qa2
{30} Bd6 {30} 20. Ng5 {420} O-O {90} 21. Bd3 {450} dxe4 {630} 22. fxe4 {30} Ng4
{30} 23. Rxf7 {510} Rxf7 {90} 24. Nd4 {150} Raf8 {870} 25. Nde6 {90} Nxe3 {630}
26. Nxc7 {30} Bxc7 {0} 27. Nxf7 {455} Rxf7 {0} 28. b4 {266} Bb6 {448} 29. bxa5
{30} Bc5 {167} *
[/pgn]
[d]6k1/1bbn1r2/6p1/p3p2p/PP2P2P/3Bn3/Q1P3P1/R5K1 b - - 0 28
-
Nordlandia
- Posts: 2821
- Joined: Fri Sep 25, 2015 9:38 pm
- Location: Sortland, Norway
Re: Fascinating imbalance
*Latest Stockfish dev (build your own) -1.5
[d]7r/3k1pp1/B1p1pn1p/3q4/3r4/6BP/PP2QPP1/4R1K1 w - - 0 24
[pgn][Event "Paris GCT 2017 Rapid"]
[Site "Paris"]
[Date "2017.06.22"]
[Round "4"]
[White "Karjakin, Sergey"]
[Black "Caruana, Fabiano"]
[Result "1/2-1/2"]
[ECO "C07"]
[WhiteElo "2781"]
[BlackElo "2805"]
[SetUp "1"]
[FEN "2k4r/5pp1/B1p1pn1p/3q4/3r4/6BP/PP2QPP1/4R1K1 b - - 0 23"]
[PlyCount "46"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "FRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
23... Kd7 24. Rc1 Ke7 25. Bb7 Ne4 26. Bxc6 Nxg3 27. fxg3 Qxa2 28. Qe5 Rhd8 29.
Kh2 Kf8 30. Bf3 Qxb2 31. Rc7 Qb8 32. Qc5+ Kg8 33. Qe7 Rf8 34. Bh5 Qd8 35. Bxf7+
Kh8 36. Qxd8 Rdxd8 37. Bxe6 Rf2 38. g4 g6 39. Rc5 Re2 40. Bf7 Kg7 41. Bd5 Rd7
42. Bf3 Rb2 43. Rc6 Rbd2 44. Kg3 R2d6 45. Rc8 g5 46. Ra8 1/2-1/2[/pgn]
Brief lichess analysis - https://lichess.org/C3bEUk8M#46
[d]7r/3k1pp1/B1p1pn1p/3q4/3r4/6BP/PP2QPP1/4R1K1 w - - 0 24
[pgn][Event "Paris GCT 2017 Rapid"]
[Site "Paris"]
[Date "2017.06.22"]
[Round "4"]
[White "Karjakin, Sergey"]
[Black "Caruana, Fabiano"]
[Result "1/2-1/2"]
[ECO "C07"]
[WhiteElo "2781"]
[BlackElo "2805"]
[SetUp "1"]
[FEN "2k4r/5pp1/B1p1pn1p/3q4/3r4/6BP/PP2QPP1/4R1K1 b - - 0 23"]
[PlyCount "46"]
[EventDate "2017.??.??"]
[EventType "tourn"]
[EventCountry "FRA"]
[SourceTitle "playchess.com"]
[Source "ChessBase"]
[SourceQuality "1"]
23... Kd7 24. Rc1 Ke7 25. Bb7 Ne4 26. Bxc6 Nxg3 27. fxg3 Qxa2 28. Qe5 Rhd8 29.
Kh2 Kf8 30. Bf3 Qxb2 31. Rc7 Qb8 32. Qc5+ Kg8 33. Qe7 Rf8 34. Bh5 Qd8 35. Bxf7+
Kh8 36. Qxd8 Rdxd8 37. Bxe6 Rf2 38. g4 g6 39. Rc5 Re2 40. Bf7 Kg7 41. Bd5 Rd7
42. Bf3 Rb2 43. Rc6 Rbd2 44. Kg3 R2d6 45. Rc8 g5 46. Ra8 1/2-1/2[/pgn]
Brief lichess analysis - https://lichess.org/C3bEUk8M#46
-
Nordlandia
- Posts: 2821
- Joined: Fri Sep 25, 2015 9:38 pm
- Location: Sortland, Norway
Re: Fascinating imbalance
The motif of sacrificing material to obtain a pair of active bishops does not always have to be an attacking one. In the following game, Gligoric uses an exchange sacrifice to create complications that are not necessarily in his favour, but that offer practical defensive chances in an otherwise difficult position.
Gligoric suggested after the game that 19. h4! is stronger, when
he intended to play 19... h5 20. Nce4 Rxg5 21. Qxg5 Ne8 , offering
to play an exchange-down ending where his bishop pair give him some practical drawing chances.
«Many of the Classicists of the late nineteenth and early twentieth century claimed that two bishops versus rook and knight were equivalent. I don 't believe that this is the case, i.e., I think the extra material will usually win out, but this view continues to influence chess thinking to some extent even today» Steve Mayer - 1997.
[d]3rn1k1/3b1pb1/pp1p2p1/2pP3p/2P1N2P/5PN1/PP4P1/2KR3R w - - 0 23
[d]3rn1k1/3b1pbp/pp1p2p1/2pP4/2P1N3/5PN1/PP4PP/2KR3R w - - 0 22
[pgn][Event "Amsterdam"]
[Site "https://lichess.org/Fiqp4UJF"]
[Date "1970.07.18"]
[Round "5"]
[White "Vlastimil Hort (?)"]
[Black "Svetozar Gligoric (?)"]
[Result "0-1"]
[WhiteElo "?"]
[BlackElo "?"]
[Variant "Standard"]
[TimeControl "-"]
[ECO "E82"]
[Opening "King's Indian Defense: Saemisch Variation, Double Fianchetto"]
[Termination "Normal"]
[Annotator "lichess.org"]
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 b6 { E82 King's Indian Defense: Saemisch Variation, Double Fianchetto } 7. Bd3 a6 8. Nge2 c5 9. e5 Nfd7 10. exd6 exd6 11. Qd2 Nc6 12. Be4 Bb7 13. O-O-O Nf6 14. Bxc6 Bxc6 15. Bg5 Rc8?! { (0.17 → 1.00) Inaccuracy. Best move was Rb8. } (15... Rb8 16. Rhe1 Re8 17. d5 Bd7 18. Ng3 b5 19. Nge4 Rxe4 20. Nxe4 Nxe4 21. Rxe4 Qb6 22. cxb5) 16. d5 Bd7 17. Ng3 Re8?! { (0.31 → 1.22) Inaccuracy. Best move was Qc7. } (17... Qc7) 18. Qf4 Re5 19. Nce4?! { (0.99 → 0.00) Inaccuracy. Best move was h4. } (19. h4 b5 20. Nge4 Nh5 21. Bxd8 Nxf4 22. Bg5 Nxg2 23. Rdg1 b4 24. Rxg2 bxc3 25. Nxd6 Rb8) 19... Rxg5 20. Qxg5 b5 21. Nxd6 Rb8 22. Nge4 h6 23. Qe3 Nxe4 24. Nxe4?! { (0.00 → -0.52) Inaccuracy. Best move was fxe4. } (24. fxe4 Qe7 25. e5 Qxe5 26. Qxe5 Bxe5 27. Ne4 Bf5 28. Rde1 bxc4 29. Re2 Bf4+ 30. Kc2 Be5) 24... bxc4 25. Rd2?! { (-0.20 → -0.70) Inaccuracy. Best move was Nc3. } (25. Nc3 Bf5) 25... Qa5 26. Kb1 c3 27. Rc2 Bd4 28. Qe1?! { (-0.40 → -0.94) Inaccuracy. Best move was Qf4. } (28. Qf4 Qb4) 28... Qa3?! { (-0.94 → -0.08) Inaccuracy. Best move was Ba4. } (28... Ba4 29. Nxc3) 29. Nxc3 Bf5 30. Ka1 Rxb2 31. Rxb2 Bxc3 32. Qc1 c4 33. d6 Bf6 34. Rd1 c3 35. Rc2 Qa4 36. d7 Bxd7 37. g4 Be6 38. Re1?? { (0.00 → -3.02) Blunder. Best move was Qb1. } (38. Qb1 Bc4 39. Rd6 Be5 40. Rd8+ Kh7 41. h4 Qc6 42. Qd1 Qa4 43. Qb1) 38... Bb3? { (-3.02 → -1.00) Mistake. Best move was Bxa2. } (38... Bxa2 39. Qd1 Bc4+ 40. Kb1 Qb5+ 41. Ka1 Bd3 42. Re4 Kg7 43. h4 Bxh4 44. Qb1 Qd5 45. Ra4) 39. Ree2? { (-1.00 → -3.38) Mistake. Best move was Kb1. } (39. Kb1 Bxc2+ 40. Qxc2 Qb4+ 41. Ka1 Qf4 42. Kb1 Qxf3 43. Qe4 Qf2 44. Re2 Qb6+ 45. Kc2 Kh7) 39... Bxa2 40. Qxh6?? { (-2.81 → -57.28) Blunder. Best move was Re8+. } (40. Re8+) 40... Bc4+ 41. Kb1 Bxe2 { White resigns. } 0-1[/pgn]
Verdict: The sacrifice for active bishops is difficult to study in a
systematic manner. However, a pair of active bishops is frequently
adequate compensation for a pawn - or even the exchange - in a middlegame position.
Gligoric suggested after the game that 19. h4! is stronger, when
he intended to play 19... h5 20. Nce4 Rxg5 21. Qxg5 Ne8 , offering
to play an exchange-down ending where his bishop pair give him some practical drawing chances.
«Many of the Classicists of the late nineteenth and early twentieth century claimed that two bishops versus rook and knight were equivalent. I don 't believe that this is the case, i.e., I think the extra material will usually win out, but this view continues to influence chess thinking to some extent even today» Steve Mayer - 1997.
[d]3rn1k1/3b1pb1/pp1p2p1/2pP3p/2P1N2P/5PN1/PP4P1/2KR3R w - - 0 23
[d]3rn1k1/3b1pbp/pp1p2p1/2pP4/2P1N3/5PN1/PP4PP/2KR3R w - - 0 22
[pgn][Event "Amsterdam"]
[Site "https://lichess.org/Fiqp4UJF"]
[Date "1970.07.18"]
[Round "5"]
[White "Vlastimil Hort (?)"]
[Black "Svetozar Gligoric (?)"]
[Result "0-1"]
[WhiteElo "?"]
[BlackElo "?"]
[Variant "Standard"]
[TimeControl "-"]
[ECO "E82"]
[Opening "King's Indian Defense: Saemisch Variation, Double Fianchetto"]
[Termination "Normal"]
[Annotator "lichess.org"]
1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. f3 O-O 6. Be3 b6 { E82 King's Indian Defense: Saemisch Variation, Double Fianchetto } 7. Bd3 a6 8. Nge2 c5 9. e5 Nfd7 10. exd6 exd6 11. Qd2 Nc6 12. Be4 Bb7 13. O-O-O Nf6 14. Bxc6 Bxc6 15. Bg5 Rc8?! { (0.17 → 1.00) Inaccuracy. Best move was Rb8. } (15... Rb8 16. Rhe1 Re8 17. d5 Bd7 18. Ng3 b5 19. Nge4 Rxe4 20. Nxe4 Nxe4 21. Rxe4 Qb6 22. cxb5) 16. d5 Bd7 17. Ng3 Re8?! { (0.31 → 1.22) Inaccuracy. Best move was Qc7. } (17... Qc7) 18. Qf4 Re5 19. Nce4?! { (0.99 → 0.00) Inaccuracy. Best move was h4. } (19. h4 b5 20. Nge4 Nh5 21. Bxd8 Nxf4 22. Bg5 Nxg2 23. Rdg1 b4 24. Rxg2 bxc3 25. Nxd6 Rb8) 19... Rxg5 20. Qxg5 b5 21. Nxd6 Rb8 22. Nge4 h6 23. Qe3 Nxe4 24. Nxe4?! { (0.00 → -0.52) Inaccuracy. Best move was fxe4. } (24. fxe4 Qe7 25. e5 Qxe5 26. Qxe5 Bxe5 27. Ne4 Bf5 28. Rde1 bxc4 29. Re2 Bf4+ 30. Kc2 Be5) 24... bxc4 25. Rd2?! { (-0.20 → -0.70) Inaccuracy. Best move was Nc3. } (25. Nc3 Bf5) 25... Qa5 26. Kb1 c3 27. Rc2 Bd4 28. Qe1?! { (-0.40 → -0.94) Inaccuracy. Best move was Qf4. } (28. Qf4 Qb4) 28... Qa3?! { (-0.94 → -0.08) Inaccuracy. Best move was Ba4. } (28... Ba4 29. Nxc3) 29. Nxc3 Bf5 30. Ka1 Rxb2 31. Rxb2 Bxc3 32. Qc1 c4 33. d6 Bf6 34. Rd1 c3 35. Rc2 Qa4 36. d7 Bxd7 37. g4 Be6 38. Re1?? { (0.00 → -3.02) Blunder. Best move was Qb1. } (38. Qb1 Bc4 39. Rd6 Be5 40. Rd8+ Kh7 41. h4 Qc6 42. Qd1 Qa4 43. Qb1) 38... Bb3? { (-3.02 → -1.00) Mistake. Best move was Bxa2. } (38... Bxa2 39. Qd1 Bc4+ 40. Kb1 Qb5+ 41. Ka1 Bd3 42. Re4 Kg7 43. h4 Bxh4 44. Qb1 Qd5 45. Ra4) 39. Ree2? { (-1.00 → -3.38) Mistake. Best move was Kb1. } (39. Kb1 Bxc2+ 40. Qxc2 Qb4+ 41. Ka1 Qf4 42. Kb1 Qxf3 43. Qe4 Qf2 44. Re2 Qb6+ 45. Kc2 Kh7) 39... Bxa2 40. Qxh6?? { (-2.81 → -57.28) Blunder. Best move was Re8+. } (40. Re8+) 40... Bc4+ 41. Kb1 Bxe2 { White resigns. } 0-1[/pgn]
Verdict: The sacrifice for active bishops is difficult to study in a
systematic manner. However, a pair of active bishops is frequently
adequate compensation for a pawn - or even the exchange - in a middlegame position.
-
Nordlandia
- Posts: 2821
- Joined: Fri Sep 25, 2015 9:38 pm
- Location: Sortland, Norway
Re: Fascinating imbalance
[d]4bk2/pp3p1p/5bp1/8/8/4P3/PP2NPPP/3N2K1 b - - 0 21
[d]4b3/pp3p1p/3k1bp1/8/8/4P3/PP2NPPP/3N3K w - - 0 21
-
Nordlandia
- Posts: 2821
- Joined: Fri Sep 25, 2015 9:38 pm
- Location: Sortland, Norway
Re: Fascinating imbalance
White is probably winning - +1.5
[d]3rr1k1/5pb1/1p4pp/p1p1p3/Pn6/3PB1P1/1P2PPKP/3Q1R2 w - - 0 1
White is better ± | +1.15
[d]3rr1k1/5pb1/1p4pp/p1p1p3/Pn6/3P2P1/1P2PPBP/3Q1RK1 w - - 0 1
Even position: White and Black have more or less equal chances.
[d]5r2/pb3ppk/1pn1p2p/3rP3/5Q2/5N2/P4PPP/R5K1 w - - 0 20
Position is roughly in balance
[d]r5k1/p2p2pp/1pb1p3/4b3/2P1P3/P2B4/1P5P/1K1R1R2 w - - 0 25
https://lichess.org/CRNUS1lA#38
https://lichess.org/kTW7PwAF#48
[d]3rr1k1/5pb1/1p4pp/p1p1p3/Pn6/3PB1P1/1P2PPKP/3Q1R2 w - - 0 1
White is better ± | +1.15
[d]3rr1k1/5pb1/1p4pp/p1p1p3/Pn6/3P2P1/1P2PPBP/3Q1RK1 w - - 0 1
Even position: White and Black have more or less equal chances.
[d]5r2/pb3ppk/1pn1p2p/3rP3/5Q2/5N2/P4PPP/R5K1 w - - 0 20
Position is roughly in balance
[d]r5k1/p2p2pp/1pb1p3/4b3/2P1P3/P2B4/1P5P/1K1R1R2 w - - 0 25
https://lichess.org/CRNUS1lA#38
https://lichess.org/kTW7PwAF#48
-
Nordlandia
- Posts: 2821
- Joined: Fri Sep 25, 2015 9:38 pm
- Location: Sortland, Norway
Re: Fascinating imbalance
[pgn][Event "Clichy"]
[Site "https://lichess.org/0bFbWBq5"]
[Date "1993.??.??"]
[Round "8"]
[White "Marc Santo-Roman (2435)"]
[Black "Mikhail Gurevich (2614)"]
[Result "0-1"]
[WhiteElo "?"]
[BlackElo "?"]
[Variant "Standard"]
[TimeControl "-"]
[ECO "B07"]
[Opening "Pirc Defense: Byrne Variation"]
[Termination "Normal"]
[Annotator "lichess.org"]
1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bg5 { B07 Pirc Defense: Byrne Variation } c6 5. Qd2 Bg7 6. Nf3 O-O 7. h3 Nbd7 8. e5 dxe5 9. dxe5 Nd5 10. Nxd5 cxd5 11. Bh6 Nxe5 12. Nxe5 Bxe5 13. Bxf8 Kxf8 14. c3 Qc7 15. Be2 Bd7 16. O-O Bc6 17. f4 Bf6 18. Rad1 Kg7 19. Bf3 e6 20. g3 Qa5 21. a3 Ba4 22. Rc1 d4 23. Kh2 dxc3 24. bxc3 Rd8 25. Qb2 b6 26. Qb4 Rd2+ 27. Kh1 Qa6 28. c4 Rd3 29. Kh2 Be8 30. c5 bxc5 31. Rxc5 Rxf3 { White resigns. } 0-1[/pgn]
[d]r1bq1k2/pp2pp1p/6p1/3pb3/8/7P/PPPQ1PP1/R3KB1R w KQ - 0 14
Fabricated position.
[d]r1bq1k2/pp2pp1p/6p1/3pb3/8/7P/PPPQ1PP1/R3KN1R w KQ - 0 14
https://lichess.org/0bFbWBq5#26
---------------
...Rxf5 looks good for black.
[d]r1b2r1k/1ppq2bp/n2p4/p1nPpNBB/2P1Pp2/2N4P/PP3P2/R2QK1R1 b Q - 0 1
[Site "https://lichess.org/0bFbWBq5"]
[Date "1993.??.??"]
[Round "8"]
[White "Marc Santo-Roman (2435)"]
[Black "Mikhail Gurevich (2614)"]
[Result "0-1"]
[WhiteElo "?"]
[BlackElo "?"]
[Variant "Standard"]
[TimeControl "-"]
[ECO "B07"]
[Opening "Pirc Defense: Byrne Variation"]
[Termination "Normal"]
[Annotator "lichess.org"]
1. e4 d6 2. d4 Nf6 3. Nc3 g6 4. Bg5 { B07 Pirc Defense: Byrne Variation } c6 5. Qd2 Bg7 6. Nf3 O-O 7. h3 Nbd7 8. e5 dxe5 9. dxe5 Nd5 10. Nxd5 cxd5 11. Bh6 Nxe5 12. Nxe5 Bxe5 13. Bxf8 Kxf8 14. c3 Qc7 15. Be2 Bd7 16. O-O Bc6 17. f4 Bf6 18. Rad1 Kg7 19. Bf3 e6 20. g3 Qa5 21. a3 Ba4 22. Rc1 d4 23. Kh2 dxc3 24. bxc3 Rd8 25. Qb2 b6 26. Qb4 Rd2+ 27. Kh1 Qa6 28. c4 Rd3 29. Kh2 Be8 30. c5 bxc5 31. Rxc5 Rxf3 { White resigns. } 0-1[/pgn]
[d]r1bq1k2/pp2pp1p/6p1/3pb3/8/7P/PPPQ1PP1/R3KB1R w KQ - 0 14
Fabricated position.
[d]r1bq1k2/pp2pp1p/6p1/3pb3/8/7P/PPPQ1PP1/R3KN1R w KQ - 0 14
https://lichess.org/0bFbWBq5#26
---------------
...Rxf5 looks good for black.
[d]r1b2r1k/1ppq2bp/n2p4/p1nPpNBB/2P1Pp2/2N4P/PP3P2/R2QK1R1 b Q - 0 1
-
Nordlandia
- Posts: 2821
- Joined: Fri Sep 25, 2015 9:38 pm
- Location: Sortland, Norway
Re: Fascinating imbalance
[pgn][Event "St Petersburg Open"]
[Site "St. Petersburg RUS"]
[Date "1993.??.??"]
[Round "?"]
[White "Grigory Serper"]
[Black "Ioannis Nikolaidis"]
[Result "1-0"]
[ECO "E70"]
[SetUp "1"]
[FEN "r1b1kn1r/2q2pb1/p1p3p1/1pP1p2n/P3P2p/2N1BP2/1P1QBNPP/R4RK1 b kq - 0 16"]
[PlyCount "64"]
[EventDate "1993.??.??"]
16... b4 17. Nd5 cxd5 18. exd5 f5 19. d6 Qc6 20. Bb5 axb5 21. axb5 Qxb5 22.
Rxa8 Qc6 23. Rfa1 f4 24. R1a7 Nd7 25. Rxc8+ Qxc8 26. Qd5 fxe3 27. Qe6+ Kf8 28.
Rxd7 exf2+ 29. Kf1 Qe8 30. Rf7+ Qxf7 31. Qc8+ Qe8 32. d7 Kf7 33. dxe8=Q+ Rxe8
34. Qb7+ Re7 35. c6 e4 36. c7 e3 37. Qd5+ Kf6 38. Qd6+ Kf7 39. Qd5+ Kf6 40.
Qd6+ Kf7 41. Qxe7+ Kxe7 42. c8=Q Bh6 43. Qc5+ Ke8 44. Qb5+ Kd8 45. Qb6+ Kd7 46.
Qxg6 e2+ 47. Kxf2 Be3+ 48. Ke1 1-0
[/pgn]
White's compensation for the piece is obvious. Even if Black's
pieces were on good squares and his king safe, it would be difficult
to prevent the united passed pawns from rampaging down the
board. But as it is, with Black's rook sitting uselessly on the
wings, his minor pieces disorganised, and his king stuck in the centre, only one verdict is possible: White has a winning advantage.
[d]r1b1kn1r/2q2pb1/p5p1/2PPp2n/Pp5p/4BP2/1P1QBNPP/R4RK1 b kq - 0 18
https://lichess.org/FveoG3pn#35
[Site "St. Petersburg RUS"]
[Date "1993.??.??"]
[Round "?"]
[White "Grigory Serper"]
[Black "Ioannis Nikolaidis"]
[Result "1-0"]
[ECO "E70"]
[SetUp "1"]
[FEN "r1b1kn1r/2q2pb1/p1p3p1/1pP1p2n/P3P2p/2N1BP2/1P1QBNPP/R4RK1 b kq - 0 16"]
[PlyCount "64"]
[EventDate "1993.??.??"]
16... b4 17. Nd5 cxd5 18. exd5 f5 19. d6 Qc6 20. Bb5 axb5 21. axb5 Qxb5 22.
Rxa8 Qc6 23. Rfa1 f4 24. R1a7 Nd7 25. Rxc8+ Qxc8 26. Qd5 fxe3 27. Qe6+ Kf8 28.
Rxd7 exf2+ 29. Kf1 Qe8 30. Rf7+ Qxf7 31. Qc8+ Qe8 32. d7 Kf7 33. dxe8=Q+ Rxe8
34. Qb7+ Re7 35. c6 e4 36. c7 e3 37. Qd5+ Kf6 38. Qd6+ Kf7 39. Qd5+ Kf6 40.
Qd6+ Kf7 41. Qxe7+ Kxe7 42. c8=Q Bh6 43. Qc5+ Ke8 44. Qb5+ Kd8 45. Qb6+ Kd7 46.
Qxg6 e2+ 47. Kxf2 Be3+ 48. Ke1 1-0
[/pgn]
White's compensation for the piece is obvious. Even if Black's
pieces were on good squares and his king safe, it would be difficult
to prevent the united passed pawns from rampaging down the
board. But as it is, with Black's rook sitting uselessly on the
wings, his minor pieces disorganised, and his king stuck in the centre, only one verdict is possible: White has a winning advantage.
[d]r1b1kn1r/2q2pb1/p5p1/2PPp2n/Pp5p/4BP2/1P1QBNPP/R4RK1 b kq - 0 18
https://lichess.org/FveoG3pn#35