What Say You?

[AdminX]

Fen: r4kr1/1bq1bp2/p2pp3/Pp2n1pn/3NP2p/2NBBP1P/1PPQ2P1/R1R3K1 w - - 0 20
White to Move.

Position is from a game between Fritz Neuronal and ClassicAra. Here, Fritz played Ncxb5. Do you think the move was good, bad, overconfident, or was a mistake played later in the game that lead to lost for white.

[pgn]
[Event "ClassicAra 0.9.9-Fritz 18 Neuronal match"]
[Site "?"]
[Date "2022.06.01"]
[Round "2"]
[White "Fritz 18 Neuronal"]
[Black "ClassicAra 0.9.9"]
[Result "0-1"]
[ECO "B90"]
[PlyCount "98"]
[EventDate "2022.06.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 $6 {0.81/33
Dragon 3:} (6... e5 {0.28/34 Dragon 3:} 7. Nb3 Be6 8. f3 h5 9. Nd5 Bxd5 10.
exd5 Nbd7 11. Qd2 g6 12. O-O-O Nb6 13. Kb1 Nbxd5 14. Bg5 Be7 15. Bd3 Rc8 16.
Rhe1 O-O 17. h3 Qc7 18. g4 Rfe8 19. gxh5 Nxh5 20. Bxg6 Nc3+ 21. Qxc3 Qxc3 22.
bxc3 fxg6 23. Bxe7 Rxe7 24. Rxd6 Nf4 25. Kb2 Kg7 26. Rb6) 7. Qf3 $6 {0.21/24 0
0.21/24 0 Dragon 3: +0.05/31} ({Theory prefers} 7. f3 $1) (7. a3 {0.81/33
Dragon 3:} Be7 8. f3 O-O 9. Qd2 d5 10. e5 Nfd7 11. f4 Nc6 12. Bd3 Nc5 13. Be2
Nd7 14. Bf3 Qc7 15. O-O Nxd4 16. Bxd4 f6 17. exf6 Bxf6 18. Ne2 Nb6 19. b3 Bxd4+
20. Qxd4 Bd7 21. Rac1 Rae8 22. a4 Bc6 23. Bh5 g6 24. Bf3 Nc8 25. c4 dxc4) 7...
h5 $6 {-0.33/37 0 -0.33/37 0 Dragon 3: +0.58/33} ({Relevant:} 7... Nbd7 8.
O-O-O h5 9. Kb1 Qc7 10. Qg3 h4 11. Qh3 b5 12. a3 Rb8 13. g4 b4 14. axb4 Rxb4
15. Na2 Rb8 16. f3 Nc5 17. g5 e5 18. Nf5 g6 19. gxf6 gxf5 20. exf5 Rh5 21. Qg4
Rxf5 22. Qxh4 Rxf3 23. Bc1 Bf5 24. Bc4 Ne6 25. Bd3 Bxd3 26. Rxd3 Rxd3 27. cxd3
Nd4 28. Qf2 Qb7 29. Re1 Kd7 30. Be3 Qf3 31. Qd2 Nc6 32. Rc1 d5 33. Qc2 d4 34.
Qc4 Qxf6 35. Bg5 Qe6 36. Qxa6 f6 37. Bd2 {Pruijssers,R (2550)-Van Wely,L (2615)
Netherlands 2019 0-1}) ({Theory prefers} 7... Nbd7 $1) (7... Nbd7 {0.05/31
Dragon 3:} 8. a4 Be7 9. Be2 h5 10. Qg3 Ne5 11. O-O-O Nfg4 12. h4 Nxe3 13. Qxe3
Nc6 14. f4 Bd7 15. Kb1 Rc8 16. Nb3 Qc7 17. g4 hxg4 18. Bxg4 Bf6 19. h5 Nb4 20.
h6 Rxh6 21. Rxh6 gxh6 22. f5 Bg5 23. Qf2 exf5 24. exf5) 8. h3 {0.19/26 0 0.19/
26 0} Qc7 $6 {-0.26/38 0 -0.26/38 0 Dragon 3: +0.80/35} (8... Bd7 {0.38/33
Dragon 3:} 9. a3 Nc6 10. Bd3 Ng4 11. Nxc6 Bxc6 12. Bd4 Ne5 13. Qe2 Nxd3+ 14.
Qxd3 Qg5 15. O-O Be7 16. f4 Qh6 17. Rf3 O-O 18. Raf1 h4 19. f5 exf5 20. Rxf5
Bd7 21. Nd5 Rae8 22. R5f3 Bg5 23. Be3 Bc6 24. Bxg5 Qxg5 25. Rf5 Qg3 26. Qd2
Bxd5) 9. a4 $1 {0.27/27 0 0.27/27 0} b6 $6 {-0.28/51 0 -0.28/51 0 Dragon 3: +0.
86/35} (9... Nc6 {0.56/34 Dragon 3:} 10. Nxc6 bxc6 11. Bd3 Nd7 12. O-O Ne5 13.
Qd1 Nxd3 14. cxd3 Rb8 15. a5 c5 16. d4 Rxb2 17. Qa4+ Bd7 18. Qc4 Be7 19. Qxa6
O-O 20. Rfc1 Rfb8 21. Qd3 Ra8 22. a6 Rb6 23. Qe2 c4 24. a7 Rxa7 25. Rxa7 Qxa7
26. d5 Qa3 27. Qxc4 Rb7 28. dxe6 Bxe6 29. Nd5 Qa5) 10. Bd3 {0.17/27 0 0.17/27
0 [#]} Be7 $6 {0.00/25 0 0.00/25 0 Dragon 3: +1.02/33} ({Predecessor:} 10...
Nbd7 11. O-O Bb7 12. Qe2 Be7 13. Nb3 O-O 14. Bg5 Ne5 15. f4 Nxd3 16. cxd3 Rfc8
17. Qe3 Qd7 18. Nd4 Rc7 19. Qf2 Rcc8 20. Qh4 Bd8 21. Rf3 b5 22. Rg3 Ne8 23.
Bxd8 Qxd8 24. Qxh5 Qf6 25. Nce2 bxa4 26. f5 Rc5 27. Rf1 Bc8 28. Nf3 exf5 29.
Nf4 fxe4 30. Nd5 Rxd5 31. Qxd5 Ra7 32. Qc6 Qd8 33. Qxe4 Re7 34. Qxa4 Qb6+ 35.
Kh2 Qxb2 36. Ng5 Qb5 37. Qf4 f6 38. Ne4 Qe5 39. Nxf6+ Nxf6 40. Qxe5 {Kharlamov,
V (2491)-Yurov,A (2414) ICCF email 2013 1-0}) (10... Nbd7 {0.56/34 Dragon 3:}
11. O-O Bb7 12. Qe2 g6 13. Nb3 Bg7 14. f4 O-O 15. Rae1 Rfe8 16. Qf2 Nc5 17. Bd4
Rac8 18. Re2 Qe7 19. Nd2 Nxd3 20. cxd3 b5 21. e5 Nd7 22. axb5 axb5 23. Nxb5
dxe5 24. fxe5 Ba6 25. Nd6 Bxd3 26. Qe3 Bxe2 27. Rxf7 Rc1+ 28. Kh2 Qd8 29. Qxe2
Rf8) 11. Qg3 $6 {0.18/27 0 0.18/27 0 Dragon 3: +0.51/37} (11. g4 {1.02/33
Dragon 3:} g6 12. O-O-O Nbd7 13. Kb1 Ne5 14. Qg2 b5 15. axb5 axb5 16. Bxb5+ Bd7
17. f4 Nc4 18. Bxc4 Qxc4 19. g5 Nh7 20. Qe2 Qb4 21. f5 O-O 22. Rhf1 Rfc8 23.
Nb3 Be8 24. fxe6 fxe6 25. h4 Nf8 26. Qd3 Nd7 27. Nd5 exd5 28. Qxd5+ Kh7 29.
Rf7+ Bxf7 30. Qxf7+ Kh8) 11... Bb7 {-0.07/26 0 -0.07/26 0} 12. O-O $6 {0.15/27
0 0.15/27 0 Dragon 3: +0.27/35} (12. f4 {0.58/35 Dragon 3:} h4 13. Qf3 g6 14.
Qf2 Nbd7 15. Nf3 Nc5 16. Bd4 Rf8 17. O-O Ncxe4 18. Bxe4 Nxe4 19. Nxe4 Bxe4 20.
Nd2 Bf5 21. Ra3 Rc8 22. c4 Rg8 23. Bxb6 Qb7 24. a5 g5 25. fxg5 Bxg5 26. Rf3
Bxd2 27. Qxd2 Be4 28. R3f2 Rg6 29. g4 hxg3 30. Rxf7 Qxf7 31. Rxf7 Kxf7 32. Qf4+
Bf5) 12... Nbd7 {0.20/50 0 0.20/50 0} 13. Rfe1 $6 {0.10/26 0 0.10/26 0 Dragon
3: +0.20/35} (13. f4 {0.59/31 Dragon 3:} h4 14. Qe1 Nh5 15. Rd1 Rc8 16. f5 e5
17. Nb3 Ndf6 18. Nd2 Ng3 19. Nc4 Nxf1 20. Bxf1 Nd7 21. Qf2 Nf6 22. Nxb6 Nxe4
23. Nxe4 Bxe4 24. c3 Rb8 25. Bxa6 O-O 26. Bb5 Rfd8 27. c4 d5 28. Nxd5 Bxd5 29.
cxd5) 13... h4 $1 {-0.07/58 0 -0.07/58 0} 14. Qf3 $1 {0.11/29 0 0.11/29 0} Rg8
$6 {0.02/56 0 0.02/56 0 Dragon 3: +0.68/36} (14... Nc5 {0.30/32 Dragon 3:} 15.
Nb3 Nfd7 16. Qd1 O-O 17. Nd4 Rad8 18. Qe2 Ne5 19. f4 Nexd3 20. cxd3 Bf6 21. Rf1
Qd7 22. Bf2 Rc8 23. Nf3 b5 24. axb5 axb5 25. Bxh4 Bxh4 26. Nxh4 d5 27. e5 d4
28. Ne4 Bxe4 29. dxe4 d3 30. Qe3 Qb7) 15. Qe2 {0.36/27 0 0.36/27 0} g5 {
0.05/48 0 0.05/48 0} 16. f3 {0.29/28 0 0.29/28 0} Nh5 {0.15/56 0 0.15/56 0} 17.
Qd2 {0.48/27 0 0.48/27 0} Ne5 {0.13/29 0 0.13/29 0} 18. Rec1 $6 {0.31/25 0 0.
31/25 0 Dragon 3: 0.00/36} (18. b4 {0.30/31 Dragon 3:} Kf8 19. Reb1 Rc8 20.
Nce2 Nf6 21. Bxg5 d5 22. exd5 Nxd3 23. cxd3 Qe5 24. Bh6+ Ke8 25. dxe6 Nd5 26.
exf7+ Kxf7 27. Bf4 Qg7 28. g4 hxg3 29. Nf5 Qh7 30. Nh6+ Ke6 31. Rc1 Kd7 32.
Rxc8 Rxc8 33. Ng4 Qxh3 34. Bxg3 Rg8 35. Qh6 Qxh6) 18... Kf8 {-0.39/28 0 -0.39/
28 0} 19. a5 $6 {0.26/28 0 0.26/28 0 Dragon 3: -0.82/32} (19. Qf2 {0.12/32
Dragon 3:} Rg7 20. Nb3 Bd8 21. Nd2 Kg8 22. Bd4 f6 23. Nf1 Nc6 24. Be3 Ne5 25.
Rd1 Rc8 26. Rac1 Qc6 27. Ne2 Bc7 28. b3 Re8 29. Bd4 d5 30. Bxe5 Bxe5 31. exd5
exd5 32. c4 Qc5 33. Qxc5 bxc5 34. cxd5 Bxd5 35. Nd2 Ng3 36. Bxa6 f5 37. Bb5
Nxe2+ 38. Bxe2 Bd4+ 39. Kf1) 19... b5 {-0.84/43 0 -0.84/43 0} 20. Ncxb5 $6 {
0.01/29 0 0.01/29 0 Dragon 3: -1.43/34} (20. Nde2 {-0.47/30 Dragon 3:} Rg7 21.
Bd4 f6 22. Qe3 Kf7 23. Nd1 d5 24. exd5 Bxd5 25. Ndc3 Bb7 26. Bb6 Qb8 27. Nd4
Nf4 28. Bf1 Qc8 29. Re1 Bb4 30. Nb3 Nc4 31. Bxc4 Qxc4 32. Nc5 Bxc5 33. Bxc5 Rc8
34. b4 Kg6 35. Rad1 e5 36. Rd6) 20... axb5 {-0.90/37 0 -0.90/37 0} 21. Bxb5 {
0.01/30 0 0.01/30 0} Rd8 $1 {-0.85/38 0 -0.85/38 0} 22. c4 {0.84/26 0 0.84/26 0
} Kg7 {-0.90/31 0 -0.90/31 0} 23. a6 {0.65/24 0 0.65/24 0} Ba8 {-0.89/34 0 -0.
89/34 0} 24. a7 $6 {0.57/26 0 0.57/26 0 Dragon 3: -1.58/30} (24. Qa5 {-1.29/32
Dragon 3:} Qxa5 25. Rxa5 Ng3 26. a7 g4 27. hxg4 Rh8 28. Bf2 Bg5 29. Rd1 Bf4 30.
Raa1 Rc8 31. b3 h3 32. Bxg3 Bxg3 33. Ne2 h2+ 34. Kh1 Bf2 35. Rxd6 Bc5 36. Rdd1
Rc7 37. Nf4 Bxa7 38. Nh5+ Kg6 39. Kxh2 Bc6 40. Kg3 Bxb5 41. cxb5 Bb8 42. Nf4+
Kg5) 24... Bf6 $1 {-0.97/37 0 -0.97/37 0} 25. b4 $6 {0.59/27 0 0.59/27 0
Dragon 3: -1.78/29} (25. Ra2 {-1.37/28 Dragon 3:} Qe7 26. Rd1 Rc8 27. b3 Ng3
28. Ba6 Rcd8 29. Bb5 Kh7 30. Qc2 Rc8 31. Bf2 g4 32. hxg4 Bg5 33. b4 Bf4 34. Ra3
Rc7 35. Ne2 Nxe2+ 36. Qxe2 Qg5 37. c5 dxc5 38. Bxc5 Rgc8 39. Qf2 Rd8 40. Rxd8
Qxd8 41. Ba4) 25... Kh7 $6 {-0.88/46 0 -0.88/46 0 Dragon 3: -0.94/30} (25...
Qe7 {-1.78/29 Dragon 3:} 26. Ra6 Rc8 27. Ne2 Ng3 28. Nxg3 hxg3 29. Qxd6 Rgd8
30. Qxe7 Bxe7 31. c5 Nd3 32. Bxd3 Rxd3 33. Re1 Bf6 34. Kf1 Rb3 35. Bd2 Kg6 36.
Rc1 Rb2 37. Be1 Be5 38. c6 f6 39. Rc4 Bc7 40. Rc5 Bd6 41. Rc4 Be5 42. Rc1 Bc7)
26. Qc2 $4 {0.74/26 0 0.74/26 0 Dragon 3: -5.33/28} (26. Ba4 {-0.94/30 Dragon
3:} Nf4 27. Kh1 Qb7 28. Ra2 Rc8 29. Bb5 Qe7 30. Ba6 Rc7 31. b5 Rxa7 32. b6 Rd7
33. Bb5 Rb7 34. Nc6 Nxc6 35. Bxc6 Rxb6 36. Bxa8 Rbb8 37. Ra7 Qf8 38. Bc6 Nh5
39. Kg1 Be5 40. c5 Rb2 41. Rc2 Rxc2 42. Qxc2 dxc5 43. Qxc5 Qxc5 44. Bxc5 Rc8
45. Ra6) 26... Nf4 $4 {-0.76/38 0 -0.76/38 0 Dragon 3: -1.11/30} (26... g4 {
-5.33/28 Dragon 3:} 27. fxg4 Nxg4 28. hxg4 Rxg4 29. e5+ Kh8 30. exf6 h3 31. Kf1
Rxg2 32. Qxg2 hxg2+ 33. Ke1 Nxf6 34. Bg1 d5 35. c5 Qf4 36. Kd1 Ng4 37. Kc2 Ne3+
38. Kb3 Qxd4 39. c6 e5 40. c7 Rc8) 27. Ra6 $4 {0.72/28 0 0.72/28 0 Dragon 3:
-4.43/34} (27. Kh1 {-1.11/30 Dragon 3:} Qe7 28. Rd1 Nh5 29. Kg1 Kg7 30. Bf2 Rc8
31. c5 dxc5 32. bxc5 Rgd8 33. c6 Ng3 34. Rac1 Rc7 35. Qa4 Kg6 36. Nb3 Rxd1+ 37.
Rxd1 Nxc6 38. Bc5 Rxa7 39. Bxe7 Rxa4 40. Bxf6 Rb4 41. Bxc6 Kxf6 42. Nd4 Ke5 43.
Bxa8 Rxd4) 27... g4 $1 {-1.77/47 0 -1.77/47 0} 28. hxg4 $6 {0.01/29 0 0.01/29
0 Dragon 3: -5.84/36} (28. fxg4 {-4.08/33 Dragon 3:} Nxg4 29. e5+ Kh8 30. hxg4
Rxg4 31. Bxf4 dxe5 32. Bc6 exf4 33. Rd1 f3 34. Nxf3 Rxd1+ 35. Qxd1 Bxc6 36.
a8=Q+ Bxa8 37. Rxa8+ Kg7 38. c5 Qg3 39. Ra2 h3 40. Qf1 Rxb4 41. c6 Rf4 42. Re2
Kf8 43. c7 Rc4 44. Kh1 hxg2+ 45. Qxg2 Qxc7 46. Qh3 Qd6 47. Rf2 Qd5 48. Kg2)
28... Nxg4 $1 {-2.00/38 0 -2.00/38 0} 29. e5+ {-0.01/30 0 -0.01/30 0} Rg6 $1 {
-2.39/51 0 -2.39/51 0} 30. fxg4 {-0.92/29 0 -0.92/29 0} Nxg2 $1 {-2.45/49 0 -2.
45/49 0} 31. Bf2 {-1.04/32 0 -1.04/32 0} dxe5 {-2.86/59 0 -2.86/59 0} 32. Rc6
$1 {-1.82/31 0 -1.82/31 0} Qb7 {-3.03/57 0 -3.03/57 0} 33. Nxe6 {-2.46/27 0 -2.
46/27 0} fxe6 {-3.06/55 0 -3.06/55 0} 34. Bb6 {-3.18/31 0 -3.18/31 0} Rdg8 $1 {
-3.27/38 0 -3.27/38 0} 35. Rf1 {-3.47/29 0 -3.47/29 0} Kh8 {-4.09/20 0 -4.09/
20 0} 36. Rxf6 {-9.52/28 0 -9.52/28 0} Rxf6 {-4.59/32 0 -4.59/32 0} 37. Qe2 {
-12.25/32 0 -12.25/32 0} Qg7 {-4.95/25 0 -4.95/25 0} 38. Ba4 {-18.31/31 0 -18.
31/31 0} Ne1 $1 {-6.29/27 0 -6.29/27 0} 39. Bd1 {-#11/28 0 -#11/28 0} Nf3+ {
-6.87/25 0 -6.87/25 0} 40. Kf2 {-28.84/25 0 -28.84/25 0} Bxc6 {-6.98/20 0 -6.
98/20 0} 41. Qc2 {-#9/23 0 -#9/23 0} Nd4+ {-7.16/16 0 -7.16/16 0} 42. Ke1 {
-#8/19 0 -#8/19 0} Nxc2+ {-7.25/18 0 -7.25/18 0} 43. Bxc2 {-#7/17 0 -#7/17 0}
Qxg4 {-7.37/14 0 -7.37/14 0} 44. Kd2 {-#6/15 0 -#6/15 0} Qg2+ $1 {-#7/13 0 -#7/
13 0} 45. Kc3 {-#5/13 0 -#5/13 0} Rf3+ {-#6/11 0 -#6/11 0} 46. Kb2 {-#4/11 0
-#4/11 0} Be4 {-#4/7 0 -#4/7 0} 47. Bf2 {-24.75/5 0 -24.75/5 0} Qxf2 $1 {
-#3/5 0 -#3/5 0} 48. b5 {-#2/7 0 -#2/7 0} Qxc2+ {-#2/3 0 -#2/3 0} 49. Ka1 {
-#1/6 0 -#1/6 0} Ra3# {-#1/1 0 -#1/1 0 White loses 0.39 pawn per move (2
blunders, 10 inaccuracies), Black loses 0.15 pawn per move (1 blunder, 7
inaccuracies).} 0-1
[/pgn]

[peter]

Fen: r4kr1/1bq1bp2/p2pp3/Pp2n1pn/3NP2p/2NBBP1P/1PPQ2P1/R1R3K1 w - - 0 20
White to Move.

Position is from a game between Fritz Neuronal and ClassicAra. Here, Fritz played Ncxb5. Do you think the move was good, bad, overconfident, or was a mistake played later in the game that lead to lost for white.

[pgn]
[Event "ClassicAra 0.9.9-Fritz 18 Neuronal match"]
[Site "?"]
[Date "2022.06.01"]
[Round "2"]
[White "Fritz 18 Neuronal"]
[Black "ClassicAra 0.9.9"]
[Result "0-1"]
[ECO "B90"]
[PlyCount "98"]
[EventDate "2022.06.01"]

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 $6 {0.81/33
Dragon 3:} (6... e5 {0.28/34 Dragon 3:} 7. Nb3 Be6 8. f3 h5 9. Nd5 Bxd5 10.
exd5 Nbd7 11. Qd2 g6 12. O-O-O Nb6 13. Kb1 Nbxd5 14. Bg5 Be7 15. Bd3 Rc8 16.
Rhe1 O-O 17. h3 Qc7 18. g4 Rfe8 19. gxh5 Nxh5 20. Bxg6 Nc3+ 21. Qxc3 Qxc3 22.
bxc3 fxg6 23. Bxe7 Rxe7 24. Rxd6 Nf4 25. Kb2 Kg7 26. Rb6) 7. Qf3 $6 {0.21/24 0
0.21/24 0 Dragon 3: +0.05/31} ({Theory prefers} 7. f3 $1) (7. a3 {0.81/33
Dragon 3:} Be7 8. f3 O-O 9. Qd2 d5 10. e5 Nfd7 11. f4 Nc6 12. Bd3 Nc5 13. Be2
Nd7 14. Bf3 Qc7 15. O-O Nxd4 16. Bxd4 f6 17. exf6 Bxf6 18. Ne2 Nb6 19. b3 Bxd4+
20. Qxd4 Bd7 21. Rac1 Rae8 22. a4 Bc6 23. Bh5 g6 24. Bf3 Nc8 25. c4 dxc4) 7...
h5 $6 {-0.33/37 0 -0.33/37 0 Dragon 3: +0.58/33} ({Relevant:} 7... Nbd7 8.
O-O-O h5 9. Kb1 Qc7 10. Qg3 h4 11. Qh3 b5 12. a3 Rb8 13. g4 b4 14. axb4 Rxb4
15. Na2 Rb8 16. f3 Nc5 17. g5 e5 18. Nf5 g6 19. gxf6 gxf5 20. exf5 Rh5 21. Qg4
Rxf5 22. Qxh4 Rxf3 23. Bc1 Bf5 24. Bc4 Ne6 25. Bd3 Bxd3 26. Rxd3 Rxd3 27. cxd3
Nd4 28. Qf2 Qb7 29. Re1 Kd7 30. Be3 Qf3 31. Qd2 Nc6 32. Rc1 d5 33. Qc2 d4 34.
Qc4 Qxf6 35. Bg5 Qe6 36. Qxa6 f6 37. Bd2 {Pruijssers,R (2550)-Van Wely,L (2615)
Netherlands 2019 0-1}) ({Theory prefers} 7... Nbd7 $1) (7... Nbd7 {0.05/31
Dragon 3:} 8. a4 Be7 9. Be2 h5 10. Qg3 Ne5 11. O-O-O Nfg4 12. h4 Nxe3 13. Qxe3
Nc6 14. f4 Bd7 15. Kb1 Rc8 16. Nb3 Qc7 17. g4 hxg4 18. Bxg4 Bf6 19. h5 Nb4 20.
h6 Rxh6 21. Rxh6 gxh6 22. f5 Bg5 23. Qf2 exf5 24. exf5) 8. h3 {0.19/26 0 0.19/
26 0} Qc7 $6 {-0.26/38 0 -0.26/38 0 Dragon 3: +0.80/35} (8... Bd7 {0.38/33
Dragon 3:} 9. a3 Nc6 10. Bd3 Ng4 11. Nxc6 Bxc6 12. Bd4 Ne5 13. Qe2 Nxd3+ 14.
Qxd3 Qg5 15. O-O Be7 16. f4 Qh6 17. Rf3 O-O 18. Raf1 h4 19. f5 exf5 20. Rxf5
Bd7 21. Nd5 Rae8 22. R5f3 Bg5 23. Be3 Bc6 24. Bxg5 Qxg5 25. Rf5 Qg3 26. Qd2
Bxd5) 9. a4 $1 {0.27/27 0 0.27/27 0} b6 $6 {-0.28/51 0 -0.28/51 0 Dragon 3: +0.
86/35} (9... Nc6 {0.56/34 Dragon 3:} 10. Nxc6 bxc6 11. Bd3 Nd7 12. O-O Ne5 13.
Qd1 Nxd3 14. cxd3 Rb8 15. a5 c5 16. d4 Rxb2 17. Qa4+ Bd7 18. Qc4 Be7 19. Qxa6
O-O 20. Rfc1 Rfb8 21. Qd3 Ra8 22. a6 Rb6 23. Qe2 c4 24. a7 Rxa7 25. Rxa7 Qxa7
26. d5 Qa3 27. Qxc4 Rb7 28. dxe6 Bxe6 29. Nd5 Qa5) 10. Bd3 {0.17/27 0 0.17/27
0 [#]} Be7 $6 {0.00/25 0 0.00/25 0 Dragon 3: +1.02/33} ({Predecessor:} 10...
Nbd7 11. O-O Bb7 12. Qe2 Be7 13. Nb3 O-O 14. Bg5 Ne5 15. f4 Nxd3 16. cxd3 Rfc8
17. Qe3 Qd7 18. Nd4 Rc7 19. Qf2 Rcc8 20. Qh4 Bd8 21. Rf3 b5 22. Rg3 Ne8 23.
Bxd8 Qxd8 24. Qxh5 Qf6 25. Nce2 bxa4 26. f5 Rc5 27. Rf1 Bc8 28. Nf3 exf5 29.
Nf4 fxe4 30. Nd5 Rxd5 31. Qxd5 Ra7 32. Qc6 Qd8 33. Qxe4 Re7 34. Qxa4 Qb6+ 35.
Kh2 Qxb2 36. Ng5 Qb5 37. Qf4 f6 38. Ne4 Qe5 39. Nxf6+ Nxf6 40. Qxe5 {Kharlamov,
V (2491)-Yurov,A (2414) ICCF email 2013 1-0}) (10... Nbd7 {0.56/34 Dragon 3:}
11. O-O Bb7 12. Qe2 g6 13. Nb3 Bg7 14. f4 O-O 15. Rae1 Rfe8 16. Qf2 Nc5 17. Bd4
Rac8 18. Re2 Qe7 19. Nd2 Nxd3 20. cxd3 b5 21. e5 Nd7 22. axb5 axb5 23. Nxb5
dxe5 24. fxe5 Ba6 25. Nd6 Bxd3 26. Qe3 Bxe2 27. Rxf7 Rc1+ 28. Kh2 Qd8 29. Qxe2
Rf8) 11. Qg3 $6 {0.18/27 0 0.18/27 0 Dragon 3: +0.51/37} (11. g4 {1.02/33
Dragon 3:} g6 12. O-O-O Nbd7 13. Kb1 Ne5 14. Qg2 b5 15. axb5 axb5 16. Bxb5+ Bd7
17. f4 Nc4 18. Bxc4 Qxc4 19. g5 Nh7 20. Qe2 Qb4 21. f5 O-O 22. Rhf1 Rfc8 23.
Nb3 Be8 24. fxe6 fxe6 25. h4 Nf8 26. Qd3 Nd7 27. Nd5 exd5 28. Qxd5+ Kh7 29.
Rf7+ Bxf7 30. Qxf7+ Kh8) 11... Bb7 {-0.07/26 0 -0.07/26 0} 12. O-O $6 {0.15/27
0 0.15/27 0 Dragon 3: +0.27/35} (12. f4 {0.58/35 Dragon 3:} h4 13. Qf3 g6 14.
Qf2 Nbd7 15. Nf3 Nc5 16. Bd4 Rf8 17. O-O Ncxe4 18. Bxe4 Nxe4 19. Nxe4 Bxe4 20.
Nd2 Bf5 21. Ra3 Rc8 22. c4 Rg8 23. Bxb6 Qb7 24. a5 g5 25. fxg5 Bxg5 26. Rf3
Bxd2 27. Qxd2 Be4 28. R3f2 Rg6 29. g4 hxg3 30. Rxf7 Qxf7 31. Rxf7 Kxf7 32. Qf4+
Bf5) 12... Nbd7 {0.20/50 0 0.20/50 0} 13. Rfe1 $6 {0.10/26 0 0.10/26 0 Dragon
3: +0.20/35} (13. f4 {0.59/31 Dragon 3:} h4 14. Qe1 Nh5 15. Rd1 Rc8 16. f5 e5
17. Nb3 Ndf6 18. Nd2 Ng3 19. Nc4 Nxf1 20. Bxf1 Nd7 21. Qf2 Nf6 22. Nxb6 Nxe4
23. Nxe4 Bxe4 24. c3 Rb8 25. Bxa6 O-O 26. Bb5 Rfd8 27. c4 d5 28. Nxd5 Bxd5 29.
cxd5) 13... h4 $1 {-0.07/58 0 -0.07/58 0} 14. Qf3 $1 {0.11/29 0 0.11/29 0} Rg8
$6 {0.02/56 0 0.02/56 0 Dragon 3: +0.68/36} (14... Nc5 {0.30/32 Dragon 3:} 15.
Nb3 Nfd7 16. Qd1 O-O 17. Nd4 Rad8 18. Qe2 Ne5 19. f4 Nexd3 20. cxd3 Bf6 21. Rf1
Qd7 22. Bf2 Rc8 23. Nf3 b5 24. axb5 axb5 25. Bxh4 Bxh4 26. Nxh4 d5 27. e5 d4
28. Ne4 Bxe4 29. dxe4 d3 30. Qe3 Qb7) 15. Qe2 {0.36/27 0 0.36/27 0} g5 {
0.05/48 0 0.05/48 0} 16. f3 {0.29/28 0 0.29/28 0} Nh5 {0.15/56 0 0.15/56 0} 17.
Qd2 {0.48/27 0 0.48/27 0} Ne5 {0.13/29 0 0.13/29 0} 18. Rec1 $6 {0.31/25 0 0.
31/25 0 Dragon 3: 0.00/36} (18. b4 {0.30/31 Dragon 3:} Kf8 19. Reb1 Rc8 20.
Nce2 Nf6 21. Bxg5 d5 22. exd5 Nxd3 23. cxd3 Qe5 24. Bh6+ Ke8 25. dxe6 Nd5 26.
exf7+ Kxf7 27. Bf4 Qg7 28. g4 hxg3 29. Nf5 Qh7 30. Nh6+ Ke6 31. Rc1 Kd7 32.
Rxc8 Rxc8 33. Ng4 Qxh3 34. Bxg3 Rg8 35. Qh6 Qxh6) 18... Kf8 {-0.39/28 0 -0.39/
28 0} 19. a5 $6 {0.26/28 0 0.26/28 0 Dragon 3: -0.82/32} (19. Qf2 {0.12/32
Dragon 3:} Rg7 20. Nb3 Bd8 21. Nd2 Kg8 22. Bd4 f6 23. Nf1 Nc6 24. Be3 Ne5 25.
Rd1 Rc8 26. Rac1 Qc6 27. Ne2 Bc7 28. b3 Re8 29. Bd4 d5 30. Bxe5 Bxe5 31. exd5
exd5 32. c4 Qc5 33. Qxc5 bxc5 34. cxd5 Bxd5 35. Nd2 Ng3 36. Bxa6 f5 37. Bb5
Nxe2+ 38. Bxe2 Bd4+ 39. Kf1) 19... b5 {-0.84/43 0 -0.84/43 0} 20. Ncxb5 $6 {
0.01/29 0 0.01/29 0 Dragon 3: -1.43/34} (20. Nde2 {-0.47/30 Dragon 3:} Rg7 21.
Bd4 f6 22. Qe3 Kf7 23. Nd1 d5 24. exd5 Bxd5 25. Ndc3 Bb7 26. Bb6 Qb8 27. Nd4
Nf4 28. Bf1 Qc8 29. Re1 Bb4 30. Nb3 Nc4 31. Bxc4 Qxc4 32. Nc5 Bxc5 33. Bxc5 Rc8
34. b4 Kg6 35. Rad1 e5 36. Rd6) 20... axb5 {-0.90/37 0 -0.90/37 0} 21. Bxb5 {
0.01/30 0 0.01/30 0} Rd8 $1 {-0.85/38 0 -0.85/38 0} 22. c4 {0.84/26 0 0.84/26 0
} Kg7 {-0.90/31 0 -0.90/31 0} 23. a6 {0.65/24 0 0.65/24 0} Ba8 {-0.89/34 0 -0.
89/34 0} 24. a7 $6 {0.57/26 0 0.57/26 0 Dragon 3: -1.58/30} (24. Qa5 {-1.29/32
Dragon 3:} Qxa5 25. Rxa5 Ng3 26. a7 g4 27. hxg4 Rh8 28. Bf2 Bg5 29. Rd1 Bf4 30.
Raa1 Rc8 31. b3 h3 32. Bxg3 Bxg3 33. Ne2 h2+ 34. Kh1 Bf2 35. Rxd6 Bc5 36. Rdd1
Rc7 37. Nf4 Bxa7 38. Nh5+ Kg6 39. Kxh2 Bc6 40. Kg3 Bxb5 41. cxb5 Bb8 42. Nf4+
Kg5) 24... Bf6 $1 {-0.97/37 0 -0.97/37 0} 25. b4 $6 {0.59/27 0 0.59/27 0
Dragon 3: -1.78/29} (25. Ra2 {-1.37/28 Dragon 3:} Qe7 26. Rd1 Rc8 27. b3 Ng3
28. Ba6 Rcd8 29. Bb5 Kh7 30. Qc2 Rc8 31. Bf2 g4 32. hxg4 Bg5 33. b4 Bf4 34. Ra3
Rc7 35. Ne2 Nxe2+ 36. Qxe2 Qg5 37. c5 dxc5 38. Bxc5 Rgc8 39. Qf2 Rd8 40. Rxd8
Qxd8 41. Ba4) 25... Kh7 $6 {-0.88/46 0 -0.88/46 0 Dragon 3: -0.94/30} (25...
Qe7 {-1.78/29 Dragon 3:} 26. Ra6 Rc8 27. Ne2 Ng3 28. Nxg3 hxg3 29. Qxd6 Rgd8
30. Qxe7 Bxe7 31. c5 Nd3 32. Bxd3 Rxd3 33. Re1 Bf6 34. Kf1 Rb3 35. Bd2 Kg6 36.
Rc1 Rb2 37. Be1 Be5 38. c6 f6 39. Rc4 Bc7 40. Rc5 Bd6 41. Rc4 Be5 42. Rc1 Bc7)
26. Qc2 $4 {0.74/26 0 0.74/26 0 Dragon 3: -5.33/28} (26. Ba4 {-0.94/30 Dragon
3:} Nf4 27. Kh1 Qb7 28. Ra2 Rc8 29. Bb5 Qe7 30. Ba6 Rc7 31. b5 Rxa7 32. b6 Rd7
33. Bb5 Rb7 34. Nc6 Nxc6 35. Bxc6 Rxb6 36. Bxa8 Rbb8 37. Ra7 Qf8 38. Bc6 Nh5
39. Kg1 Be5 40. c5 Rb2 41. Rc2 Rxc2 42. Qxc2 dxc5 43. Qxc5 Qxc5 44. Bxc5 Rc8
45. Ra6) 26... Nf4 $4 {-0.76/38 0 -0.76/38 0 Dragon 3: -1.11/30} (26... g4 {
-5.33/28 Dragon 3:} 27. fxg4 Nxg4 28. hxg4 Rxg4 29. e5+ Kh8 30. exf6 h3 31. Kf1
Rxg2 32. Qxg2 hxg2+ 33. Ke1 Nxf6 34. Bg1 d5 35. c5 Qf4 36. Kd1 Ng4 37. Kc2 Ne3+
38. Kb3 Qxd4 39. c6 e5 40. c7 Rc8) 27. Ra6 $4 {0.72/28 0 0.72/28 0 Dragon 3:
-4.43/34} (27. Kh1 {-1.11/30 Dragon 3:} Qe7 28. Rd1 Nh5 29. Kg1 Kg7 30. Bf2 Rc8
31. c5 dxc5 32. bxc5 Rgd8 33. c6 Ng3 34. Rac1 Rc7 35. Qa4 Kg6 36. Nb3 Rxd1+ 37.
Rxd1 Nxc6 38. Bc5 Rxa7 39. Bxe7 Rxa4 40. Bxf6 Rb4 41. Bxc6 Kxf6 42. Nd4 Ke5 43.
Bxa8 Rxd4) 27... g4 $1 {-1.77/47 0 -1.77/47 0} 28. hxg4 $6 {0.01/29 0 0.01/29
0 Dragon 3: -5.84/36} (28. fxg4 {-4.08/33 Dragon 3:} Nxg4 29. e5+ Kh8 30. hxg4
Rxg4 31. Bxf4 dxe5 32. Bc6 exf4 33. Rd1 f3 34. Nxf3 Rxd1+ 35. Qxd1 Bxc6 36.
a8=Q+ Bxa8 37. Rxa8+ Kg7 38. c5 Qg3 39. Ra2 h3 40. Qf1 Rxb4 41. c6 Rf4 42. Re2
Kf8 43. c7 Rc4 44. Kh1 hxg2+ 45. Qxg2 Qxc7 46. Qh3 Qd6 47. Rf2 Qd5 48. Kg2)
28... Nxg4 $1 {-2.00/38 0 -2.00/38 0} 29. e5+ {-0.01/30 0 -0.01/30 0} Rg6 $1 {
-2.39/51 0 -2.39/51 0} 30. fxg4 {-0.92/29 0 -0.92/29 0} Nxg2 $1 {-2.45/49 0 -2.
45/49 0} 31. Bf2 {-1.04/32 0 -1.04/32 0} dxe5 {-2.86/59 0 -2.86/59 0} 32. Rc6
$1 {-1.82/31 0 -1.82/31 0} Qb7 {-3.03/57 0 -3.03/57 0} 33. Nxe6 {-2.46/27 0 -2.
46/27 0} fxe6 {-3.06/55 0 -3.06/55 0} 34. Bb6 {-3.18/31 0 -3.18/31 0} Rdg8 $1 {
-3.27/38 0 -3.27/38 0} 35. Rf1 {-3.47/29 0 -3.47/29 0} Kh8 {-4.09/20 0 -4.09/
20 0} 36. Rxf6 {-9.52/28 0 -9.52/28 0} Rxf6 {-4.59/32 0 -4.59/32 0} 37. Qe2 {
-12.25/32 0 -12.25/32 0} Qg7 {-4.95/25 0 -4.95/25 0} 38. Ba4 {-18.31/31 0 -18.
31/31 0} Ne1 $1 {-6.29/27 0 -6.29/27 0} 39. Bd1 {-#11/28 0 -#11/28 0} Nf3+ {
-6.87/25 0 -6.87/25 0} 40. Kf2 {-28.84/25 0 -28.84/25 0} Bxc6 {-6.98/20 0 -6.
98/20 0} 41. Qc2 {-#9/23 0 -#9/23 0} Nd4+ {-7.16/16 0 -7.16/16 0} 42. Ke1 {
-#8/19 0 -#8/19 0} Nxc2+ {-7.25/18 0 -7.25/18 0} 43. Bxc2 {-#7/17 0 -#7/17 0}
Qxg4 {-7.37/14 0 -7.37/14 0} 44. Kd2 {-#6/15 0 -#6/15 0} Qg2+ $1 {-#7/13 0 -#7/
13 0} 45. Kc3 {-#5/13 0 -#5/13 0} Rf3+ {-#6/11 0 -#6/11 0} 46. Kb2 {-#4/11 0
-#4/11 0} Be4 {-#4/7 0 -#4/7 0} 47. Bf2 {-24.75/5 0 -24.75/5 0} Qxf2 $1 {
-#3/5 0 -#3/5 0} 48. b5 {-#2/7 0 -#2/7 0} Qxc2+ {-#2/3 0 -#2/3 0} 49. Ka1 {
-#1/6 0 -#1/6 0} Ra3# {-#1/1 0 -#1/1 0 White loses 0.39 pawn per move (2
blunders, 10 inaccuracies), Black loses 0.15 pawn per move (1 blunder, 7
inaccuracies).} 0-1
[/pgn]

MultiPV=12
depth 30/92 LC0:

Code: Select all

r4kr1/1bq1bp2/p2pp3/Pp2n1pn/3NP2p/2NBBP1P/1PPQ2P1/R1R3K1 w - - 0 1

Analysis by Lc0 v0.30.0-dev+git.77b5659:

1. = (-0.17): 20.Sde2 f6 21.Tf1 Tc8 22.Tf2 Dd7 23.f4 gxf4 24.Sxf4 Sg3 25.Dd1 Txc3 26.bxc3 Dc8 27.Ld4 Sf7 28.c4 bxc4 29.Ta4 cxd3 30.cxd3 Se5 31.Tc2 Sc6 32.Lf2 Dd7 33.Lxg3 hxg3 34.Dh5 Ld8 35.Tac4 Se5 36.Tc7 Lxc7 37.Txc7 Dxc7 38.Sxe6+ Ke7 39.Sxc7 Tc8 40.Dh7+ Sf7 41.Dg6 Txc7 42.Dxg3 Tc5 43.De1 Lc6 44.d4 Tg5 45.Kh2 Tb5 46.h4 Ld7 47.Dd2 Tb3 48.Kg1 Tb1+ 49.Kh2 Tb5 50.Dc3 Sh6 51.Kg3 Sg4 52.Kf4 f5 
2. =/+ (-0.34): 20.Tf1 Td8 21.Sb3 Db8 22.Lb6 Tc8 23.Tad1 Tg6 24.Se2 Kg8 25.De3 Sd7 26.La7 Da8 27.Df2 Tg7 28.Ld4 e5 29.Le3 Sf4 30.Tfe1 Sf6 31.Lb6 S6h5 32.Sd2 d5 
3. =/+ (-0.35): 20.Td1 Td8 21.Sb3 Db8 22.Lb6 Tc8 23.De3 Sf4 24.Kh1 f6 25.Se2 Sh5 26.La7 Da8 27.Ld4 Kf7 28.Sd2 Sxd3 29.cxd3 Tc2 30.Lc3 d5 31.e5 b4 32.Ld4 f5 33.Tac1 Tgc8 34.Sb3 Txe2 
4. =/+ (-0.36): 20.Te1 Tc8 21.Lf2 Kg7 22.Sde2 f6 23.Lb6 Dd7 24.Tf1 Kh8 25.Tf2 Tg7 26.Te1 Kg8 27.Sd4 Lf8 28.Sd1 d5 29.exd5 Lxd5 30.Se3 Sf4 31.Sg4 Sxg4 32.fxg4 Ld6 
5. =/+ (-0.42): 20.Lf2 Td8 21.Te1 d5 22.exd5 Lxd5 23.Sxd5 Txd5 24.Le4 Td7 25.Dc3 Dxc3 26.bxc3 Kg7 27.Sxb5 axb5 28.a6 f5 29.Lb7 Lf6 30.Tad1 Tc7 31.Tb1 Txc3 32.Txb5 Txc2 33.Tbxe5 Lxe5 34.Txe5 Td8 35.a7 Ta2 36.a8D Tdxa8 
6. =/+ (-0.46): 20.Lf1 Tg6 21.Te1 Kg8 22.Lf2 Td8 23.Tad1 Kh7 24.Sa2 Sg3 25.Sb4 Tdg8 26.c3 Dxa5 27.Ld3 Sh5 28.Lb1 Dc7 29.Sbc2 Sc4 30.Dc1 Lf6 31.Se3 Sxe3 32.Lxe3 Le5 33.Dd2 De7 34.Se2 a5 35.Ld4 Lc6 
7. =/+ (-0.49): 20.Le2 Td8 21.Sb3 Db8 22.Te1 Sf4 23.Kh1 Tg6 24.Tad1 Kg8 25.Lxf4 gxf4 26.Dxf4 Lg5 27.Dh2 Tf6 28.Dg1 Dc7 
8. =/+ (-0.65): 20.Df2 Tg7 21.Dd2 Kg8 22.Te1 Td8 23.Sb3 Dc8 24.Lb6 Tf8 25.Sd4 f5 26.exf5 exf5 27.Tf1 Sg3 28.Tf2 g4 
9. =/+ (-0.70): 20.Scxb5 axb5 21.Lxb5 Td8 22.c4 Kg7 23.a6 La8 24.Da5 Tc8 25.Dxc7 Txc7 26.b3 Sf4 27.Td1 Sed3 28.Kf1 Lf6 29.Ta2 Le5 30.Tad2 Sb4 31.Se2 Sxe2 32.Kxe2 
10. -/+ (-0.79): 20.Sce2 d5 21.exd5 Lxd5 22.Lf2 Td8 23.b3 Lb7 24.c4 b4 25.c5 Lc8 26.c6 Kg7 27.Td1 Sxd3 28.Dxd3 Td5 29.Dc4 Tgd8 30.Te1 e5 31.Sc2 Tb5 32.Se3 Le6 33.De4 Sf6 34.Dc2 Lc5 35.Tac1 Td6 36.Kh1 Txc6 37.Lg1 Dc8 38.Dd2 Dd7 39.Db2 Le7 40.Sc4 
11. -/+ (-0.89): 20.Sd1 d5 21.exd5 Lxd5 22.Sf2 Sf4 23.Lxf4 gxf4 24.Kh1 Td8 25.Td1 Tg3 26.Le2 f5 27.Sd3 Sxd3 28.Dxd3 Kf7 29.Lf1 Dc8 30.De2 Lf6 31.Df2 Dc5 32.Td2 Lxd4 33.Dxd4 Txh3+ 34.Kg1 Dxd4+ 35.Txd4 Tg8 36.Txf4 Lxf3 37.c4 bxc4 38.Txf5+ exf5 39.Lxc4+ Kf6 40.Lxg8 Tg3 41.Kf2 Le4 42.Lc4 Txg2+ 43.Ke3 Ke5 
12. -/+ (-0.96): 20.b3 d5 21.exd5 Lb4 22.Sde2 Sg3 23.Ld4 Sxf3+ 24.gxf3 Sxe2+ 25.Dxe2 Lxc3 26.Lxc3 Dxc3 27.dxe6 Te8 28.De1 Dc7 29.Db4+ Te7 30.Dg4 Txe6 31.Tf1 Tf6 32.Tae1 Tf4 33.Dh5 Dd6 34.Le4 Lc8 35.Kh1 Lxh3 36.Tg1 Df6 37.Td1 Lf5 38.Lxf5 Txf5 39.Td8+ Kg7 40.Txg8+ Kxg8 41.Dxh4 b4 42.Tg3 De5 43.Dg4 Kg7 44.Kg2 De2+ 45.Kh3 Kg6 

Depth 43/69 SF:

Code: Select all

r4kr1/1bq1bp2/p2pp3/Pp2n1pn/3NP2p/2NBBP1P/1PPQ2P1/R1R3K1 w - - 0 1

Analysis by Stockfish 290522:

1. =/+  (-0.52): 20.Sde2 Dd7 21.Tf1 f6 22.Ld4 Td8 23.Lb6 Tc8 24.Ld4 Sxd3 25.cxd3 Kf7 26.Sd1 e5 27.Lb6 d5 28.exd5 Lxd5 29.Se3 Sg3 30.Sxg3 hxg3 31.De1 f5 32.Sxd5 Dxd5 33.Dxg3 Tc2 34.Tad1 Txb2 35.d4 exd4 36.Txd4 De6 37.Tfd1 Te2 38.Td7 f4 39.Dg4 Dxg4 40.hxg4 Tc8 41.Kf1 Tcc2 42.Lc5 Ke8 43.Lxe7 Txe7 44.T7d6 b4 45.Tb6 Tee2 46.Txb4 
2. =/+  (-0.56): 20.Tf1 Td8 21.Sb3 Dc8 22.Lb6 Td7 23.Sd4 Ld8 24.Lxd8 Dxd8 25.De3 Kg7 26.Sce2 Kh8 27.Sb3 Df6 28.Tad1 Sg6 29.Tf2 Tc8 30.Sbd4 Sgf4 31.c3 e5 32.Sf5 d5 33.Sxf4 gxf4 34.De1 Sg3 35.Lc2 b4 36.cxb4 Sxf5 37.exf5 Tdc7 38.Lb1 d4 39.Tfd2 
3. =/+  (-0.62): 20.Td1 Tc8 21.Lf2 La8 22.Te1 Td8 23.Tac1 Kg7 24.Sb3 Db8 25.Ld4 f6 26.De3 Kf7 27.Lf1 Sg3 28.Ld3 Td7 29.Tcd1 Sh5 30.Lf1 Dc8 31.Df2 Te8 32.Lb6 Lf8 33.Sd2 Kg8 34.Le2 Sf4 35.Lf1 Tg7 36.Se2 Sh5 37.Sd4 f5 38.Tc1 fxe4 
4. -/+  (-0.75): 20.Sb3 Tc8 21.Tf1 Tg6 22.Tae1 Kg8 23.Tf2 Lf6 24.Lb6 Db8 25.Sc1 Tg7 26.Td1 Tc6 27.Sb3 Le7 28.Ld4 Tc8 29.Te1 f6 30.Lb6 Te8 31.Sd4 Lf8 32.Sde2 d5 33.exd5 exd5 34.Sd4 Lb4 35.Tff1 Tge7 36.Sf5 Te6 37.Le3 Sg3 38.Sxg3 hxg3 39.Ld4 Sc4 40.Dc1 Lxa5 41.Txe6 Txe6 42.Lf5 Te8 43.f4 Lc8 44.Lxc8 Lb6 45.Lxb6 Dxb6+ 46.Kh1 
5. -/+  (-0.89): 20.Te1 Td8 21.Df2 Dc8 22.Sde2 f6 23.Lb6 Kf7 24.Sd4 Tde8 25.Lf1 Sg3 26.Ld3 Sd7 27.La7 Sh5 28.Lf1 La8 29.Ted1 Se5 30.Lb6 Sg3 31.Ld3 Sd7 32.Te1 Sh5 33.Ted1 Lb7 34.La7 Se5 35.Lb6 Tg7 36.Scxb5 axb5 37.Sxb5 Teg8 38.Lf1 g4 39.hxg4 Sg3 40.a6 Lxe4 41.fxe4 Txg4 42.a7 
6. -/+  (-0.93): 20.Lf2 Td8 21.Sb3 Db8 22.Lb6 Tc8 23.Tf1 Tg6 24.Tae1 Kg8 25.Sc1 Tg7 26.Tf2 Sd7 27.Le3 Td8 28.Td1 Dc8 29.Te1 Se5 30.Lb6 Td7 31.S1e2 Ld8 32.Lxd8 Txd8 33.b4 Dc7 34.f4 gxf4 35.Sxf4 Sg3 36.Sce2 Sc4 37.Dc1 e5 38.Sd5 Lxd5 39.exd5 Da7 40.Dh6 Sh1 41.Tef1 Sxf2 42.Txf2 De3 43.Dxh4 
7. -/+  (-0.95): 20.Tcb1 Td8 21.Sb3 Db8 22.Lb6 Tc8 23.Tf1 Tg6 24.Tae1 Kg8 25.Sc1 Tg7 26.Tf2 Sd7 27.Le3 Td8 28.Td1 Se5 29.Lb6 Td7 30.S1e2 Tg6 31.Te1 Lf6 32.Le3 Ld8 33.b4 Lf6 34.Ld4 Tg7 35.Lb6 Dc8 36.Ld4 Dd8 37.De3 Df8 38.Td1 Dc8 39.Tff1 Tg6 40.f4 gxf4 41.Sxf4 Sxf4 
8. -/+  (-1.11): 20.Lf1 Tg6 21.Sa2 d5 22.exd5 Lxd5 23.Sb4 Lb7 24.Sd3 Td8 25.c4 Sxc4 26.b3 Dh2+ 27.Kxh2 Sxd2 28.Lxd2 Txd4 29.Le3 Td8 30.Kg1 Sf4 31.Se5 Tg8 32.Lb6 Lf6 33.Lxd8 Lxe5 34.Ta2 Sd5 35.Te1 Lg3 36.Td1 Kg7 37.Lxg5 Sc3 38.Tad2 Sxd1 39.Txd1 Ld5 40.b4 f5 41.Le3 Kf6 42.Lc5 Td8 43.Le2 Td7 44.Kf1 e5 45.Lf2 Ke6 46.Le3 La2 47.Txd7 Kxd7 48.Lc5 Ke6 49.Ld3 Ld5 50.Lf2 
9. -/+  (-1.33): 20.Le2 Tg6 21.Ld3 Tg7 22.Scxb5 axb5 23.Lxb5 Kg8 24.Te1 Lxe4 25.Lf2 Lg6 26.a6 Sf4 27.Te3 Lf6 28.Tc3 De7 29.Lf1 d5 30.Tb3 Sc4 31.Db4 Dxb4 32.Txb4 Kh7 33.a7 Tgg8 34.c3 Sd2 35.Lb5 Tgc8 36.Sc6 Sd3 37.Lxd3 Lxd3 38.Sb8 Sc4 39.Tb7 Sxb2 40.Txb2 Lxc3 
10. -/+  (-1.50): 20.Scxb5 axb5 21.Lxb5 Td8 22.c4 Lf6 23.a6 La8 24.a7 Kg7 25.Ta6 Kh7 26.Dc2 g4 27.fxg4 Sg3 28.Sc6 Lxc6 29.Lxc6 Sxc6 30.e5+ Tg6 31.exf6 Sb4 32.Lb6 Db7 33.Lxd8 Dxa6 34.Df2 Sc6 35.Lb6 Se2+ 36.Dxe2 Dxb6+ 37.Kh1 Dxa7 38.g5 Dc5 39.Dh5+ Kg8 40.Ta1 Sa5 41.b4 Dxb4 42.Dxh4 Dxc4 43.Dg3 Dd5 44.h4 Sb3 45.Tb1 Sd4 46.Tb8+ Kh7 47.Dg4 Sf5 48.h5 Tg8 49.g6+ fxg6 50.hxg6+ Txg6 
11. -/+  (-1.53): 20.Kf2 Td8 21.Sb3 Db8 22.Lb6 Kg7 23.Kg1 d5 24.exd5 Lxd5 25.Sd4 Td7 26.Te1 Tc8 27.Tad1 Sf4 28.Sce2 Sexd3 29.cxd3 Lf6 30.b4 La8 31.Kh1 Kh6 32.Sxf4 Dxf4 33.Dxf4 gxf4 34.Se2 Le7 35.Sxf4 Lxb4 36.Te5 Le7 37.Le3 Kg7 38.Th5 Tc2 
12. -/+  (-1.54): 20.De1 Tg7 21.Sa2 d5 22.exd5 Lxd5 23.Sc3 Lb7 24.Le4 Lxe4 25.Sxe4 Kg8 26.Sf2 Sc4 27.Sd3 Lf6 28.Lf2 Dd6 29.b3 Lxd4 30.bxc4 Lxa1 31.c5 Dc7 32.Txa1 Sf4 33.Sxf4 gxf4 34.Kh1 Tg6 35.c4 bxc4 36.Tc1 e5 37.Txc4 Tb8 38.De2 Tb5 39.Te4 Te6 40.Kh2 Txa5 41.Tb4 Ta1 42.Db2 Td1 

[Eelco de Groot]

My guess is that in the game 23.a6 was wrong because Rebel says it is wrong at move 22 as well. If you don't do that the Knight sac is playable, says Rebel. 20.Ncxb5 axb5 21.Bxb5 Rd8{!}


[fen]3r1kr1/1bq1bp2/3pp3/PB2n1pn/3NP2p/4BP1P/1PPQ2P1/R1R3K1 w - -[/fen]

Code: Select all

Engine: Rebel 14.1 MOD (512 MB)
gemaakt door Fabien Letouzey, Pawel Koziol, Chris Whittington en Ed Schröder

13/41  0:01   -0.05    22.a6 La8 23.c4 Kg7 24.b4 Kh7 
                       25.Tcb1 Lf6 26.Ta2 Pg3 27.Dc1 Kg7 
                       28.Lxg5 (750.356) 559 

14/41  0:01   +0.19    22.a6 La8 23.c4 Kg7 24.Td1 Kh7 25.b4 Lf6 
                       26.Dc1 Pg3 27.Ta3 (1.002.013) 557 

15/41  0:01   -0.11    22.a6 La8 23.c4 Pg3 24.b4 Kg7 25.Lf2 Kh7 
                       26.Te1 Pxc4 27.Dc1 (1.128.188) 564 

16/47  0:05   -0.29    22.a6 La8 23.c4 Pg3 24.b4 Kg7 25.Td1 Kh7 
                       26.Tac1 Lf6 27.De1 Th8 28.Lf2 Pg6 (3.446.077) 606 

17/50  0:10   -0.29    22.a6 La8 23.c4 Pg3 24.b4 Kg7 25.Te1 Lf6 
                       26.Lxg5 De7 27.Lf4 (6.217.293) 616 

18/60  0:18   -0.39    22.a6 La8 23.c4 Kg7 24.b4 Pg3 25.Td1 Lf6 
                       26.Lxg5 De7 27.Le3 Kh7 28.Dc2 Pg6 
                       29.Df2 Tc8 30.Ta2 (11.848.072) 630 

19/60  0:29   -0.63    22.a6 La8 23.c4 Lf6 24.b4 Kg7 25.Td1 Kh7 
                       26.Ta2 Tc8 27.De1 De7 28.Pe2 Pxc4 (18.437.354) 634 

19/60  0:32   -0.41    22.c4 Kg7 23.a6 La8 24.Tcb1 Kh7 
                       25.b4 Lf6 26.Dc2 De7 (20.642.369) 635 

20/60  0:47   -0.44    22.c4 Kg7 23.Td1 La8 24.a6 Kh7 25.b4 Lf6 
                       26.Ta2 Tc8 27.De1 De7 28.De2 Pg3 (30.218.776) 638 

21/61  1:24   -0.49    22.c4 Lf6 23.b4 Kg7 24.a6 La8 25.Td1 Kh7 
                       26.Dc2 Tc8 27.Tab1 De7 28.Pe2 Pg6 
                       29.c5 dxc5 30.bxc5 (54.041.867) 642 

22/89  2:48   -0.46    22.c4 Kg7 23.Td1 Lf6 24.a6 La8 25.b4 Pg3 
                       26.Lxg5 De7 27.Le3 Kh7 28.Ta2 Tg6 (108.126.709) 643 

23/89  4:10   -0.46    22.c4 Kg7 23.b4 La8 24.Pe2 Tb8 25.a6 Tbc8 
                       26.c5 dxc5 27.Lxc5 Kh7 28.Lxe7 Dxe7 (161.586.723) 645 

24/89  5:40   -0.43    22.c4 Kg7 23.b4 La8 24.Pe2 Tc8 25.a6 Kh7 
                       26.Ld4 Dd8 27.Ta2 Pg6 28.Tca1 Dc7 (218.395.671) 641 

25/89  7:53   -0.40    22.c4 Kg7 23.b4 La8 24.Pe2 Tb8 25.a6 Kh7 
                       26.Ta2 Pg3 27.Kh2 Tbd8 28.Pd4 (300.234.107) 634 

26/89  11:52  -0.43    22.c4 Kg7 23.b4 La8 24.Pe2 Kh7 
                       25.Lb6 Db8 26.Kh1 Tc8 27.De3 Ld8 
                       28.Lxd8 Tcxd8 29.a6 Dc7 (455.132.901) 638 

27/90  15:57  -0.42    22.c4 Kg7 23.b4 La8 24.Pe2 Tc8 25.a6 Kh7 
                       26.Ta2 Tcd8 27.Td1 Tb8 28.De1 (614.780.981) 642 

28/116 26:42  -0.43    22.c4 Kg7 23.b4 La8 24.Pe2 Kh7 
                       25.Ta3 Tc8 26.Kh1 Lf6 27.a6 Tb8 
                       28.Kg1 Pf4 29.Dc2 Peg6 30.Pxf4 gxf4 (1.042.740.762) 650 

29/116 42:09  -0.43    22.c4 Kg7 23.b4 La8 24.Pe2 Kh7 
                       25.Ta3 Db8 26.Pd4 Pg3 27.Dc2 Dc7 
                       28.a6 Lf6 29.Td1 De7 (1.668.244.416) 659 

30/116 68:45  -0.43    22.c4 La8 23.b4 Kg7 24.Pe2 Kh7 
                       25.Ta3 Tc8 26.Kh1 Lf6 27.a6 Dd8 
                       28.De1 Tc7 (2.767.000.172) 670 

[AdminX]

My guess is that in the game 23.a6 was wrong because Rebel says it is wrong at move 22 as well. If you don't do that the Knight sac is playable, says Rebel. 20.Ncxb5 axb5 21.Bxb5 Rd8{!}


[fen]3r1kr1/1bq1bp2/3pp3/PB2n1pn/3NP2p/4BP1P/1PPQ2P1/R1R3K1 w - -[/fen]

Code: Select all

Engine: Rebel 14.1 MOD (512 MB)
gemaakt door Fabien Letouzey, Pawel Koziol, Chris Whittington en Ed Schröder

13/41  0:01   -0.05    22.a6 La8 23.c4 Kg7 24.b4 Kh7 
                       25.Tcb1 Lf6 26.Ta2 Pg3 27.Dc1 Kg7 
                       28.Lxg5 (750.356) 559 

14/41  0:01   +0.19    22.a6 La8 23.c4 Kg7 24.Td1 Kh7 25.b4 Lf6 
                       26.Dc1 Pg3 27.Ta3 (1.002.013) 557 

15/41  0:01   -0.11    22.a6 La8 23.c4 Pg3 24.b4 Kg7 25.Lf2 Kh7 
                       26.Te1 Pxc4 27.Dc1 (1.128.188) 564 

16/47  0:05   -0.29    22.a6 La8 23.c4 Pg3 24.b4 Kg7 25.Td1 Kh7 
                       26.Tac1 Lf6 27.De1 Th8 28.Lf2 Pg6 (3.446.077) 606 

17/50  0:10   -0.29    22.a6 La8 23.c4 Pg3 24.b4 Kg7 25.Te1 Lf6 
                       26.Lxg5 De7 27.Lf4 (6.217.293) 616 

18/60  0:18   -0.39    22.a6 La8 23.c4 Kg7 24.b4 Pg3 25.Td1 Lf6 
                       26.Lxg5 De7 27.Le3 Kh7 28.Dc2 Pg6 
                       29.Df2 Tc8 30.Ta2 (11.848.072) 630 

19/60  0:29   -0.63    22.a6 La8 23.c4 Lf6 24.b4 Kg7 25.Td1 Kh7 
                       26.Ta2 Tc8 27.De1 De7 28.Pe2 Pxc4 (18.437.354) 634 

19/60  0:32   -0.41    22.c4 Kg7 23.a6 La8 24.Tcb1 Kh7 
                       25.b4 Lf6 26.Dc2 De7 (20.642.369) 635 

20/60  0:47   -0.44    22.c4 Kg7 23.Td1 La8 24.a6 Kh7 25.b4 Lf6 
                       26.Ta2 Tc8 27.De1 De7 28.De2 Pg3 (30.218.776) 638 

21/61  1:24   -0.49    22.c4 Lf6 23.b4 Kg7 24.a6 La8 25.Td1 Kh7 
                       26.Dc2 Tc8 27.Tab1 De7 28.Pe2 Pg6 
                       29.c5 dxc5 30.bxc5 (54.041.867) 642 

22/89  2:48   -0.46    22.c4 Kg7 23.Td1 Lf6 24.a6 La8 25.b4 Pg3 
                       26.Lxg5 De7 27.Le3 Kh7 28.Ta2 Tg6 (108.126.709) 643 

23/89  4:10   -0.46    22.c4 Kg7 23.b4 La8 24.Pe2 Tb8 25.a6 Tbc8 
                       26.c5 dxc5 27.Lxc5 Kh7 28.Lxe7 Dxe7 (161.586.723) 645 

24/89  5:40   -0.43    22.c4 Kg7 23.b4 La8 24.Pe2 Tc8 25.a6 Kh7 
                       26.Ld4 Dd8 27.Ta2 Pg6 28.Tca1 Dc7 (218.395.671) 641 

25/89  7:53   -0.40    22.c4 Kg7 23.b4 La8 24.Pe2 Tb8 25.a6 Kh7 
                       26.Ta2 Pg3 27.Kh2 Tbd8 28.Pd4 (300.234.107) 634 

26/89  11:52  -0.43    22.c4 Kg7 23.b4 La8 24.Pe2 Kh7 
                       25.Lb6 Db8 26.Kh1 Tc8 27.De3 Ld8 
                       28.Lxd8 Tcxd8 29.a6 Dc7 (455.132.901) 638 

27/90  15:57  -0.42    22.c4 Kg7 23.b4 La8 24.Pe2 Tc8 25.a6 Kh7 
                       26.Ta2 Tcd8 27.Td1 Tb8 28.De1 (614.780.981) 642 

28/116 26:42  -0.43    22.c4 Kg7 23.b4 La8 24.Pe2 Kh7 
                       25.Ta3 Tc8 26.Kh1 Lf6 27.a6 Tb8 
                       28.Kg1 Pf4 29.Dc2 Peg6 30.Pxf4 gxf4 (1.042.740.762) 650 

29/116 42:09  -0.43    22.c4 Kg7 23.b4 La8 24.Pe2 Kh7 
                       25.Ta3 Db8 26.Pd4 Pg3 27.Dc2 Dc7 
                       28.a6 Lf6 29.Td1 De7 (1.668.244.416) 659 

30/116 68:45  -0.43    22.c4 La8 23.b4 Kg7 24.Pe2 Kh7 
                       25.Ta3 Tc8 26.Kh1 Lf6 27.a6 Dd8 
                       28.De1 Tc7 (2.767.000.172) 670 

Yeah, as a human I might have been tempted to play it as well, placing to much faith in the 'a' pawn also. On the other hand I might have blinked and played the safer line (Nde2), the kingside attack looks very dangerous to me. At the end of the day, my choice would depend on if I were playing a human or computer.