This game is even more impressive for me. Being a pawn down, it is true that the queen sac is among top SF choices, but not as an only move. It was around +0.8 to +1 for white, together with 18.- ..., Qc7 and 18.- ..., Qc8. OTOH, 25.- g6? is the turning point of the game, where white started to go wrong.chrisw wrote: ↑Sun Feb 26, 2023 9:58 am Queen sac, looks entirely speculative, but worked ...
[pgn][Event "?"]
[Site "?"]
[Date "2023.02.26"]
[Round "48"]
[White "Stockfish_13"]
[Black "Chess-System-Tal-1.59"]
[Result "0-1"]
[ECO "C16"]
[Opening "French"]
[Variation "Winawer, Petrosian Variation"]
[TimeControl "20+0.05"]
[Termination "adjudication"]
[PlyCount "135"]
[GameDuration "00:00:43"]
[GameEndTime "2023-02-26T08:57:50.470 W. Europe Standard Time"]
[GameStartTime "2023-02-26T08:57:06.599 W. Europe Standard Time"]
1. e4 { book } 1... e6 { book } 2. d4 { book } 2... d5 { book } 3. Nc3 {
book } 3... Bb4 { book } 4. e5 { book } 4... Qd7 { book } 5. a3 { book }
5... Bf8 { book } 6. Nh3 { book } 6... b6 { book } 7. Nf4 { book } 7... Ne7
{ book } 8. Bb5 { book } 8... c6 { book } 9. Ba4 { +1.23/19 0.57s } 9... b5
{ -1.20/16 0.79s } 10. Bb3 { +1.30/21 0.55s } 10... c5 { -1.78/15 0.76s }
11. Nce2 { +1.01/19 0.54s } 11... cxd4 { -1.50/16 0.61s } 12. Nxd4 {
+1.04/19 0.47s } 12... Nbc6 { -1.59/16 0.77s } 13. Nxb5 { +1.14/19 0.91s }
13... Nf5 { -1.34/17 0.58s } 14. g4 { +1.32/17 0.17s } 14... Nh4 { -1.50/16
0.54s } 15. Ba4 { +1.31/17 0.27s } 15... Be7 { -1.67/16 0.80s } 16. Nd4 {
+1.20/20 0.47s } 16... Bb7 { -2.21/16 0.45s } 17. O-O { +1.29/19 0.35s }
17... O-O { -1.06/16 0.94s } 18. Nd3 { +1.19/21 1.3s } 18... Nxd4 { 0.00/15
0.57s } 19. Bxd7 { +1.65/18 0.46s } 19... Ndf3+ { -0.20/13 0.33s } 20. Kh1
{ +1.77/19 0.28s } 20... d4 { +0.59/14 0.66s } 21. Bb5 { +2.11/20 0.69s }
21... f5 { +1.08/13 0.55s } 22. g5 { +2.78/19 1.5s } 22... Nxe5+ { +0.59/12
0.88s } 23. f3 { +2.75/16 0.19s } 23... Nexf3 { 0.00/13 0.31s } 24. Ba6 {
+2.84/19 0.64s } 24... Be4 { -0.41/15 0.70s } 25. Rf2 { +2.95/17 0.18s }
25... Rad8 { +0.98/13 0.34s } 26. g6 { +1.60/21 3.6s } 26... e5 { +3.45/13
0.52s } 27. Re2 { +1.41/20 1.6s } 27... Ba8 { +1.86/12 0.30s } 28. Nf4 {
+0.26/17 0.28s } 28... Rf6 { +6.41/13 0.33s } 29. Bc4+ { -0.97/17 0.44s }
29... Kh8 { +6.98/14 0.40s } 30. Bf7 { -2.17/18 0.93s } 30... hxg6 {
+7.96/14 0.42s } 31. Bd5 { -3.02/20 0.85s } 31... Rxd5 { +8.89/15 0.30s }
32. Nxd5 { -2.71/17 0.27s } 32... Bxd5 { +9.58/15 0.24s } 33. c4 { -3.16/16
0.23s } 33... Bc6 { +8.54/14 0.27s } 34. b4 { -2.70/13 0.092s } 34... Kh7 {
+8.65/14 0.43s } 35. Raa2 { -5.77/19 1.7s } 35... d3 { +9.80/16 0.55s } 36.
Qxd3 { -5.25/17 0.17s } 36... Ne1+ { +10.67/14 0.22s } 37. Qd5 { -3.78/16
0.046s } 37... Bxd5+ { +11.15/15 0.20s } 38. cxd5 { -5.16/19 0.21s } 38...
Nd3 { +11.40/17 0.30s } 39. Be3 { -5.45/22 1.1s } 39... Rd6 { +11.39/16
0.31s } 40. Bc5 { -5.55/17 0.041s } 40... Rd7 { +13.52/16 0.28s } 41. Rad2
{ -6.83/19 0.42s } 41... Nxc5 { +15.71/16 0.23s } 42. d6 { -6.22/14 0.012s
} 42... Ne4 { +15.13/15 0.21s } 43. dxe7 { -6.62/15 0.060s } 43... Rxe7 {
+15.99/16 0.30s } 44. Rxe4 { -6.55/14 0.040s } 44... fxe4 { +18.18/15 0.21s
} 45. Re2 { -6.77/14 0.041s } 45... Rf7 { +19.21/17 0.24s } 46. Kg1 {
-6.50/15 0.050s } 46... Rf4 { +18.54/17 0.20s } 47. b5 { -7.99/16 0.16s }
47... Nf5 { +20.39/17 0.35s } 48. a4 { -8.08/15 0.024s } 48... e3 {
+19.94/17 0.20s } 49. a5 { -6.76/11 0.015s } 49... Rb4 { +21.48/17 0.26s }
50. b6 { -7.02/13 0.029s } 50... axb6 { +21.75/17 0.17s } 51. axb6 {
-7.36/13 0.043s } 51... Rxb6 { +22.29/15 0.13s } 52. Kg2 { -7.66/13 0.053s
} 52... Rb1 { +23.45/16 0.12s } 53. Kh3 { -9.54/15 0.14s } 53... g5 {
+24.59/16 0.20s } 54. Rg2 { -7.85/14 0.055s } 54... Kg6 { +26.32/16 0.12s }
55. Rg1 { -9.94/13 0.044s } 55... Rb4 { +28.65/16 0.23s } 56. Kg2 {
-9.72/13 0.015s } 56... g4 { +28.62/16 0.16s } 57. Kh1 { -9.53/13 0.017s }
57... Kg5 { +31.16/16 0.27s } 58. h3 { -16.84/16 0.12s } 58... e2 {
+32.54/16 0.18s } 59. Rc1 { -54.25/18 0.065s } 59... gxh3 { +40.21/15 0.17s
} 60. Kg1 { -M14/21 0.054s } 60... Kf4 { +40.66/15 0.15s } 61. Kf2 {
-24.17/13 0.023s } 61... Re4 { +49.17/15 0.16s } 62. Re1 { -77.01/19 0.061s
} 62... g5 { +55.50/15 0.081s } 63. Rxe2 { -M18/23 0.063s } 63... Rxe2+ {
+55.59/17 0.16s } 64. Kxe2 { -M16/21 0.048s } 64... g4 { +56.92/18 0.25s }
65. Kf1 { -77.92/18 0.024s } 65... g3 { +62.54/18 0.24s } 66. Ke1 { -M14/24
0.048s } 66... h2 { +M13/17 0.086s } 67. Kd1 { -M12/21 0.017s } 67... h1=Q+
{ +M11/22 0.087s } 68. Kc2 { -M10/21 0.015s, Black wins by adjudication }
0-1
[/pgn]
Regarding the opening: 5.- ..., Bf8 looked really strange in my eyes, but I checked that it is a common move. Maybe protecting g7 against Qg4 attack? The opening followed the game Tal (1—0) Vaganian from 1988 until 9.- Ba4, when CSTal deviated with 9.- ..., b5 instead of 9.- ..., Ba6 played by Vaganian.
Regards from Spain.
Ajedrecista.