The Chess program known as Stockfish is in the process of drubbing the Chess program known as Komodo in the latest battle for supremacy of the “engines.” What is the point? To make things worse, some obviously inept human has chosen the openings for the “players.” I can understand assigning a particular opening, such as the Sicilian, and making the opening moves of 1 e4 c5 for the programs and let them go from there. I could even understand forcing the programs to play the Najdorf, far and away the most often played Sicilian, by beginning the game with White choosing the sixth move after 1 e4 c5 2 Nf3 d6 3 d4 cxd4 4 Nxd4 Nf6 5 Nc3 a6. I cannot understand a game beginning after ten inferior moves, as is the case in the following examples. The TCEC show seems to be a complete exercise in futility. The only interesting thing about TCEC is what move the top programs will play in the opening when out of ‘book’. That said, you know this writer found interest in the two Leningrad Dutch games which follow. I must add that the move 7…Nc6 is no longer the “main variation” of the Leningrad Dutch. Stockfish prefers 7…c6, and so should you.
KomodoDragon vs Stockfish
TCEC match game 51.1
A89 Dutch, Leningrad, main variation with Nc6
- d4 f5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. c4 d6 6. O-O O-O 7. Nc3 Nc6 8. d5 Ne5 9. Nxe5 dxe5 10. Qb3 h6 11. Be3 Ng4 12. Bd2 e4 13. Rad1 a5 14. Kh1 Kh7 15. Qc2 Qd6 16. f3 e3 17. Be1 Nf2+ 18. Bxf2 exf2 19. f4 e5 20. dxe6 Qc5 21. Na4 Qb4 22. a3 Qe7 23. Rxf2 Bxe6 24. Bxb7 Rad8 25. Rff1 Bd7 26. Bf3 Bxa4 27. Qxa4 Bxb2 28. Rxd8 Rxd8 29. Qxa5 Bxa3 30. Rb1 Bc5 31. Kg2 Bb6 32. Qb5 h5 33. h4 Kh6 34. Qa4 Qe8 35. Qc2 Qe3 36. Qb2 Bd4 37. Qb7 Qe7 38. Qc6 Rd6 39. Qa8 Rd8 40. Qa5 Bb6 41. Qb5 Qd6 42. Qa6 Bd4 43. Qa5 Bb6 44. Qa1 Bd4 45. Qa2 Be3 46. Kh3 Bf2 47. Qa4 Qd7 48. Qb3 Qd6 49. Kg2 Bd4 50. Qa4 Be3 51. Bd5 Qc5 52. Qa6 Bd4 53. Kh3 Qe7 54. Bf3 Qd6 55. Qa4 Bf2 56. Qa5 Qc5 57. Qxc5 Bxc5 58. Rb5 Ba3 59. Re5 Rd7 60. Re6 Re7 61. Rc6 Bb2 62. Kg2 Bd4 63. Kf1 Bb2 64. Bd5 Kg7 65. c5 Bd4 66. Be6 Kh7 67. Bc4 Kg7 68. Kg2 Kh7 69. Kf1 Kg7 70. Bd3 Be3 71. Bc2 Bd4 72. Bd1 1/2-1/2
1.d4 f5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. c4 d6 6. O-O O-O 7. Nc3 Nc6 8. d5 Ne5 9. Nxe5 dxe5 10. Qb3 h6 (The was the last ‘book’ move. I kid you not. Some inept human forced the programs to begin playing in this position. It makes me wonder what’s going on…I was curious, so regular readers know what comes next…Let us begin anew…)
- d4 f5 2. Nf3 (Although Stockfish 14 @depth 52 prefers the move played in the game, SF 14.1 will fire 2 Bg5 at you! Is that amazin’, or what? If you play the Dutch you had better come to the board armed with the latest ideas after 2 Bg5 or you will go down HARD, like rot-gut whiskey. According to the ChessBaseDataBase the most often played move has been 2 g3, with the CBDB containing 8954 games with the move. Deep Fritz 13 prefers this move, which has scored 59%. The game move shows 5006 games with white scoring 56%. 3 c4 comes in third with 4240 examples scoring 56%. In fourth place is the move 2 Nc3. In 2923 games it has scored 57%. 2 Bg5 comes next with 1895 games that have scored 58% for white. The move 2 e4 is next and it has scored only 48% for white in 707 games) 2…Nf6 (Stockfish 14.1 @depth 48 will play this move, as will Fritz 17 @depth 28, but leave it running a little longer and at depth 29 the program plays 2…e6, which is proof positive there is something amiss in the bowels of Fritz 17) 3. g3 g6 (Although Sockfish 14 plays 3…e6, SF 14.1 corrected the obvious problem by switching to 3…d6, which has scored the highest, 58%, albeit in limited action of only 555 games. The game move has been the most often played move while scoring 55% in 2409 games) 4. Bg2 (According to the CBDB this move has been played far more than all other moves shown combined and it is not even close, as the game move has been played 5094 times while scoring 56%. With 863 games the move 4 c4 is next, and it, too, has scored 56%. It is indeed interesting that Stockfish 14.1 @depth 47 will play 4 Bg2, but @depth 51 shows 4 b3, a move having been seen in only 108 games while scoring 59%. But then at depth 60 it reverts to 4 Bg2. It makes me wonder, why?) 4…Bg7 (This move has been played in 5496 games and has scored 57%, but in 1079 games 4…d6 has scored 59% for white. Here’s the deal…@depth 44 Stockfish will play 4…Bg7, but leave it running only a short time and @depth 45 it changes it’s algorithm to 4…d6…) 5. c4 d6 (5…0-0 has been the most often played move, and it is the choice of Stockfish 10 [TEN? What happened to the latest programs? The CBDB is in dire need of a tune-up!]. Fritz 17 will play the second most often played move of 5…d6. Deep Fritz 13 will play 5…c5. The CBDB contains only ONE GAME with the move 5…c5) 6. O-O O-O 7. Nc3 Nc6 (As has been written on this blog previously, 7…c6 is the best move in the position. 7…Qe8 was the choice of the leading exponent of the Leningrad Dutch, GM Vladimir Malaniuk.
ForwardChess.com sent two new books
which were downloaded onto the laptop, and were the first two books read via computer. Unfortunately, the author, Mihail Marin,
focused exclusively on the above mentioned, second-rate move, 7…Qe8 for the Leningrad Dutch. Not wanting to write a negative review, I eschewed writing about the book. Marin dedicated the book “To my late mother, who used to tell me: “Play beautifully, Bobita!” The author writes, “…I became so deeply involved in the world of the Leningrad that in five consecutive tournaments I played 1…f5 in all my games, except those starting with 1 e4. I actually adopted a similar strategy with White, starting all my games in those tournaments with 1 f4.” Regular readers know what that meant to the AW! Before reading the books I ‘just had’ to replay each and every one of those games, while making notes for the review that never was…You, too, can reply the games, which are easy to locate at 365Chess.com. Let me say that the book was enjoyed immensely, but I have trouble recommending any book using an antiquated line as the basis for the book. On the other hand, his other Dutch book, Dutch Sidelines, is an EXCELLENT book that I highly recommend, and it should be read prior to any player attempting to play the Leningrad Dutch, or any opening beginning with 1…f5, because the players sitting behind the White pieces will throw everything including the kitchen sink at you before you ever get to play a Leningrad Dutch proper, so you better be prepared for all the sidelines, and this is a FANTASTIC book for just that purpose! See (https://xpertchesslessons.wordpress.com/2021/09/08/a-chess-game-begins-with-the-opening/) You can thank me later…) 8. d5 Ne5 9. Nxe5 dxe5 10. Qb3 h6 (In 128 games this move has allowed White to score 64%. Stockfish 14.1 @depth 46, and Komodo 14 @depth 37, will play 10…e6, a move shown in only 24 games at the CBDB. White has scored 69% against the move, so if you intend on playing the Leningrad Dutch you need to produce better moves before reaching this position.
Stockfish vs KomodoDragon
TCEC match game 52.1
A89 Dutch, Leningrad, main variation with Nc6
- d4 f5 2. Nf3 Nf6 3. g3 g6 4. Bg2 Bg7 5. c4 d6 6. O-O O-O 7. Nc3 Nc6 8. d5 Ne5 9. Nxe5 dxe5 10. Qb3 h6 11. Bd2 e6 12. e4 f4 13. Rac1 Kh7 14. Rfd1 exd5 15. cxd5 Ng4 16. f3 Ne3 17. Bxe3 fxe3 18. Ne2 h5 19. Qxe3 Bh6 20. f4 Bg4 21. Bf3 Bd7 22. Rc3 a5 23. d6 c6 24. Rb3 Rb8 25. Rbd3 h4 26. b3 Qf6 27. Rf1 hxg3 28. hxg3 g5 29. fxe5 Qxe5 30. g4 Kg6 31. Kg2 Bg7 32. Ng3 Rf4 33. Nh5 Rf7 34. a4 Rbf8 35. Ng3 Rh8 36. Nh5 Rhf8 37. Ng3 Rh8 38. Rf2 Rh4 39. Rc2 1/2 – 1/2
I wondered about the move 11 Be3 in the first game and was therefore not surprised when Stockfish varied. 11 Bd2 (varies from 11 Be3 in the first game of the mini-match. Komodo 14 @depth36 will play 11 Rd1. The CBDB contains 48 games with the move and it has scored 66% versus 2445 opposition. Going one fathom deeper to depth 37 Komodo 14 plays 11 Bd2. There are only 4 games in which this move has been attempted while scoring 50% against a composite player rated 2433. Stockfish 14.1 @depth 41 prefers the move 11 a4. Only two games are shown at the CBDB, and both ended in wins for players of the White. At depth 39 Stockfish 11 [SF 11?! How many years has it been since SF 11 was state of the art?] will play 11…e4. Going one fathom deeper the same antiquated ‘engine’ plays 11…e6…
Pavel Eljanov (2680) vs Gary William Lane (2358)
Event: Gibraltar Masters 2019
Site: Caleta ENG Date: 01/22/2019
ECO: A89 Dutch, Leningrad, main variation with Nc6
1.d4 f5 2.g3 Nf6 3.Bg2 g6 4.Nf3 Bg7 5.O-O O-O 6.c4 d6 7.Nc3 Nc6 8.d5 Ne5 9.Nxe5 dxe5 10.Qb3 h6 11.a4 g5 12.a5 a6 13.Be3 Qe8 14.Bc5 Qf7 15.Qa3 Re8 16.e3 g4 17.Rad1 Rb8 18.Rfe1 Nd7 19.Bb4 e4 20.Ne2 Ne5 21.Qb3 Nf3+ 22.Bxf3 gxf3 23.Nf4 e5 24.dxe6 Bxe6 25.Bc3 Bxc4 26.Qa3 Bf8 27.b4 Rbd8 28.Ba1 Bd6 29.Qc3 Kh7 30.Rd4 Bb5 31.Red1 Be5 32.Rxd8 Bxc3 33.Bxc3 Bd3 34.Rd4 Re7 35.Nxd3 Qb3 36.Nf4 1-0