SICILIAN DEFENSE 1. E4 C5 2. NF3 NC6 - Search

  
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Here are 100 results for 1. e4 c5 2. Nf3 Nc6 in the games.


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There are at least 5 results for 1. e4 c5 2. Nf3 Nc6 in the forum.


Scott Ligon    (2025-03-29 15:42:08)
Stockfish unbeatable at modest settings?

I played one last game using the 10 million node strategy against Pineda. The game ended in a draw, but I had to deviate from the 10 million node strategy at the end to avoid losing. I thought the finish was interesting.

https://ficgs.com/user_page.php?page=viewer&game=147951

The key position came after black's 56th move, and up to that point with black I am just following the 10 million node strategy. These are the moves:

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Bxc6 dxc6 6. d3 a5 7. h3 b6 8. a3 Nf6 9. Qe2 O-O 10. Nc3 Ne8 11. e5 Nc7 12. Qe4 Ne6 13. Re1 Qd7 14. Qh4 f6 15. Be3 h6 16. Qg3 g5 17. h4 Qd8 18. Bd2 b5 19. b3 Kh7 20. Rac1 Kg8 21. Rcd1 Ra7 22. Rb1 Ra8 23. Rbc1 Ra7 24. Rcd1 Rb7 25. Bc1 Ra7 26. a4 b4 27. Ne2 Qe8 28. Bb2 Qf7 29. Nd2 Qh5 30. hxg5 fxg5 31. Qe3 Rd7 32. Nc4 Rdd8 33. Ng3 Qg6 34. Nxa5 h5 35. Qe4 Qe8 36. Ne2 h4 37. Rf1 Nf4 38. f3 Be6 39. Nxf4 Rxf4 40. Qe2 g4 41. Bc1 gxf3 42. Rxf3 Rg4 43. Rdf1 Rg6 44. Nc4 Bg4 45. Be3 Rd5 46. a5 Bxf3 47. Rxf3 Bxe5 48. Nb6 Rd8 49. a6 Re6 50. a7 Bc7 51. a8=Q Rxa8 52. Nxa8 Qxa8 53. Rf1 Qe8 54. Qf3 Bd6 55. Bg5 Kg7 56. Bxh4 Be5

I ran a width 6 / depth 55 search with Stockfish 17 on the position after black's 56th move, and the top 5 moves for white along with their eval scores were:

57. Re1
+ (0.39)

57. Qf5
+ (0.37)

57. Qg4+
+ (0.32)

57. Bg3
+ (0.25)

57. Qh3
+ (0.01)

Based on that, you might think white should only consider the top 4 moves. But if we look at this from the point of view of exploiting the 10 million node strategy, here are the evaluations of those top 5 moves after the 10 million node strategy response:

57. Re1 Bd4+
+ (0.52)

57. Qf5 Bd4+
+ (0.54)

57. Qg4+ Qg6
+ (0.42)

57. Bg3 Bc3
+ (0.27)

57. Qh3 Rg6
+ (1.65)

So presumably using that logic, my opponent played Qh3 where the 10 million node strategy would require me to respond with Rg6, which loses the game. Qh3 doesn't stand out at all unless you're trying to exploit the 10 million node strategy. The actual game ended with 57. Qh3 Bd4+ and we agreed to a draw.


Scott Ligon    (2025-02-17 04:20:15)
Stockfish unbeatable at modest settings?

Here are three lines I analyzed with Stockfish. I think black should be able to hold the draw in all of them, but the 10 million node strategy makes some mistakes. Notably 54. Qf3 Bd6 is bad and black should have played Bg3 there, but apparently not bad enough to lose unless further mistakes are made. Anyway these are the lines I looked at.

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Bxc6 dxc6 6. d3 a5 7. h3 b6 8. a3 Nf6 9. Qe2 O-O 10. Nc3 Ne8 11. e5 Nc7 12. Qe4 Ne6 13. Re1 Qd7 14. Qh4 f6 15. Be3 h6 16. Qg3 g5 17. h4 Qd8 18. Bd2 b5 19. b3 Kh7 20. Rac1 Kg8 21. Rcd1 Ra7 22. Rb1 Ra8 23. Rbc1 Ra7 24. Rcd1 Rb7 25. Bc1 Ra7 26. a4 b4 27. Ne2 Qe8 28. Bb2 Qf7 29. Nd2 Qh5 30. hxg5 fxg5 31. Qe3 Rd7 32. Nc4 Rdd8 33. Ng3 Qg6 34. Nxa5 h5 35. Qe4 Qe8 36. Ne2 h4 37. Rf1 Nf4 38. f3 Be6 39. Nxf4 Rxf4 40. Qe2 g4 41. Bc1 gxf3 42. Rxf3 Rg4 43. Rdf1 Rg6 44. Nc4 Bg4 45. Be3 Rd5 46. a5 Bxf3 47. Rxf3 Bxe5 48. Nb6 Rd8 49. a6 Re6 50. a7 Bc7 51. a8=Q Rxa8 52. Nxa8 Qxa8 53. Rf1 Qe8 54. Qf3 Bd6 55. Bg5 Kg7 56. Bxh4 Be5

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Bxc6 dxc6 6. d3 a5 7. h3 b6 8. a3 Nf6 9. Qe2 O-O 10. Nc3 Ne8 11. e5 Nc7 12. Qe4 Ne6 13. Re1 Qd7 14. Qh4 f6 15. Be3 h6 16. Qg3 g5 17. h4 Qd8 18. Bd2 b5 19. b3 Kh7 20. Rac1 Kg8 21. Rcd1 Ra7 22. Rb1 Ra8 23. Rbc1 Ra7 24. Rcd1 Rb7 25. Bc1 Ra7 26. a4 b4 27. Ne2 Qe8 28. Bb2 Qf7 29. Nd2 Qh5 30. hxg5 fxg5 31. Qe3 Rd7 32. Nc4 Rdd8 33. Ng3 Qg6 34. Nxa5 h5 35. Qe4 Qe8 36. Ne2 h4 37. Rf1 Nf4 38. f3 Be6 39. Nxf4 Rxf4 40. Qe2 g4 41. Bc1 gxf3 42. Rxf3 Rg4 43. Rdf1 Rg6 44. Nc4 Bg4 45. Be3 Rd5 46. a5 Bxf3 47. Rxf3 Bxe5 48. Nb6 Rd8 49. a6 Re6 50. a7 Bc7 51. a8=Q Rxa8 52. Nxa8 Qxa8 53. Rf1 Qe8 54. Qf3 Bd6 55. Bg5 Kg7 56. Qf5 Re5 57. Qf4 Re6

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Bxc6 dxc6 6. d3 a5 7. h3 b6 8. a3 Nf6 9. Qe2 O-O 10. Nc3 Ne8 11. e5 Nc7 12. Qe4 Ne6 13. Re1 Qd7 14. Qh4 f6 15. Be3 h6 16. Qg3 g5 17. h4 Qd8 18. Bd2 b5 19. b3 Kh7 20. Rac1 Kg8 21. Rcd1 Ra7 22. Rb1 Ra8 23. Rbc1 Ra7 24. Rcd1 Rb7 25. Bc1 Ra7 26. a4 b4 27. Ne2 Qe8 28. Bb2 Qf7 29. Nd2 Qh5 30. hxg5 fxg5 31. Qe3 Rd7 32. Nc4 Rdd8 33. Ng3 Qg6 34. Nxa5 h5 35. Qe4 Qe8 36. Ne2 h4 37. Rf1 Nf4 38. f3 Be6 39. Nxf4 Rxf4 40. Qe2 g4 41. Bc1 gxf3 42. Rxf3 Rg4 43. Rdf1 Rg6 44. Nc4 Bg4 45. Be3 Rd5 46. a5 Bxf3 47. Rxf3 Bxe5 48. Nb6 Rd8 49. a6 Re6 50. a7 Bc7 51. a8=Q Rxa8 52. Nxa8 Qxa8 53. Rf1 Qe8 54. Qf3 Bd6 55. Qf5 Rf6 56. Qg5+ Kh7 57. Qxh4+ Kg7


Scott Ligon    (2025-02-09 21:47:17)
Stockfish unbeatable at modest settings?

My remaining games where I'm using the 10 million node strategy as black have gone past the point where they could transpose into white's winning lines against the 10 million node strategy (at least the two winning lines that I managed to find), so I will post them now. I found both lines while analyzing games that have now finished.

Game 147097: Kruse vs Ligon
https://ficgs.com/game_147097.html

Due to a repetition, the position after black's move 22 in the game was the same as the position after black's move 20 in the following line where white wins.

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Re1 e5 6. Bxc6 dxc6 7. a4 Nh6 8. d3 O-O 9. Be3 Qd6 10. Na3 f6 11. Nc4 Qe7 12. a5 Ng4 13. Bd2 Nh6 14. Qe2 Be6 15. h4 Ng4 16. Ra4 Rf7 17. Rb1 Bf8 18. h5 Qd7 19. b3 Re8 20. Re1 Rg7 21. Rb1 g5 22. Ne1 Nh6 23. Ne3 Qc8 24. g3 Bd6 25. N1g2 Bf8 26. f3 Qb8 27. Rba1 Nf7 28. Ng4 Qd8 29. Qf2 Nd6 30. Be3 b5 31. axb6 axb6 32. b4 Bxg4 33. fxg4 cxb4 34. Rxb4 b5 35. Rbb1 Qd7 36. Qf3 Rf7 37. Kh2 Rb8 38. Ba7 Rc8 39. Bf2 b4 40. Be1 c5 41. Ne3 Nb5 42. Nd5 Qc6 43. Bd2 Nc7 44. Ra7 c4 45. Rba1 Bc5 46. Nxb4 Bxb4 47. Bxb4 cxd3 48. cxd3 Rb8 49. Be1 Rb2+ 50. Bf2 Ne6 51. Ra8+ Rf8 52. Rxf8+ Nxf8 53. h6 Kf7 54. Kh3 Rb3 55. Ra2 Ke8 56. Ra7

Game 147106: Pineda vs Ligon
https://ficgs.com/game_147106.html

First 36 moves are the same as the following line where white wins. Black got the win only because white made a mistake in entering the final move, otherwise we were headed for a draw.

1. e4 c5 2. Nf3 Nc6 3. Bb5 g6 4. O-O Bg7 5. Bxc6 dxc6 6. d3 a5 7. h3 b6 8. a3 Nf6 9. Qe2 O-O 10. Nc3 Ne8 11. e5 Nc7 12. Qe4 Ne6 13. Re1 Qd7 14. Qh4 f6 15. Be3 h6 16. Qg3 g5 17. h4 Qd8 18. Bd2 b5 19. b3 Kh7 20. Rac1 Kg8 21. Rcd1 Ra7 22. Rb1 Ra8 23. Rbc1 Ra7 24. Rcd1 Rb7 25. Bc1 Ra7 26. a4 b4 27. Ne2 Qe8 28. Bb2 Qf7 29. Nd2 Qh5 30. hxg5 fxg5 31. Qe3 Rd7 32. Nc4 Rdd8 33. Ng3 Qg6 34. Nxa5 h5 35. Qe4 Qe8 36. Ne2 h4 37. f3 Nd4 38. Rf1 Bf5 39. Qe3 Ne6 40. Bc1 Qg6 41. Nxc6 Rd7 42. Na5 Rf7 43. Rde1 Rd8 44. Nc4 Rdf8 45. Nb6 h3 46. Rf2 hxg2 47. Rxg2 Qh5 48. Rh2 Bh3 49. f4 g4 50. Qg3 Ng5 51. Rf1 Bxe5 52. Nd7 Bc7 53. Nxf8 Kxf8 54. Kh1 Qh6 55. Rff2


Scott Ligon    (2025-01-17 14:44:57)
Stockfish unbeatable at modest settings?

To be clear, I still don't know if it can be beaten at 10 million nodes. Someone might eventually find a line with white that beats Stockfish 17 at these settings. But the longer the experiment goes without anyone finding such a line, the more confident I will be that it can't be beaten.

Here is a line that beats Stockfish 17 at 5 million nodes.

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 e5 6. Ndb5 d6 7. Nd5 Nxd5 8. exd5 Nb8 9. a4 Be7 10. Bd2 O-O 11. a5 f5 12. Be2 Bd7 13. O-O Be8 14. Ra2 h6 15. Kh1 Bg5 16. Be1 a6 17. Na3 Nd7 18. Nc4 Qc7 19. Bb4 Nc5 20. Ra3 Bb5 21. Nb6 Rad8 22. c4 Be8 23. Be1 Nd7 24. Nxd7 Qxd7 25. b4 Rc8 26. f3 Bh5 27. Bf2 e4 28. c5 dxc5 29. Bxc5 Rfe8 30. d6 Kh8 31. f4 Bxe2 32. Qxe2 Bf6 33. Qh5 Rf8 34. Rd1 Kh7 35. Rg3 Bd8 36. Rd5 Rf6 37. Qd1 Rf7 38. Re3 g5 39. Qh5 gxf4 40. Re1 e3 41. Rf1 Rf8 42. Rd4 Bf6 43. Rdxf4 Bg5 44. R4f3 Qf7 45. Qxf7+ Rxf7 46. Bxe3 Bxe3 47. Rxe3 Kg7 48. g3 Rc4 49. Rf4 Rc1+ 50. Kg2 Rd1 51. Re7 Rd2+ 52. Rf2 Rxd6 53. Rxf7+ Kxf7 54. Rxf5+ Kg6 55. Rc5 Rd2+ 56. Kf3 Rb2 57. Rc4


Thibault de Vassal    (2012-12-06 11:28:11)
The very unofficial World Championship

After 4 games Houdini 3 leads by 3.5-0.5

Rybka Cluster - Houdini 3 (Game 3 - 2012/12/04): 1/2-1/2 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 g6 5. c4 d6 6. Be2 Nxd4 7. Qxd4 Nf6 8. Nc3 Bg7 9. Be3 O-O 10. Qd2 Qa5 11. f3 Be6 12. Rc1 Rfc8 13. b3 a6 14. Na4 Qxd2+ 15. Kxd2 Nd7 16. g4 Re8 17. h4 h6 18. Nc3 Nc5 19. b4 Nd7 20. Nd5 a5 21. b5 Rac8 22. f4 Bf6 23. b6 Bb2 24. Rc2 Bxd5 25. exd5 Ba3 26. h5 e5 27. hxg6 exf4 28. Bxf4 Re4 29. gxf7+ Kxf7 30. Bxh6 Nxb6 31. Kd3 Rexc4 32. Rxc4 Nxc4 33. Bf4 Kg7 34. Ke4 Re8+ 35. Kf3 Ne5+ 36. Kg3 Rc8 37. Rb1 Rc3+ 38. Kh4 Bb4 39. Rc1 Ng6+ 40. Kg5 Nxf4 41. Rxc3 Bxc3 42. Kxf4 a4 43. a3 Bb2 44. Kf5 Bxa3 45. Bb5 Bc1 46. Bxa4 Bd2 47. Be8 Bc3 48. g5 Bd4 49. Kg4 Be5 50. Bb5 Kg6 1/2-1/2.

Houdini 3 - Rybka Cluster (Game 4 - 2012/12/05): 1-0 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 e5 5. Nb5 d6 6. N1c3 Nf6 7. Bg5 a6 8. Na3 Be6 9. Nc4 Rc8 10. Bxf6 Qxf6 11. Nb6 Rb8 12. Ncd5 Qg6 13. Qd3 Be7 14. Nc7+ Kd8 15. Ncd5 f5 16. Qc3 fxe4 17. O-O-O Bxd5 18. Nxd5 Rc8 19. Kb1 Rf8 20. Qb3 b5 21. Qa3 Qg4 22. f3 exf3 23. Nxe7 Kxe7 24. Qxd6+ Kf7 25. gxf3 Qf5 26. Qd5+ Kf6 27. Bd3 Qe6 28. Qe4 g6 29. h4 Rcd8 30. a3 Rd7 31. h5 g5 32. h6 Nd4 33. Rhg1 Rfd8 34. Qe3 Rg8 35. Rde1 Qd5 36. Rg4 Qc5 37. Rg2 Qd5 38. Qg1 Qf7 39. Qf2 Rd5 40. c3 Ne6 41. Bc2 Nf4 42. Rg3 Rd7 43. Qe3 Qd5 44. Ka1 Re8 45. Rg4 Ne6 46. Bb1 Rc7 47. Ba2 Qc5 48. Qe4 Qd6 49. Rg2 b4 50. axb4 Nf4 51. Bb1 Qd7 52. Rd2 Qa4+ 53. Ba2 Qc6 54. Qc2 Rd7 55. Rxd7 Qxd7 56. Rd1 Qc7 57. Bb1 e4 58. Qa4 Qb8 59. Qd7 Re7 60. Rd6+ Ne6 61. Qc6 Qb5 62. Qxe4 Qe5 63. Qd3 Ra7 64. Rc6 a5 65. b5 Re7 66. b6 a4 67. Qd8 Kf7 68. Qc8 1-0.




There are 1 results for 1. e4 c5 2. Nf3 Nc6 in wikichess.


Thibault de Vassal    (2407)
e4 c5 Nf3 Nc6

This is the second most played line in Sicilian. Reached commonly after 2. ... Nc6, logically the best move. The play is probably easier for Black than in 1.e4 c5 2.Nf3 d6 variation, but it is much harder to win against a same level player who plays Sicilian Sveshnikov. In my opinion, one should use this opening only to obtain a draw against a stronger player, and to save energy.

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Contributors : David Grosdemange, Thibault de Vassal












 
 
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