What is the strongest defense for Black?

ICC tourney 1704 (12 3), Internet Chess Club
Analysis of SuperPuzzler (1665) vs. john2001plus (1747)

1 2 3 4 5 6 7 8 h g f e d c b a -1

(black to move) 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. Nxd4 Nc6 6. Nxc6 bxc6 7. Bd3 Nf6 8. O-O Be7 9. c3 O-O 10. Qc2 e5 11. Re1 Qc7 12. exd5 cxd5 13. c4 d4 14. Nf3 Bd6 15. Bg5 e4 16. Bxe4 Nxe4 17. Rxe4 Bb7 18. Rh4 f5 19. Nxd4 Qf7 20. c5 h6 21. Be3 Be7 22. Rf4 Be4 23. Rxe4 fxe4

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Options:
	- allow legal moves only;
	- use short algebraic notation;
movement/animation speed: (slow) (fast)
	- show legal moves;

 

Pawn promotion:
	- Queen
	- Rook
	- Bishop
	- Knight

What is the strongest continuation for Black?

ICC tourney 1692 (12 3), Internet Chess Club
SuperPuzzler (1634) vs. john2001plus (1727)

1 2 3 4 5 6 7 8 h g f e d c b a 0

(black to move) 1. e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 cxd4 5. Nxd4 Nc6 6. Nxc6 bxc6 7. exd5 cxd5 8. Bd3 Bd6 9. O-O Nf6 10. Nf3 O-O 11. Re1 Rb8 12. c3 Ne4 13. Qc2 f5 14. c4 Qb6 15. Rb1 Ba6 16. Be3 Bc5 17. cxd5 Bxd3 18. Qxd3 Nxf2 19. Qe2 Ng4 20. Bxc5 Qxc5+ 21. Kf1 exd5 22. h3 Rfe8 23. Qd2 Ne3+ 24. Kf2 Nc4+ 25. Qd4 Qxd4+ 26. Nxd4 Rxe1 27. Kxe1 Rxb2 28. Rxb2 Nxb2 29. Nxf5 Nd3+ 30. Ke2 Nb4 31. a3 g6 32. Ne3 Nc6 33. Nxd5 Kf7 34. Kd3 Ke6 35. Nc3 Ke5 36. Ke3 Nd4 37. a4 a5 38. Kd3 Nf5 39. Nb5 Kd5 40. Nc3+ Kc5 41. Na2 Nh4 42. g4 Nf3 43. Kc3 Ng5 44. h4 Ne4+ 45. Kc2 Kd4 46. g5 Nc5 47. Nc3 Ke5 48. Kd2 Kf4 49. Nd5+ Kg4 50. Nf6+ Kxh4 51. Nxh7 Nxa4

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Options:
	- allow legal moves only;
	- use short algebraic notation;
movement/animation speed: (slow) (fast)
	- show legal moves;

 

Pawn promotion:
	- Queen
	- Rook
	- Bishop
	- Knight

What is the strongest continuation for Black?

ICC tourney 1692 (12 3), Internet Chess Club
Analysis of drabmolc (1373) vs. john2001plus (1716)

1 2 3 4 5 6 7 8 h g f e d c b a 0

(black to move) 1. d4 Nf6 2. e3 d5 3. Nd2 c5 4. c3 Nbd7 5. Bd3 Qc7 6. f4 Nb6 7. Ngf3 Bg4 8. O-O e6 9. Qe1 cxd4 10. cxd4 Rc8 11. Ne5 Bf5 12. Bxf5 exf5 13. Ndf3 Bd6 14. Bd2 Ne4 15. Rc1 Qd8 16. Rxc8 Qxc8 17. Bb4 f6 18. Bxd6 Nxd6 19. Qg3 O-O 20. Nd3 Qc4 21. Nde1 Ne4 22. Qh3 Qe2 23. Qxf5 Qxe3+ 24. Kh1 Re8 25. g3 g6 26. Qh3 Nf2+

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Options:
	- allow legal moves only;
	- use short algebraic notation;
movement/animation speed: (slow) (fast)
	- show legal moves;

 

Pawn promotion:
	- Queen
	- Rook
	- Bishop
	- Knight

Black to play

ICC tourney 1692 (12 3), Internet Chess Club
Analysis of IAlwaysWin (1584) vs. john2001plus (1735)

1 2 3 4 5 6 7 8 h g f e d c b a +1

(black to move) 1. Nf3 Nf6 2. e3 d5 3. c4 e6 4. b3 Be7 5. Nc3 O-O 6. Bb2 c5 7. cxd5 exd5 8. d4 Nbd7 9. Be2 Re8 10. O-O b6 11. Rc1 Bb7 12. Ne1 cxd4 13. exd4 Rc8 14. Nd3 Bd6 15. Bf3 Ne4 16. Re1 Ndf6 17. Nb5 Bb8 18. Rxc8 Qxc8 19. Ne5 a6 20. Na3 Qf5 21. Qd3 Nd6 22. Qxf5 Nxf5 23. Rc1 Nxd4 24. Bxd4 Bxe5 25. Nc2 Bxd4 26. Nxd4 Rc8 27. Re1 Kf8 28. g3 Ne4 29. Nf5 Rc2 30. Bxe4 dxe4 31. Nd6 Bd5 32. Rd1 e3 33. fxe3 Rg2+ 34. Kf1 Bf3 35. Rd4 Rxh2 36. Nc8 f6 37. Nxb6 Rxa2 38. b4 Be2+ 39. Ke1 Bb5 40. Nd5 Ra1+ 41. Kf2 Rf1+ 42. Kg2 Rc1 43. e4 Kf7 44. Kf2 Rc2+ 45. Ke3 Rg2 46. Kf3 Rc2 47. Ne3 Rc3 48. Kf2 Rd3 49. Rxd3 Bxd3 50. Kf3 Ke6 51. Nd5 Bc4 52. Ne3 Bd3 53. Nd1 Ke5 54. Nf2 Bc2 55. Ke3 h5

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Options:
	- allow legal moves only;
	- use short algebraic notation;
movement/animation speed: (slow) (fast)
	- show legal moves;

 

Pawn promotion:
	- Queen
	- Rook
	- Bishop
	- Knight

What is the strongest continuation for Black?

ICC tourney 1692 (12 3), Internet Chess Club
Analysis of IAlwaysWin (1584) vs. john2001plus (1735)

1 2 3 4 5 6 7 8 h g f e d c b a +1

(black to move) 1. Nf3 Nf6 2. e3 d5 3. c4 e6 4. b3 Be7 5. Nc3 O-O 6. Bb2 c5 7. cxd5 exd5 8. d4 Nbd7 9. Be2 Re8 10. O-O b6 11. Rc1 Bb7 12. Ne1 cxd4 13. exd4 Rc8 14. Nd3 Bd6 15. Bf3 Ne4 16. Re1 Ndf6 17. Nb5 Bb8 18. Rxc8 Qxc8 19. Ne5 a6 20. Na3 Qf5 21. Qd3 Nd6 22. Qxf5 Nxf5 23. Rc1 Nxd4 24. Bxd4 Bxe5 25. Nc2 Bxd4 26. Nxd4 Rc8 27. Re1 Kf8 28. g3 Ne4 29. Nf5 Rc2 30. Bxe4 dxe4 31. Nd6 Bd5 32. Rd1 e3 33. fxe3 Rg2+ 34. Kf1 Bf3 35. Rd4 Rxh2 36. Nc8 f6 37. Nxb6 Rxa2 38. b4 Be2+ 39. Ke1 Bb5 40. Nd5 Ra1+ 41. Kf2 Rf1+ 42. Kg2 Rc1 43. e4 Kf7 44. Kf2 Rc2+ 45. Ke3 Rg2 46. Kf3 Rc2 47. Ne3 Rc3 48. Kf2 Rd3 49. Rxd3 Bxd3 50. Kf3 Ke6 51. Nd5 Bc4 52. Ne3 Bb3 53. Ke2 Ke5 54. Kd3 g6 55. Ng4+ Ke6 56. Nf2 h5 57. Kd4 Kd6 58. Nd3 Bd1 59. Nf4 g5 60. Nd3 Kc6 61. Kc3 Kb5 62. Nf2 Bf3 63. Kb3 h4 64. gxh4 gxh4 65. Kc3 Bg2 66. Kb3 h3 67. Ng4 Bxe4

[ Flip the board | Reset | Options… ] Play chess online

 

Options:
	- allow legal moves only;
	- use short algebraic notation;
movement/animation speed: (slow) (fast)
	- show legal moves;

 

Pawn promotion:
	- Queen
	- Rook
	- Bishop
	- Knight

White to play

Live Chess, Chess.com
Analysis of john2001plus (1884) vs. learnychess (1512)

8 7 6 5 4 3 2 1 a b c d e f g h 0

(white to move) 1. Nf3 b6 2. d4 c5 3. e4 Bb7 4. Bd3 e6 5. c3 Nf6 6. Qe2 d5 7. Nbd2 cxd4 8. cxd4 Bb4 9. e5 Ne4 10. O-O Nxd2 11. Bxd2 Bxd2 12. Nxd2 Nc6 13. Rac1 Nxd4 14. Qg4 Nc6 15. Qxg7 Rf8 16. Nf3 Kd7 17. Bb5 a6 18. Bxc6+ Bxc6 19. Ng5 Qe7 20. Nxh7 Rfc8 21. Rc2 Kc7 22. Ng5 Kd7 23. Rfc1 Rg8 24. Qh7 Qxg5 25. Qxf7+ Qe7 26. Qxe7+ Kxe7 27. Rxc6

[ Flip the board | Reset | Options… ] Play chess online

 

Options:
	- allow legal moves only;
	- use short algebraic notation;
movement/animation speed: (slow) (fast)
	- show legal moves;

 

Pawn promotion:
	- Queen
	- Rook
	- Bishop
	- Knight

White to play

Live Chess, Chess.com
Analysis of john2001plus (1884) vs. learnychess (1512)

8 7 6 5 4 3 2 1 a b c d e f g h 0

(white to move) 1. Nf3 b6 2. d4 c5 3. e4 Bb7 4. Bd3 e6 5. c3 Nf6 6. Qe2 d5 7. Nbd2 cxd4 8. cxd4 Bb4 9. e5 Ne4 10. O-O Nxd2 11. Bxd2 Bxd2 12. Nxd2 Nc6 13. Rac1 Nxd4 14. Qg4 Nc6 15. Qxg7 Rf8 16. Nf3 Kd7 17. Ng5 h6 18. Nh7 Rc8 19. f4 Kc7 20. Qxf8 Qxf8 21. Nxf8 Rxf8 22. Bb5 Kd7 23. f5 exf5 24. Rxf5 Ke6 25. Bxc6 Kxf5 26. Bxb7 Kxe5 27. Re1+ Kf6 28. Bxd5

[ Flip the board | Reset | Options… ] Play chess online

 

Options:
	- allow legal moves only;
	- use short algebraic notation;
movement/animation speed: (slow) (fast)
	- show legal moves;

 

Pawn promotion:
	- Queen
	- Rook
	- Bishop
	- Knight

White to play

Live Chess, Chess.com
Analysis of john2001plus (1884) vs. learnychess (1512)

8 7 6 5 4 3 2 1 a b c d e f g h 0

(white to move) 1. Nf3 b6 2. d4 c5 3. e4 Bb7 4. Bd3 e6 5. c3 Nf6 6. Qe2 d5 7. Nbd2 cxd4 8. cxd4 Bb4 9. e5 Ne4 10. O-O Nxd2 11. Bxd2 Bxd2 12. Nxd2 Nc6 13. Rac1 Nxd4 14. Qg4 Nc6 15. Qxg7 Rf8 16. Nf3 Kd7 17. Ng5 h6 18. Nh7 Rh8 19. Nf6+ Ke7 20. Bb5 Nxe5 21. f4 Nc4 22. f5

[ Flip the board | Reset | Options… ] Play chess online

 

Options:
	- allow legal moves only;
	- use short algebraic notation;
movement/animation speed: (slow) (fast)
	- show legal moves;

 

Pawn promotion:
	- Queen
	- Rook
	- Bishop
	- Knight

White to play

Live Chess, Chess.com
Analysis of john2001plus (1884) vs. learnychess (1512)

8 7 6 5 4 3 2 1 a b c d e f g h +1

(white to move) 1. Nf3 b6 2. d4 c5 3. e4 Bb7 4. Bd3 e6 5. c3 Nf6 6. Qe2 d5 7. Nbd2 cxd4 8. cxd4 Bb4 9. e5 Ne4 10. O-O Nxd2 11. Bxd2 Bxd2 12. Nxd2 Nc6 13. Rac1 Nxd4 14. Qg4 Nc6 15. Qxg7 Rf8 16. Nf3 Kd7 17. Ng5 h6 18. Nh7 Rh8 19. Qxf7+ Qe7 20. Nf6+ Kd8 21. Qh5 Rf8 22. f4 Qg7 23. Qh4 Ne7 24. Nh5 Qf7 25. f5 Rc8 26. Nf4 Rxc1 27. Rxc1 Bc8 28. Ng6 Re8 29. f6 Bb7 30. fxe7+ Rxe7 31. Rf1 Qg7 32. Rf8+ Kd7 33. Qb4 Qxf8 34. Nxf8+ Ke8 35. Ng6 Rh7 36. Qd6 Bc8 37. Bb5+ Kf7 38. Qe7+ Kxg6 39. Qf6+ Kh5 40. Be2#

[ Flip the board | Reset | Options… ] Play chess online

 

Options:
	- allow legal moves only;
	- use short algebraic notation;
movement/animation speed: (slow) (fast)
	- show legal moves;

 

Pawn promotion:
	- Queen
	- Rook
	- Bishop
	- Knight

Click here for 24... Qh8.
Click here for 29... Nxg6.
Click here for 30... Kd7.

White to play

Live Chess, Chess.com
Analysis of john2001plus (1884) vs. learnychess (1512)

8 7 6 5 4 3 2 1 a b c d e f g h +2

(white to move) 1. Nf3 b6 2. d4 c5 3. e4 Bb7 4. Bd3 e6 5. c3 Nf6 6. Qe2 d5 7. Nbd2 cxd4 8. cxd4 Bb4 9. e5 Ne4 10. O-O Nxd2 11. Bxd2 Bxd2 12. Nxd2 Nc6 13. Rac1 Nxd4 14. Qg4 Nc6 15. Qxg7 Rf8 16. Nf3 Kd7 17. Ng5 h6 18. Nh7 Rh8 19. Qxf7+ Qe7 20. Nf6+ Kd8 21. Qh5 Rf8 22. f4 Qg7 23. Qh4 Ne7 24. Rf3 Rc8 25. Rxc8+ Kxc8 26. Rg3 Qf7 27. Qxh6 Rd8 28. Rg7 Qf8 29. Nh7 Qe8 30. Qxe6+ Kb8 31. Qxe7

[ Flip the board | Reset | Options… ] Play chess online

 

Options:
	- allow legal moves only;
	- use short algebraic notation;
movement/animation speed: (slow) (fast)
	- show legal moves;

 

Pawn promotion:
	- Queen
	- Rook
	- Bishop
	- Knight