What is the best line for Black?

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Analysis of krish26 (1597) vs. john2001plus (1797)

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. exd5 exd5 4. Bd3 Nf6 5. Nf3 Bd6 6. h3 Qe7+ 7. Be3 Nbd7 8. c3 Ne4 9. Nbd2 Ndf6 10. Qc2 O-O 11. O-O-O a5 12. Ng5 Bf5 13. Ngxe4 dxe4 14. Bc4 c6 15. a4 Nd5 16. g4 Bg6 17. h4 h6 18. g5 h5 19. Qb3 Nf4 20. Rde1 Rfb8 21. Rhg1 b5 22. axb5 cxb5 23. Bxf4 Bxf4 24. Bd5 a4 25. Qa2 Ra7 26. Kd1 Bxd2 27. Kxd2 Qd6 28. Rh1 Qf4+ 29. Ke2 Qf3+ 30. Kd2 Qd3+ 31. Kc1 e3 32. Re2 Qxe2 33. b4 Qd3 34. fxe3 Rc7 35. c4 bxc4 36. Re1 Rxb4 37. e4 Qc3+ 38. Kd1 Rb2

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Options:
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Pawn promotion:
	- Queen
	- Rook
	- Bishop
	- Knight

What is the fastest way to win?

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Analysis of yoshi (2077) vs. fiddler (1706)

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

(white to move) 1. Nf3 d5 2. d4 Nf6 3. c4 dxc4 4. e3 e6 5. Bxc4 Be7 6. Nc3 O-O 7. O-O c5 8. e4 cxd4 9. Nxd4 Qc7 10. Qe2 a6 11. e5 Nfd7 12. Bxe6 Qxe5 13. Qxe5 Nxe5 14. Bxc8 Rxc8 15. Re1 Bc5 16. Nb3 Nd3 17. Re2 Bxf2+ 18. Rxf2 Nxf2 19. Kxf2 Nc6 20. Bf4 Nb4 21. Rd1 Rd8 22. Bd6 Nc6 23. Na4 b5 24. Nac5 Ne5 25. Nb7 Re8 26. Bxe5 Rxe5 27. Nd4 f6 28. Nc6 Re4 29. Rd7 Rc4 30. Ne7+ Kf8 31. Nd6 Rc2+ 32. Kf3 Rxb2 33. Nef5 Rxa2 34. Rf7+ Kg8 35. Rxg7+ Kf8 36. Rxh7 Kg8 37. Rg7+ Kf8 38. Rf7+ Kg8 39. Ne7+ Kh8 40. Ne4 Ra3+ 41. Kf4 Ra4 42. Kf5 Rxe4 43. Ng6+ Kg8 44. Kxf6 Rf4+ 45. Nxf4 Rf8 46. Rxf8+ Kxf8 47. g4 b4 48. g5 b3 49. g6 b2 50. g7+ Kg8 51. Nd5 Kh7 52. Ne7 b1=Q 53. g8=Q+

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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

White to play and draw.

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Analysis of Troy8 (1988) vs. john2001plus (1854)

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

(white to move) 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 c6 5. Qc2 Bd6 6. d4 O-O 7. Nbd2 Nbd7 8. e4 dxe4 9. Nxe4 Nxe4 10. Qxe4 Nf6 11. Qh4 Qa5+ 12. Bd2 Bb4 13. Qf4 Rd8 14. O-O Bxd2 15. Nxd2 e5 16. dxe5 Qxd2 17. Qxd2 Rxd2 18. exf6 Rxb2 19. Rfe1 Be6 20. fxg7 Bxc4 21. Rab1 Rxb1 22. Rxb1 Bxa2 23. Rxb7 Bd5 24. Bxd5 cxd5 25. Rd7 a5 26. Rxd5 a4 27. Rd2 a3 28. Ra2 Kxg7 29. Kf1 Kf6 30. Ke2 Ke5 31. Kd3 Kd5 32. f3 Kc5 33. Kc3 h5 34. Rc2 a2 35. Kb2+ Kd4 36. Ka1 Ra3 37. f4 h4 38. gxh4 Rh3 39. f5 Rxh4 40. Rxa2 Rh5 41. Ra4+ Ke5 42. Ra5+ Kf4 43. Ra4+ Kxf5 44. Ra5+ Kg4 45. Rxh5 Kxh5 46. Kb1 Kg4 47. Kc2 Kh3 48. Kd3 Kxh2 49. Ke4

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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 and win.

?, ?
Analysis of Troy8 (1988) vs. john2001plus (1854)

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

(black to move) 1. c4 e6 2. g3 d5 3. Bg2 Nf6 4. Nf3 c6 5. Qc2 Bd6 6. d4 O-O 7. Nbd2 Nbd7 8. e4 dxe4 9. Nxe4 Nxe4 10. Qxe4 Nf6 11. Qh4 Qa5+ 12. Bd2 Bb4 13. Qf4 Rd8 14. O-O Bxd2 15. Nxd2 e5 16. dxe5 Qxd2 17. Qxd2 Rxd2 18. exf6 Rxb2 19. Rfe1 Be6 20. fxg7 Bxc4 21. Rab1 Rxb1 22. Rxb1 Bxa2 23. Rxb7 Bd5 24. Bxd5 cxd5 25. Rd7 a5 26. Rxd5 a4 27. Rd2 a3 28. Ra2 Kxg7 29. Kf1 Kf6 30. Ke2 Ke5 31. Kd3 Kd5 32. f3 Kc5 33. Kc3 f5 34. g4 fxg4 35. fxg4 Kd5 36. Kd3 Ke5 37. Ke3 Ra4 38. h3 Re4+ 39. Kf3 Rf4+ 40. Kg3 Ra4 41. Kh4 Kf4 42. Kh5 Kg3 43. h4 Ra6 44. g5 Kf3 45. Ra1 a2 46. Rf1+ Ke4 47. Re1+ Kd5 48. Rd1+ Kc4 49. Rc1+ Kb3 50. Rf1 Rc6 51. Rg1 Kb2 52. Rf1 a1=Q 53. Rxa1 Kxa1 54. Kg4 Rc4+ 55. Kg3 Kb2 56. h5 Kc3 57. g6 hxg6 58. hxg6 Rc6

[ 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 and win.

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Analysis of john2001plus (1847) vs. pkengsoo (1508)

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

(white to move) 1. Nf3 d5 2. d4 c6 3. c4 e6 4. e3 dxc4 5. Bxc4 Nd7 6. Nc3 Nb6 7. Bd3 Nf6 8. O-O Bd7 9. e4 Be7 10. e5 Nfd5 11. Qe2 O-O 12. Qe4 f5 13. exf6 e.p. Nxf6 14. Qe2 Re8 15. Re1 Bd6 16. Ne4 Bc7 17. Bg5 Nbd5 18. Ne5 h6 19. Nxf6+ Nxf6 20. Bxf6 Qxf6 21. Nxd7 Qxd4 22. Rad1 Qh4 23. g3 Qg5 24. h4 Qe7 25. Qe4 g5 26. Qg6+ Qg7 27. Rxe6 Qxg6 28. Rxg6+ Kh7 29. Nf6+ Kh8 30. hxg5 Re7 31. Rxh6+ Kg7 32. Rh7+ Kf8 33. Rh8+

[ 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

What is the best line for White?

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john2001plus (1848) vs. Jahonas (2212)

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

(white to move) 1. Nf3 d5 2. d4 Nf6 3. c4 dxc4 4. e3 e6 5. Bxc4 Bb4+ 6. Nc3 O-O 7. O-O c5 8. dxc5 Bxc5 9. e4 Nc6 10. Bg5 Qxd1 11. Raxd1 Ng4 12. Na4 Be7 13. Bxe7 Nxe7 14. h3 Nf6 15. e5 Nfd5 16. Nc3 Nxc3 17. bxc3 Nc6 18. Rfe1 b6 19. Rd6 Na5 20. Bd3 h6 21. Be4 Bb7 22. Nd4 Rac8 23. Bxb7 Nxb7 24. Rd7 Nc5 25. Rxa7 Nd3 26. Re3 Rxc3 27. Ne2 Rc2 28. Rxd3 Rxe2 29. Rb3 Rc8 30. g4 g5 31. Kg2 b5 32. Rf3 Rf8 33. Rf6 Rxe5 34. Rxh6 Kg7 35. Rh5

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

 

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

 

Pawn promotion:
	- Queen
	- Rook
	- Bishop
	- Knight