What is the best line for White?

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Analysis of john2001plus (1846) vs. jandrades (1767)

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

(white to move) 1. Nf3 d5 2. d4 c6 3. c4 Nf6 4. e3 e6 5. Nc3 Bd6 6. Bd3 O-O 7. O-O Nbd7 8. e4 dxe4 9. Nxe4 Nxe4 10. Bxe4 h6 11. Re1 Nf6 12. Bc2 Bc7 13. Ne5 Bxe5 14. Rxe5 Nd7 15. Qd3 Nf6 16. Bxh6 g6 17. Qg3 Qxd4 18. Bxg6 Kh8 19. Bg7+ Kxg7 20. Be4+ Kh8 21. Qh4+ Nh5 22. Rxh5+ Kg8 23. Rg5+ Qg7 24. Qh7#

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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 best line for Black?

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Analysis of GeorgeZolotariov (1571) vs. john2001plus (1853)

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

(black to move) 1. Nf3 e6 2. g3 d5 3. Bg2 c5 4. d3 Nc6 5. O-O Nf6 6. Nbd2 Be7 7. e4 dxe4 8. Nxe4 Nxe4 9. dxe4 Qxd1 10. Rxd1 O-O 11. c3 Rd8 12. Bf4 b6 13. e5 Bb7 14. Nd2 Rd7 15. Nc4 Rad8 16. Nd6 Ba8 17. h4 f6 18. exf6 gxf6 19. b4 cxb4 20. cxb4 Nxb4 21. Bxa8 Rxa8 22. Nb5 Rad8

[ 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

Black to play for a winning position.

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Analysis of fequalma (1852) vs. john2001plus (1887)

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. e5 c5 4. c3 Nc6 5. Nf3 Qb6 6. a3 f6 7. b4 fxe5 8. dxe5 Bd7 9. Bd3 a5 10. b5 Nce7 11. a4 Ng6 12. O-O Ng8e7 13. Qe2 c4 14. Bc2 Nf5 15. Bxf5 exf5 16. Be3 Bc5 17. Nd4 f4 18. Bc1 Bxd4 19. cxd4 O-O 20. Qd1 f3 21. g3 Qe6 22. Ra3 Qh3 23. Rxf3 Bg4 24. Rxf8+ Rxf8 25. f3 Nh4 26. gxh4 Bxf3 27. Rxf3 Rxf3

[ 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

Black to play and draw.

ICC tourney 1282 (12 3), Internet Chess Club
Analysis of BIRDSMAN (1131) vs. yoshi (1724)

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

(black to move) 1. d4 e6 2. Nf3 Nf6 3. e3 c5 4. c3 d5 5. Bd3 Nc6 6. Nbd2 Qc7 7. O-O Bd6 8. dxc5 Bxc5 9. e4 dxe4 10. Nxe4 Nxe4 11. Bxe4 O-O 12. Bxh7+ Kxh7 13. Ng5+ Kg6 14. Qg4 f5 15. Qh4 Bd6 16. Rd1 Bd7 17. Qh7+ Kf6 18. Qh4 Kg6 CHECK!

[ 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