What is the strongest move for White?

Casual Game, https://itsyourturn.com
Analysis of John Coffey vs. chess724

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

(white to move) 1. Nf3 Nf6 2. d4 d5 3. c4 e6 4. Nc3 c6 5. e3 Bb4 6. Bd3 dxc4 7. Bxc4 O-O 8. O-O Nbd7 9. Re1 Bxc3 10. bxc3 h6 11. e4 Nb6 12. Bd3 Bd7 13. Bc2 a6 14. e5 Nfd5 15. Qd3 f5 16. exf6 e.p. Nxf6 17. Ne5 Nbd5 18. Bxh6 gxh6 19. Qg6+ Kh8 20. Qxh6+ Kg8 21. Rad1 Qe7 22. Rd3 Rf7 23. Rg3+ Rg7 24. Ng6 Qe8 25. c4 Nb6 26. Rg5 Kf7 27. Ne5+ Ke7 28. Rxg7+ Kd8 29. Qxf6+

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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

Mate in 6

Indianapolis open, Chess.com
Xun (1400) vs. Sims (1558)

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

(black to move) 1. c4 e5 2. Nc3 Nf6 3. g3 c6 4. d4 e4 5. Bg2 d5 6. b3 Bb4 7. Bd2 e3 8. fxe3 Ng4 9. Qc2 Qe7 10. a3 Bxc3 11. Qxc3 O-O 12. h3 Nf6 13. O-O-O Qxa3+ 14. Qb2 Qd6 15. g4 a5 16. c5 Qc7 17. Be1 Be6 18. Nf3 Nbd7 19. Rg1 a4 20. bxa4 Rxa4 21. Rd3 Rfa8 22. Kb1 b6 23. Nd2 bxc5 24. dxc5 Nxc5 25. Rc3 Rb8 26. Nb3 d4 27. exd4 Nxb3 28. Bg3 Nd2+ 29. Kc1 Rxb2 30. Kxb2 Ra2+ 31. Kc1 Qa5 32. Rxc6 Nb3+ 33. Kb1 Ra1+ 34. Kb2 Qa2+ 35. Kc3 Qd2#

[ 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 strong advantage

ICC 30 0, Internet Chess Club
Analysis of john2001plus (1853) vs. fiddler (1761)

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

(black to move) 1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 c5 8. Ne2 Nc6 9. Be3 cxd4 10. cxd4 Qa5+ 11. Qd2 e6 12. Qxa5 Nxa5 13. Bd3 b6 14. O-O Bb7 15. Rfc1 Kd7 16. Bd2 Nc6 17. d5 Nd4 18. Nxd4 Bxd4 19. Bb5+ Kd6 20. Bb4+ Bc5 21. Bxc5+ bxc5 22. dxe6 fxe6 23. Rd1+ Ke5 24. f3 Rhd8 25. Kf2 Rd4 26. Ke3 g5 27. g3 Rad8 28. f4+ gxf4+ 29. gxf4+ Kf6 30. e5+ Kf5 31. Bd3+ Be4 32. Be2 Bc2 33. Rf1 Re4+ 34. Kf3 c4 35. Rae1 Rd2 36. a4 c3 37. Bb5 Rxf4+ 38. Ke3 Rxf1 39. Rxf1+ Kxe5

[ 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 (1815) vs. ulfhethinn (1668)

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

(white to move) 1. Nf3 Nf6 2. d4 b5 3. e3 a6 4. c4 b4 5. Bd2 e6 6. Bd3 Bb7 7. O-O a5 8. a3 c5 9. axb4 axb4 10. Rxa8 Bxa8 11. dxc5 Bxc5 12. Qa4 Bxf3 13. gxf3 Nc6 14. Qb5 Qe7 15. Bc1 O-O 16. Nd2 Rb8 17. Qa4 Bb6 18. Qc2 Ne5 19. Be2 Rc8 20. f4 Neg4 21. h3 Nxe3 22. fxe3 Bxe3+ 23. Kh2 d5 24. Qd3 Ba7 25. b3 Qc5 26. Nf3 Ne4 27. Bb2 h6 28. Qd4 Qxd4 29. Bxd4 Bb8 30. Be5 Ba7 31. Bd4 Bb8 32. Be3 Nc3 33. Bd3 Bd6 34. cxd5 Nxd5 35. Bd2 g5 36. Bc4 Nxf4 37. Kh1 Nxh3 38. Nd4 Ra8 39. Nxe6 Ra2 40. Nxg5 hxg5 41. Rxf7 Kh8 42. Rf6 Rxd2 43. Rh6+ Kg7 44. Rxh3

[ 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 advantage

Internet Chess Club, Internet Chess Club
Realityczech (1725) vs. John2001plus (1862)

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. Bd3 dxe4 4. Bxe4 Nf6 5. Bf3 c5 6. Ne2 Nc6 7. Be3 e5 8. dxe5 Nxe5 9. Qxd8+ Kxd8 10. Nbc3 Nxf3+ 11. gxf3 Kc7 12. Nf4 Bf5 13. O-O-O Kc6 14. Nfd5 Nxd5 15. Rxd5 Be6 16. Rd2 Be7 17. Ne4 h6 18. Rhd1 f5 19. Nc3 Rad8 20. Ne2 g5 21. f4 g4 22. Nc3 Bf6 23. Rxd8 Rxd8 24. Rxd8 Bxd8 25. Ne2 Bf6 26. Ng3 a5 27. a3 b5 28. c3 Kd5 29. Kc2 c4 30. Bb6 a4 31. Kd2 Bd7 32. Ke3 b4 33. axb4 Bxc3 34. Ne2 Bxb2 35. Nd4 a3 36. Nc2 Ba4 37. Nxa3 Bc1+ 38. Ke2 Bxa3 39. Bc5 c3 40. Kd3 c2

[ 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 33. Ba5.
Click here for 35. Kd2.