What is the fastest way to checkmate?

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john2001plus (1774) vs. canary2016 (1588)

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

(white to move) 1. Nf3 d5 2. d4 Bf5 3. c4 e6 4. Nc3 Nf6 5. Qb3 b6 6. cxd5 exd5 7. Ne5 Bd6 8. e4 Nxe4 9. Nxe4 Bxe4 10. Bb5+ Kf8 11. f3 Bxe5 12. dxe5 Bg6 13. O-O c6 14. Bd3 Bxd3 15. Qxd3 Nd7 16. Re1 Qe7 17. Qc3 Qc5+ 18. Qxc5+ Nxc5 19. Be3 Nd3 20. Re2 Nxe5 21. Rc1 f6 22. f4 Nc4 23. b3 Nxe3 24. Rxe3 Rc8 25. b4 Kf7 26. Ra3 Rc7 27. Rd3 Rhc8 28. f5 g6 29. g4 g5 30. a4 h6 31. b5 cxb5 32. Rxc7+ Rxc7 33. axb5 Rc5 34. Rb3 d4 35. Kf2 Ke7 36. Rb4 d3 37. Ke3 Rd5 38. Kd2 Kd6 39. Rc4 Rc5 40. Kxd3 Rxc4 41. Kxc4 Ke5 42. h3 Kf4 43. Kd5 Kg3 44. Ke6 Kxh3 45. Kxf6 Kxg4 46. Kg6 h5 47. f6 h4 48. f7 h3 49. f8=Q h2 50. Qh8 Kg3 51. Kxg5 Kg2 52. Qb2+ Kg1 53. Qc1+ Kg2 54. Qd2+ Kg1 55. Qe1+ Kg2 56. Qe2+ Kg1 57. Kg4 h1=Q 58. Kg3

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What is the best continuation for Black?

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Analysis of SuperSam1 (1106) vs. john2001plus (1844)

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

(black to move) 1. e4 e6 2. Nf3 d5 3. exd5 exd5 4. d4 Nf6 5. Qe2+ Be6 6. Bg5 h6 7. Bxf6 Qxf6 8. Nc3 c6 9. O-O-O Bd6 10. Re1 O-O 11. h3 Nd7 12. g3 Rfe8 13. Ne5 Bf5 14. Nxd7 Bxd7 15. Qd1 Qxf2 16. Rxe8+ Rxe8 17. Bd3 Bxg3 18. Qf1 Bf4+ 19. Kb1 Qxf1+ 20. Rxf1 Bxh3

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Pawn promotion:
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What is the best continuation for Black?

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Analysis of Jay_Roy_Hall (1551) vs. john2001plus (1850)

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. exd5 exd5 4. Nf3 Nf6 5. Be2 Bd6 6. O-O O-O 7. Nc3 c6 8. Re1 Re8 9. Bd3 Rxe1+ 10. Qxe1 Bg4 11. Ne5 Be6 12. Bg5 h6 13. Bh4 g5 14. Bg3 c5 15. dxc5 Bxc5 16. Na4 Bd6 17. Qe3 Nc6 18. Nxc6 bxc6 19. Bxd6 Qxd6 20. Qc5 Qf4 21. Nc3 Rb8 22. Rb1 Rxb2 23. Rf1 Rb6 24. Qa5 Qc7 25. Na4 Rb7 26. Qxc7 Rxc7 27. Nc5 Bc8 28. Rb1 Nd7 29. Nxd7 Bxd7 30. f3 c5 31. Be2 Bf5 32. Bd3 Bxd3 33. cxd3 Kg7 34. Kf2 Kf6 35. g3 Ke5 36. Ke3 Kd6 37. f4 g4 38. Rb2 Kc6 39. f5 f6 40. Kf4 h5 41. Re2 Rd7 42. Re6+ Rd6 43. Re7 Kb6 44. Rh7 c4 45. dxc4 dxc4 46. Rh8 c3 47. Rc8 Rc6 48. Rb8+ Ka5 49. Rb1 c2 50. Rc1 Kb4 51. Ke3 Kc3 52. a4 Rd6 53. Ke2 Rd2+ 54. Ke3 Rd1 CHECK!

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Black to play and win.

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Jay_Roy_Hall (1551) vs. john2001plus (1850)

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. exd5 exd5 4. Nf3 Nf6 5. Be2 Bd6 6. O-O O-O 7. Nc3 c6 8. Re1 Re8 9. Bd3 Rxe1+ 10. Qxe1 Bg4 11. Ne5 Be6 12. Bg5 h6 13. Bh4 g5 14. Bg3 c5 15. dxc5 Bxc5 16. Na4 Bd6 17. Qe3 Nc6 18. Nxc6 bxc6 19. Bxd6 Qxd6 20. Qc5 Qf4 21. Nc3 Rb8 22. Rb1 Rxb2 23. Rf1 Rb6 24. Qa5 Qc7 25. Na4 Rb7 26. Qxc7 Rxc7 27. Nc5 Bc8 28. Rb1 Nd7 29. Nxd7 Bxd7 30. f3 c5 31. Be2 Bf5 32. Bd3 Bxd3 33. cxd3 Kg7 34. Kf2 Kf6 35. g3 Ke5 36. Ke3 Kd6 37. f4 g4 38. Rb2 Kc6 39. f5 f6 40. Kf4 h5 41. Re2 Rd7 42. Re6+ Rd6 43. Re7 Kb6 44. Rh7 c4 45. dxc4 dxc4 46. Rh8 c3 47. Rc8 Rc6 48. Rb8+ Kc5 49. Rb1 c2 50. Rc1 Kd4 51. h3 gxh3 52. Kf3 Kd3 53. Rh1 c1=Q 54. Rxh3 Qf1#

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Pawn promotion:
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Black to play and win.

?, ?
Replace #1 vs. ?

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

(black to move) 1. e4 c5 2. Bc4 Nf6 3. Nc3 Nc6 4. Nf3 e6 5. O-O d5 6. exd5 exd5 7. Bb5 Bd6 8. Bxc6+ bxc6 9. Re1+ Be6 10. Ng5 O-O 11. Nxe6 fxe6 12. Rxe6 Qd7 13. Re2 Ng4 14. h3 Bh2+ 15. Kh1 Nxf2+ 16. Rxf2 Rxf2 17. Kxh2 Qd6+ 18. Kh1 Qg3 19. Qg1 Re8 20. d3 Re1

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Black to play and win.

?, New Whiteland IN
Chess Analysis Italian Game vs. ?

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

(black to move) 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Na5 6. d3 h6 7. Nf3 e4 8. Qe2 Nxc4 9. dxc4 Bc5 10. O-O O-O 11. Nfd2 Bg4 12. Qe1 Qd7 13. Nb3 Bf3 14. Bf4 Qg4 15. Bg3 Nh5 16. Nb1d2 Nxg3 17. hxg3 Qxg3 18. Nxf3 exf3 19. Qe4 Qxg2#

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White to play for a slight advantage.

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Analysis of john2001plus (1550) vs. jeffreymigallos (1812)

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 e6 3. c4 Bb4+ 4. Nbd2 b6 5. a3 Bxd2+ 6. Bxd2 Bb7 7. e3 O-O 8. Be2 Ne4 9. O-O f5 10. Bb4 d6 11. Nd2 Rf6 12. Nxe4 fxe4 13. f3 a5 14. Bc3 Rg6 15. fxe4 Bxe4 16. Bf3 Qh4 17. Bxe4 Qxe4 18. Qf3 Qxf3 19. Rxf3 Nd7 20. Raf1 Nf6 21. d5 e5 22. Be1 Ne4 23. Rf7 Rc8 24. Rd7 Nf6 25. Re7 Kf8 26. Re6 Kg8 27. Bh4 Ng4 28. Rxg6 hxg6 29. Bg5 a4 30. h3 Nh6 31. Bxh6 gxh6 32. e4 Kg7 33. Rf3 b5 34. cxb5 Rb8 35. b4 Rxb5 36. Rc3

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White to play and win.

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Analysis of WWWaffenSS (1717) vs. john2001plus (1544)

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

(white to move) 1. d4 e6 2. c4 Nf6 3. Nc3 Bb4 4. Nf3 b6 5. Bg5 Bb7 6. e3 h6 7. Bh4 g5 8. Bg3 Ne4 9. Qc2 f5 10. Bd3 d6 11. O-O Nd7 12. Nxe4 Ba5 13. a3 O-O 14. b4 fxe4 15. Bxe4 Bxe4 16. Qxe4 Qe8 17. bxa5

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Pawn promotion:
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White to play and win.

ICC tourney 1297 (12 3), Internet Chess Club
Analysis of yoshi (1745) vs. Zephyr (1509)

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 Be7 5. Bf4 O-O 6. e3 c5 7. dxc5 Bxc5 8. cxd5 exd5 9. Be2 Nc6 10. O-O d4 11. exd4 Nxd4 12. Nxd4 Qxd4 13. Qxd4 Bxd4 14. Bf3 Nd7 15. Rfd1 Be5 16. Be3 Rb8 17. Bxa7 Ra8 18. Bd4 Bxd4 19. Rxd4 Nc5 20. Rc4 Nb3 21. Rd1 Na5 22. Ra4 Ra6 23. Be2 Ra7 24. Bb5 Bf5 25. Rc1 Rfa8 26. Nd5 Nc6 27. Bxc6 bxc6 28. Ne7+ Kf8 29. Rxa7 Rxa7 30. Nxf5

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What is the best continuation for White?

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Analysis of BDRichardson (1179) vs. ami22-2000 (1147)

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

(white to move) 1. e4 a6 2. d4 c5 3. d5 b6 4. Nf3 d6 5. Nc3 e5 6. a3 Nf6 7. Be3 h6 8. g3 Bg4 9. Bg2 Nbd7 10. Nb1 Nxe4 11. Nbd2 Nef6 12. c4 b5 13. b3 Qa5 14. O-O Qc3 15. Qc1 b4 16. axb4 cxb4 17. Qb1 a5 18. Ne4 Nxe4 19. Qxe4 Bxf3 20. Bxf3 Qxb3 21. Rab1 Qc3 22. Rfc1 Qa3 23. Ra1 Qb3 24. Bd1 Qb2 25. Rab1 Qa3 26. f4 Be7 27. fxe5 Nxe5 28. Bf4 f6 29. Bxe5 dxe5 30. Qg6+ Kf8 31. Qe4 Re8 32. c5 Bxc5+ 33. Rxc5 f5 34. Qxf5+ Kg8 35. Bb3 a4 36. Ra5 Rf8 37. Qe6+ Kh7 38. Bc2+ Qd3 39. Bxd3+ e4 40. Bxe4+ g6 41. Qxg6#

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Pawn promotion:
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What is the fastest way for White to win?

ICC 30 0, Internet Chess Club
Analyis of yoshi (2013) vs. fiddler (1813)

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

(white to move) 1. Nf3 d5 2. d4 Nf6 3. c4 e6 4. Nc3 Be7 5. Bf4 O-O 6. e3 b6 7. cxd5 Nxd5 8. Nxd5 Qxd5 9. a3 Bb7 10. Bxc7 Nd7 11. Rc1 Rac8 12. Bd3 Qh5 13. O-O Nf6 14. Be2 Qa5 15. Qd2 Qxd2 16. Nxd2 Nd5 17. Bg3 Nf6 18. Bf3 Bxf3 19. Nxf3 Ne4 20. Rfd1 f6 21. Kf1 Nxg3+ 22. hxg3 Kf7 23. Ke2 Bd6 24. Rxc8 Rxc8 25. Kd2 g5 26. Rc1 Rxc1 27. Kxc1 g4 28. Nd2 e5 29. dxe5 Bxe5 30. b3 f5 31. Kc2 Ke6 32. Kd3 Kd5 33. e4+ fxe4+ 34. Nxe4 b5 35. Ng5 h6 36. Nf7 h5 37. Nxe5 Kxe5 38. a4 bxa4 39. bxa4 Kd5 40. f4 gxf3 e.p. 41. gxf3 a6 42. a5 Ke5 43. Ke3 Kf5 44. Kd4 Kg5 45. Kc5 Kf5 46. Kb6 Ke5 47. Kxa6 Kd4 48. Kb7 Ke3 49. a6 Kxf3 50. a7 Kxg3 51. a8=Q h4 52. Kc6 h3 53. Kd5 Kg2 54. Ke4 h2 55. Ke3+ Kg1 56. Qa2 h1=N 57. Kf3

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Pawn promotion:
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	- Rook
	- Bishop
	- Knight

Black to play and win.

G/10, Columbus Chess Club
Analysis of Coffey, John vs. Bemke, James

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

(black to move) 1. e4 e5 2. Nc3 Nf6 3. f4 d5 4. fxe5 Nxe4 5. d3 Nxc3 6. bxc3 c5 7. Nf3 Nc6 8. Be2 d4 9. cxd4 cxd4 10. O-O Be7 11. Qe1 O-O 12. Qg3 Re8 13. Bh6 g6 14. Bg5 Qc7 15. Rae1 Nxe5 16. Bf4 Bd6 17. Bd1 Nxf3+ 18. gxf3 Rxe1 19. Bxd6 Rxf1+

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	- Knight

Mate in 5 moves.

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Khalid_Alig (1823) vs. natalia6 (1703)

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

(white to move) 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. e4 g6 7. Nf3 Bg7 8. Bb5+ Bd7 9. Bxd7+ Nbxd7 10. O-O O-O 11. a4 Re8 12. Qc2 a6 13. Bf4 Qc7 14. a5 Nh5 15. Bd2 Nhf6 16. Rfe1 Re7 17. g3 Rae8 18. Kg2 c4 19. Ra4 Nc5 20. Rxc4 Qxa5 21. Na4 Qd8 22. Nxc5 dxc5 23. Bg5 h6 24. Bxf6 Bxf6 25. Rxc5 Qb6 26. b3 Kg7 27. Rc4 g5 28. Qd3 Qd6 29. Nd4 Bxd4 30. Qxd4+ f6 31. f3 Re5 32. Rec1 Re8e7 33. Qc5 Qxc5 34. Rxc5 Rd7 35. Rc7 Ree7 36. Rxd7 Rxd7 37. b4 Kg6 38. Kf2 f5 39. Ke3 Kf6 40. Kd4 h5 41. e5+ Ke7 42. Rc5 Ke8 43. e6 Rd8 44. Ke5 Ke7 45. Rc7+ Ke8 46. d6 h4 47. Rh7 Rxd6 48. Kxd6 Kf8 49. Rf7+ Kg8 50. Ke5 hxg3 51. Kf6 g2 52. e7 g1=Q 53. e8=Q#

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Pawn promotion:
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	- Knight

Black to play for an advantage.

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wiseone22 (1810) vs. john2001plus (1840)

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. Nf3 Nf6 5. Bd3 Bd6 6. h3 O-O 7. O-O Nc6 8. c3 Re8 9. Bg5 h6 10. Bh4 g5 11. Bg3 Bxg3 12. fxg3 g4 13. Nh4 Qd6 14. Nf5 Bxf5 15. Bxf5 Qxg3 16. hxg4 Qe3+ 17. Kh2 Ne4 18. Qf3 Ng5 19. Qxe3 Rxe3 20. Nd2 Rae8 21. Nf3 Nxf3+ 22. Rxf3 Rxf3 23. gxf3 Re2+ 24. Kg3 Rxb2 25. Re1 Kf8 26. Bd7 Ne7

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Pawn promotion:
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	- Rook
	- Bishop
	- Knight

Black to play and mate in 6 moves.

ICC tourney 1291 (12 3), Internet Chess Club
tigeriz (1609) vs. yoshi (1769)

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

(black to move) 1. e4 e6 2. d4 d5 3. exd5 exd5 4. Bd3 Nf6 5. Nf3 Bd6 6. h3 O-O 7. O-O Be6 8. Re1 Nbd7 9. c3 c5 10. Nbd2 Qc7 11. Nf1 Rfe8 12. Ne3 Ne4 13. Nd2 Ndf6 14. Nxe4 Nxe4 15. Qf3 f5 16. Nc2 c4 17. Be2 g5 18. Qh5 Bf7 19. Qf3 Be6 20. Qh5 Qg7 21. Ne3 Nf6 22. Nxf5 Nxh5 23. Nxg7 Nxg7 24. Bxg5 Bf5 25. Bf3 Be4 26. Bg4 Ne6 27. Be3 Nf4 28. g3 Nd3 29. Re2 b5 30. Rd1 b4 31. f3 Bg6 32. f4 bxc3 33. bxc3 Rab8 34. Bd7 Re7 35. Ba4 Reb7 36. g4 Nb2 37. Bc6 Nxd1 38. Bxd5+ Bf7 39. Bxb7 Rxb7 40. Bf2 Nxf2 41. Rxf2 Rb1+ 42. Kg2 Rc1 43. f5 Bd5+ 44. Rf3 Rc2+ 45. Kf1 Bxf3 46. Ke1 Bg3+ 47. Kf1 Rc1#

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Pawn promotion:
	- Queen
	- Rook
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	- Knight

White to play and win.

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NiceMoment (1479) vs. E-MAN85 (1765)

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

(white to move) 1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. d4 exd4 5. e5 d5 6. Bb5 Ne4 7. Nxd4 Bc5 8. Nxc6 Bxf2+ 9. Kf1 bxc6 10. Bxc6+ Kf8 11. c4 Ba6 12. b3 Bc5 13. Ba3 Bxa3 14. Nxa3 Qg5 15. Qd4 Rd8 16. Kg1 Nd2 17. Qf2 dxc4 18. bxc4 Qxe5 19. Re1 Qd6 20. Bd5 Rd7 21. h4 Qxa3 22. Rh3 Qd6 23. Rhe3 g6 24. Re6 Qb4 25. Qf6 Qc5+ 26. Kh1 Kg8 27. Re8+ Qf8 28. Rxf8+ Kxf8 29. Qxh8#

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	- Knight