White's outside passed pawn decides matters.

1. e4 c5 2. b4 Nf6 3. e5 Nd5 4. bxc5 Nc6 5. c4 Ndb4 6. a3 Na6 7. d4 e6? Creating a big hole on d6. Black must resort to further clumsiness to fix it. 8. Nf3 b6 9. cxb6 axb6 r1bqkb1r/3p1ppp/npn1p3/4P3/2PP4/P4N2/5PPP/RNBQKB1R w KQkq - 0 10 10. d5 exd5 11. cxd5 Ne7 12. Bxa6? White should look to heighten the tension, not relieve it. 12. d6 and Black has difficulty preventing even slow, simple ideas like Nc3-d5, Bxa6, and Nc7+. 12... Bxa6 13. Nc3 Nf5 14. Ne2 g6? 15. O-O 15. Bg5 takes advantage of Black's last move; if he trades Bishops, his dark squares are permanently weak. 15... Bg7 16. Re1 O-O 17. Bf4 Bb7 18. Ng3 Ne7 19. d6 Nd5 20. Qd2 It's curious how White keeps allowing trades and Black keeps eschewing them. It should be the exact opposite, given Black's cramped position. 20... Nxf4 21. Qxf4 f6 22. Qc4+ Kh8 23. e6 dxe6 24. Qxe6 Re8?! 24... Bxf3 is better, weakening the White pawns. 25. Qxe8+ Qxe8 26. Rxe8+ Rxe8 27. Rb1! It's more important to get passed pawns than worry about ...BxN. 27... Bxf3 28. gxf3 Bf8 29. Rxb6 Rd8 30. a4 Bxd6 31. Ne4 Be7 32. Nxf6 32. a5! f5 33. a6! Rd1+ 34. Kg2 fxe4 35. Rb8+ Kg7 36. a7 wins easily. Instead, White takes the scenic route. 32... Bxf6 33. Rxf6 Ra8 34. Rf4 Kg7 35. Kf1 h5 36. Ke2 Kh6 37. Kd3 Rc8 38. a5 Rc1 39. Ra4 Rc8 40. a6 Ra8 He might as well have left it here on move 33! 41. a7 Kg5 42. h4+ Kf5 43. Ke3 g5 44. Ra5+ Kg6 45. Rxg5+ Kh6 46. Ra5 Kg6 47. f4 Kf6 48. f5 Kf7 49. Kf4 1-0 [Ryan/Fritz 9]

White takes over once his Rook reaches d6.

1. e4 d6 2. Bc4 Nf6 3. Nc3 g6 4. Nf3 Bg7 5. d4 O-O 6. O-O e5? Mistaking a Pirc for King's Indian; in the KID, Black can get away with (temporarily) losing a pawn on e5. In the Pirc, he should hit the 'fork trick' 6... Nxe4 7. Nxe4 d5 . 7. Bg5 7. dxe5 dxe5 8. Qxd8 Rxd8 9. Nxe5 picks off a pawn. The threat to f7 prevents Black from countering with stuff like ...Nxe4. 7... c6? 8. dxe5 dxe5 9. Qe2? Qd6 10. a3 b5 11. Bb3 Nbd7 12. Rad1 Qc7 13. Qe3 Ng4 14. Qe2 Nc5 15. Ba2 h6 16. Be3 Nxe3 17. Qxe3 Less advisable is 17. fxe3 a5 17... Qb6? r1b2rk1/p4pb1/1qp3pp/1pn1p3/4P3/P1N1QN2/BPP2PPP/3R1RK1 w - - 0 18 18. Rd6 Black should not have allowed this incursion. 18... Na4 19. Qxb6 axb6 20. Nxa4 bxa4 21. Rxg6 Be6 21... Kh7 22. Rxc6 Bb7 limits the damage. 22. Bxe6 Kh7 23. Rxg7+ Kxg7 24. Bf5 f6 25. Ne1 Rad8 26. Nd3 c5 27. g3 Rd4 28. Kg2 Rfd8 29. Kf3 c4 30. Nb4 Rd1 31. Kg2 White's position is so good it can withstand this small bit of clumsiness. 31... Rxf1 32. Kxf1 c3 33. bxc3 Rc8 Even without this mistake, Black is still quite lost. 34. Bxc8 1-0 [Ryan/Fritz 9]

Black swindles his way out of a hopeless position.

1. d4 d5 2. Nf3 Nf6 3. e3 Bf5 4. c4 e6 5. Qb3 b6 5... Nc6! and now 6. Qxb7? Nb4 7. Na3 Rb8 8. Qxa7 Ra8 9. Qb7 Rxa3 10. bxa3 Nc2+ works out in Black's favor. 6. Ne5 c5!? 7. Qa4+ 7. cxd5 exd5 8. Bb5+ Bd7 9. Nxd7 Nbxd7 10. Nc3 wins a pawn, even after 10... c4 (10... Bd6 is probably the best bet, playing it like a gambit.) 11. Qa4 Bd6 12. Bc6 . 7... Nbd7 8. cxd5 exd5 9. Bb5 Be7 10. Nc6 Qc7 11. Nxe7 Kxe7 12. O-O Rhc8 13. Re1 Kf8 14. Nc3 Re8 15. Bc6 Rad8 16. Nxd5 Nxd5 17. Bxd5 Nf6 18. Bf3 cxd4 19. Qb4+ Kg8 20. exd4 Rxe1+ 21. Qxe1 Rxd4 22. Be3 Rd7 23. Rc1 Qe5? 23... Qd8 keeps Black in the game. 24. g4! The best move in the position - as we'll see. 24... Be4? Bad, but Black is still lost after 6k1/p2r1ppp/1p3n2/4q3/4b1P1/4BB2/PP3P1P/2R1Q1K1 w - - 0 25 24... Bg6 25. Rc8+ Ne8 26. Bc6 Re7 27. Bxe8 Rxe8 28. f4! now carries the threat of f5, trapping the Bishop, thanks to White's 24th move. 25. Bxe4? 25. Rc8+ Ne8 26. Bf4! wins a piece. 25... Qxe4 26. Qe2 Qe6 27. f4?! h6 27... Re7! taunts White to exploit the back rank. 28. g5 Nd5 29. f5 Qe5 30. Rc8+ Re8 31. Rxe8+ Qxe8 32. Kf2 Qe5 28. g5 hxg5 29. fxg5 Ne8 30. Kf2 Qe5 31. Kf3? Re7 32. Rc3 Qd5+ 33. Kf2 Qxa2 34. b4 White shouldn't be trading Queens when down a pawn. 34... Qxe2+ 35. Kxe2 Kh7 36. h4 f6 37. Kf3 fxg5 38. Bxg5 Re5 and Black eventually won. 0-1 [Ryan/Fritz 9]

Black's extra pawn leads to a decisive Kingside attack.

1. d4 d5 2. Nc3 e6 3. Bf4 3. e4 transposes to a French. 3... c5 4. e3 Nc6 4... cxd4 answers 5. Nb5? with 5... Bb4+ 6. c3 dxc3 7. Nc7+? Qxc7! 8. Bxc7 c2+ and wins the Q back with interest. 5. Bd3 5. Nb5 forces 5... e5 to stop the fork on c7. 5... cxd4 6. exd4 Nxd4 7. Nf3 Nxf3+ 8. Qxf3 Bb4 9. O-O Nf6 9... Bxc3! kills the annoying N once and for all. 10. Ne2 Only now does White begin to play like he's a pawn down. 10. Nb5! Ba5 11. b4 Bb6 12. a4! a6 13. Nd6+ Kf8 14. Be5 gives White more than adequate compensation. 10... O-O 11. a3 Bd6 12. Bg5 Be7 12... h6 ensures that Black gets her ...e5 push in, one way or the other. Fortunately for her, White does not realize the importance of stopping it, and so misses several chances, starting with 13.Nc3. 13. Rfe1 h6 14. Bd2 e5 15. Bb5 a6 15... Qb6 develops while attacking. 16. Ba4 b5 17. Bb3 Bb7 18. Qd3 18. Ng3 is a better way to try for counterplay. 18... Re8 19. c3 Rc8 20. f4?? A suicidal weakening of the Kingside. 20... Bc5+ 21. Kh1 2rqr1k1/1b3pp1/p4n1p/1pbpp3/5P2/PBPQ4/1P1BN1PP/R3R2K b - - 0 21 21... e4 21... Ng4 swiftly ends the game: 22. Rf1 Qh4 23. Qg3 Nf2+ 24. Rxf2 Qxg3 25. Nxg3 Bxf2 . 22. Qc2 22. Qh3 is a last-ditch attempt to defend the King. 22... Ng4 23. h3 Nf2+ 24. Kh2 Ng4+ 25. Kh1 Qh4 25... e3 seems even better 26. Rf1 exd2 27. Qxd2 d4 26. Nd4 The only humane thing to do, given that the 'alternative' is... 26. Rf1 Nf2+ 27. Kh2 d4 ...a steamroller. 26... Bxd4 27. Re2 Qg3 28. hxg4 Qh4# 0-1 [Ryan/Fritz 9]