Game 3: At move 15 white fails to move 15.g4 or 15.Ne2 which both lead to win of a pawn. Now the interesting game stays equal, with at the end black in the lead. But this endgame is too difficult for both (also for me to judge...). Black seemed to have the best chances, but white failed to get a draw by playing 66.Kh4?? instead of 66.Kf5...
Game 4: White treats the Grünfeld opening too risky, with his king left in the center. Black wins a pawn and then has two free pawns on the queen side. He has clear winning advantage, but makes it still a little difficult for himself. But in the end there is a deserved win.
Krypton Challenge (Tibono settings) - Mephisto Rebell 5.0 2 - 2
(and all 4 games won by black!?)
[Event "Test Tibono settings"]
[Site "Eindhoven"]
[Date "2020.03.20"]
[Round "3"]
[White "Krypton Challenge, 9/10/12/8/8/11/9."]
[Black "Mephisto Rebell 5.0"]
[Result "0-1"]
[ECO "D35"]
[Annotator "Wiselius,Paul"]
[PlyCount "164"]
[EventDate "2020.??.??"]
1. Nf3 Nf6 2. c4 e6 {**} 3. Nc3 d5 4. d4 Be7 5. cxd5 exd5 6. Bf4 O-O 7. e3 Nh5
8. Be5 {**} f6 9. Bg3 Nxg3 10. hxg3 Be6 11. Qb3 b6 12. Qc2 f5 13. Bd3 Nc6 14.
a3 a6 15. O-O (15. g4 {!} g6 16. gxf5 Bxf5 17. Nxd5 Bxd3 (17... Qxd5 18. Bc4
Bxc2 19. Bxd5+ Kg7 20. Bxc6) 18. Nxe7+ Qxe7 19. Qxd3) ({also} 15. Ne2 Qd6 16. Nf4 {gives significant advantage}) 15 ... Qd6 16. Rac1 Ra7 17. Ne2 Nd8 18. g4 g6 19.
gxf5 Bxf5 20. Bxf5 Rxf5 21. Ng3 Rf8 22. e4 dxe4 23. Nxe4 Qd5 24. Nc3 Qh5 25.
Qb3 + Kh8 26. Rfe1 Bd6 27. Qd5 Qh6 28. Rc2 Qf4 29. Re4 Qf6 30. Qg5 Qxg5 31. Nxg5
c6 32. Ne6 Re8 33. Nxd8 Rxd8 34. Na4 b5 35. Nc5 a5 36. Ne6 Rc8 37. d5 c5 38. a4
Rb7 39. axb5 Rxb5 40. Ng5 Kg7 41. Re6 Rd8 42. Ne4 Bf8 43. d6 Kf7 44. Re5 {better 44.Rf6+} Bxd6
45. Nxd6 + Rxd6 46. Rexc5 Rdb6 47. Rc7 + Ke6 48. Re2 + Kd6 49. Rxh7 Rxb2 50. Rxb2
Rxb2 51. Rh6 a4 52. Rxg6 + Kc5 53. Ra6 Kb4 54. Rb6 + {? useless tempo loss} (
54. g4 a3 55. g5 a2 56. Kg2 {and it will be a draw}) 54 ... Kc3 55. Rc6 + Kb3 56.
f4 a3 57. Kh2 a2 58. Rb6 + Kc2 59. Ra6 Kb1 60. f5 a1=Q 61. Rxa1 + Kxa1 62. Kg3
Rb1 63. Kg4 Kb2 64. f6 Rg1 65. g3 Kc3 66. Kh4 {?? the decisive error} ({with}
66. Kf5 {White could simply draw ...}) 66... Kd4 67. Kg4 Ke5 68.
Kh3 Kxf6 69. Kg4 Ke5 70. Kf3 Kf5 71. Kf2 Rc1 72. Ke2 Ke4 73. Kf2 Rc2+ 74. Kf1
Kf3 75. Ke1 Kxg3 76. Kd1 Rf2 77. Kc1 Kf4 78. Kb1 Ke3 79. Ka1 Kd3 80. Kb1 Kc3
81. Ka1 Kb3 82. Kb1 Rf1# 0-1
[Event "Test Tibono settings"]
[Site "Eindhoven"]
[Date "2020.03.20"]
[Round "4"]
[White "Mephisto Rebell 5.0"]
[Black "Krypton Challenge, 9/10/12/8/8/11/9."]
[Result "0-1"]
[ECO "D85"]
[Annotator "Wiselius,Paul"]
[PlyCount "138"]
[EventDate "2020.??.??"]
1. Nf3 Nf6 2. c4 c5 3. Nc3 d5 4. cxd5 {**} Nxd5 5. e4 Nxc3 6. bxc3 g6 7. d4 Qa5
{**} 8. Bb2 Bg7 9. Nd2 cxd4 10. Nc4 Qd8 11. cxd4 Nc6 12. e5 {?! a risky plan} O-O 13. d5 Nb4 14.
Ne3 e6 15. Bc4 {? better d6} exd5 16. Nxd5 Be6 17. Nxb4 Bxc4 {white is in trouble} 18. Rc1 Qxd1+
19. Kxd1 ({or} 19. Rxd1 a5 20. Rd4 b5 21. Nc6 Bxa2) 19... Rac8 20. Ra1 Rfd8+ 21. Ke1
Rc5 22. f4 a5 23. Nc2 Bxa2 24. Ne3 Bb3 25. Ke2 a4 26. Ba3 Rc6 27. Rhc1 Rxc1 28.
Rxc1 Bf8 29. Bxf8 Kxf8 30. Rc5 a3 31. Nc2 a2 32. Na1 Ba4 33. Rc1 b5 34. Ke3 Rd1
{34... b4! is much stronger} 35. Rxd1 Bxd1 36. Kd2 Bg4 37. Kc3 Be6 38. h4 Bc4
39. Kb4 {39.Nc2 offers more resistance} Ke7 40. Kc5 Ke6 41. g4 Be2 42. Kb4 Bxg4
43. Kxb5 Kf5 44.e6 fxe6 45. Kb4 Kxf4 {
better first Bf3 and Bd5 to protect pawn a2. These pawns do not run away.} 46.
Kb3 Kg3 47. Kxa2 e5 48. Nb3 e4 49. Kb2 Kxh4 50. Kc3 e3 51. Kd3 e2 52. Kd2 Kg3
53. Ke1 h5 54. Nc5 Kf3 55. Nb3 Ke3 56. Nc1 h4 {?} 57. Nxe2 {!} g5 (57 ... Bxe2 {
? is stalemate!}) 58. Nc3 h3 59. Kf1 Be6 60. Kg1 g4 61. Na4 g3 62. Nc3 h2 + 63. Kg2
Kd3 64. Nd1 Kd2 {! and not} (64... Bd5+ 65. Kxg3 h1=Q 66. Nf2+ {phew...!}) 65. Ne3 Kxe3 66. Kxg3 {!} H1 = R {
! promotion to queen would be stalemate again.} 67. Kg2 Rh3 68. Kg1 Bd5 69. Kf1 Rh1#
0-1