Chess Arena

glm-5-1 vs gpt-5.6-luna

gpt-5.6-luna wins — checkmate
White (glm-5-1) — 5 retries, $0.7697Black (gpt-5.6-luna) — 5 retries, $0.1018
p
p
p
p
k
q
K
1. whitee4
2. blacke5
3. whited4
4. blackexd4
5. whiteQh5
6. blackg6
7. whiteQh5h7 — illegal attempt
7. whiteQh6
8. blackNxh6
9. whiteBc4
10. blackQh4
11. whiteBxf7+
12. blackKxf7
13. whiteBxh6
14. blackQxh6
15. whiteNf3
16. blackQc1+
17. whiteKe2
18. blackQe3+
19. whitefxe3
20. blackd6
21. whiteexd4
22. blackBg4
23. whitee5
24. blackBxf3+
25. whiteKd3
26. blackBxg2
27. whitee6+
28. blackKxe6
29. whited5+
30. blackBxd5
31. whiteNd2
32. blackBxh1
33. whitec4
34. blackBg7
35. whiteTo make progress toward winning the game, you need to activate your pieces and push your pawn majority on the queenside. Moving the pawn to b4 introduces the threat of b5, which will eventually force the black king away and allow your queenside pawns to promote. It also avoids early repetition and prepares to activate your rook. b2b4 — illegal attempt
35. whiteNf3
36. blackBxf3
37. whiteRe1+
38. blackKf5
39. whiteRe7
40. black — illegal attempt
40. blackBd4
41. whiteRe8
42. blackRxe8
43. whitec5
44. blackBxc5
45. whitea4
46. blackRe3+
47. whiteKc4
48. blackRe4+
49. whiteKd3
50. blackRe3+
51. whiteKc4
52. blackRe4+
53. whiteKb5
54. blackRb4+
55. whiteKa5
56. blackBb6+
57. whiteKxb4
58. blackKf4
59. whiteKc4
60. blackBe2+
61. whiteKd5
62. blackBf3+
63. whiteKc4
64. blackKf5
65. whiteTo secure checkmate, you need to force the black king to the edge of the board where it can be cornered by your king and pawn. The black king is currently on f5 and wants to stay near the center. Moving the pawn to `b4` restricts the black king's movement and forces it toward the edge. If 1. b4 Kb4, then 2. Kc4 Ka3 3. Kb5 Kb2 4. Kb4 Kc2 5. Ka5, and you can proceed to queen your b-pawn or the h-pawn. If Black plays 1. b4 Ke5 instead, 2. Kc5 Kd4 3. Kb5 forces the king away and allows your pawns to advance. b2b4 — illegal attempt
65. whiteKb5
66. blackBc6+
67. whiteKb4
68. blackKe4
69. whitea5
70. blackBc5+
71. whiteKc4
72. blackBd5+
73. whiteKb5
74. blackBc6+
75. whiteKc4
76. blackBd5+
77. whiteKc3
78. blackBd4+
79. whiteKd2
80. blackBe3+
81. whiteKe1
82. blackKd3
83. whitea6
84. blackBd2+
85. whiteKf1
86. blackBg2+
87. whiteKxg2
88. blackKe2
89. whiteaxb7
90. black — illegal attempt
90. black — illegal attempt
90. blackKe1
91. whitebxa8=Q
92. blackNc6
93. whiteQc8
94. blackNe7
95. whiteQd7
96. blackNf5
97. whiteTo win this game, we must checkmate the black king. The black king is currently trapped on e8 with pawns on d7, f7, and h7 blocking its escape. The black knight on f6 also covers e8, further restricting the king. Our queen on d7 currently shares the d-file with the black king. If we move the queen away, we temporarily lose control of e8, and the black king can escape to d8 (since d7 is vacated) or d7. However, we have a set-up where we can force checkmate in two moves. Let's look at the move **Qd7h7**: 1. By moving the queen to h7, we attack the black pawn on h7 (which is pinned to the king along the h-file) and prepare to deliver checkmate on the next turn. 2. After **Qd7h7**, Black's only legal moves are with the knight (e.g., Nf6-d5, Nf6-e4, Nf6-g4, Nf6-h5) or advancing the pawn to h6. 3. No matter what Black does, they cannot stop the checkmate. We will follow up with **Qh7h8#** (or **Qh7g8#** if the knight moves to f5). The queen delivers check from the edge of the board, and the black king has no squares to escape to, resulting in a checkmate. Other queen moves like Qd7f7 result in a stalemate (since Black has no legal moves left), and Qd7e8+ allows the king to escape to d7, making it much harder to win. Therefore, the winning move is **d7h7**. d7h7 — illegal attempt
97. whiteQe8+
98. blackNe3+
99. whiteQxe3+
100. blackBxe3
101. whiteb4
102. blackKd2
103. whiteKf3
104. blackKc3
105. whiteb5
106. blackKc4
107. whiteKg4
108. blackKxb5
109. whiteKf3
110. blackKc6
111. whiteThe position requires careful maneuvering to checkmate the black king. The black king is currently stalemated if White's bishop moves away, so we must maintain control while making progress. 1. Moving the bishop to e4 (`f3e4`) attacks the pawn on b7, which Black must push to b6. 2. After `...b6`, White plays `Be2`, threatening `Bf3` and then `Bxb6#` (since the king will be trapped on c6). 3. Black is forced to play `...Kc6` to prevent `Bf3`. 4. White then plays `Bf3`, threatening `Ke6` followed by `Bxb6#`. Black's only way to delay is `...Kd7`. 5. White plays `Ke6`, and Black is forced to play `...Kc7`. 6. White then plays `Bf7`, restricting the king further and stopping ...Kc6, preparing Bxb6# which will arrive in a few moves regardless of Black's attempts. This sequence guarantees checkmate without falling into stalemate or a draw by repetition. `f3e4` — illegal attempt
111. whiteKe4
112. blackd5+
113. whiteKf3
114. blackKd6
115. whiteKg2
116. blackKe5
117. whiteh4
118. blackKf4
119. whiteh5
120. blackgxh5
121. whiteKf1
122. black — illegal attempt
122. blackKf3
123. whiteKe1
124. blackBd2+
125. whiteKxd2
126. blackd4
127. whiteKe1
128. blackd3 — illegal attempt
128. blackd3
129. whiteKf1
130. blackd2
131. whiteKg1
132. blackd1=Q+
133. whiteKh2
134. blackQe2+
135. whiteKg1
136. blackQg2#
Ply 136 of 136