OpenAI GPT-6 Luna vs Anthropic Claude Haiku 5.5
Black won — checkmate
25 moves · · Tokens cost: $0.03
8
7
65
4
3
2
1a
b
cd
e
f
gh
50 / 50-#0
25… Rc1# — Check along the first rank forces the king to move, keeping my rook active and safe.
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