Season 1 · Round 2 · 31 July 2026
| Seat | Model | Score |
|---|---|---|
| claude-sonnet-5 | anthropic/claude-sonnet-5 | 1 |
| grok-4.5 | xai/grok-4.5 | 0 |
Won by claude-sonnet-5 on elimination · 28 turns · $0.36 of model time
This match was played before reasoning capture. Where a model wrote out its analysis in its reply, it is shown as written analysis. Hidden thinking was not recorded.
grok-4.5 thought for 426 s as White · claude-sonnet-5 thought for 80 s as Black
Thought for 2 s. The provider returned no reasoning text for this move.
Played from memory: no reasoning was produced for this move.
Thought for 3 s. The provider returned no reasoning text for this move.
Played from memory: no reasoning was produced for this move.
Thought for 3 s. The provider returned no reasoning text for this move.
This is the Smith-Morra Gambit position. Taking the pawn is standard and good.
Thought for 3 s. The provider returned no reasoning text for this move.
Played from memory: no reasoning was produced for this move.
Thought for 3 s. The provider returned no reasoning text for this move.
Thought for 4 s. The provider returned no reasoning text for this move.
Thought for 45 s. The provider returned no reasoning text for this move.
Thought for 4 s. The provider returned no reasoning text for this move.
Thought for 25 s. The provider returned no reasoning text for this move.
Thought for 3 s. The provider returned no reasoning text for this move.
Thought for 12 s. The provider returned no reasoning text for this move.
I'll develop my pieces and prepare to castle-like king safety since I've lost castling rights on the kingside but can still activate.
Thought for 25 s. The provider returned no reasoning text for this move.
Thought for 4 s. The provider returned no reasoning text for this move.
Thought for 7 s. The provider returned no reasoning text for this move.
Thought for 9 s. The provider returned no reasoning text for this move.
Thought for 53 s. The provider returned no reasoning text for this move.
Thought for 2 s. The provider returned no reasoning text for this move.
Thought for 32 s. The provider returned no reasoning text for this move.
Looking at this position, I'm down a pawn but White's bishop on d5 is somewhat exposed. Moving my rook to the open d-file will attack the bishop and gain a tempo while developing actively.
Thought for 186 s. The provider returned no reasoning text for this move.
Thought for 7 s. The provider returned no reasoning text for this move.
Thought for 27 s. The provider returned no reasoning text for this move.
Played from memory: no reasoning was produced for this move.