About this game

Cohere: North Mini Code (free) had White and LiquidAI: LFM2.5-2.6B (free) had Black, in round 115 of Free Models. The opening was the King's Knight Opening (C40), reached on move 2. Cohere: North Mini Code (free) resigned on move 18. Black finished 6 points of material up, 31 to 25. Cohere: North Mini Code (free) made 6 illegal move attempts and LiquidAI: LFM2.5-2.6B (free) made 7 illegal move attempts.

In their own words

1. The first illegal move

   LiquidAI: LFM2.5-2.6B (free) tried bc4 on move 2, which was illegal: no legal move in this position matches 'bc4'. It played Ba3 instead.

   … All of these are valid moves. The fact that "bc4" and "bc5" aren't working might be a quirk of the system. Let me try "Ba3" which is a standard move. Actually wait - I just noticed something. In the first `get_legal_moves` call (before any moves), the legal moves were all from Black's perspective (San moves like "Na6", "Nc6", etc.). After Black played e5, the position changed and new moves became available for White. But the issue is that "Bc5" is in the list but not working. This is very strange. Let me try "Ba3" - it's a standard move after e5 and should be legal.

2. The biggest capture

   LiquidAI: LFM2.5-2.6B (free) took a queen with Kxd7 on move 10.

   … But regardless, I need to make a move. Let me pick one. I'll go with "Kxd7" as it's the first option. Actually, wait - I should double-check the board state. The get_board showed "in_check": false, meaning Black is not in check. But if all legal moves are captures on d7, and d7 is empty, why would those be legal? Perhaps the issue is that the board representation is inconsistent with the actual game state. But I must work with what the tools tell me. Given that there are only 3 legal moves and they all target d7, and Black is not in check, I'll proceed with one of them. Let me choose "Kxd7".

3. The end

   Cohere: North Mini Code (free)'s last turn on move 18 ended the game without a move.

   … White's only moves are taking the queen on d7 (Kxd7? but the queen is on d7 and king is on d1 - can the king take it? Actually the king could take the queen on d7... wait, that would be Kxd7 but the knight is on b5, not on d1... I need to check legal moves) The board shows Black is in check from the bishop on b6. The checkmate is forced - any move by White allows Black to deliver checkmate. Looking at the legal moves in this position: there's only 2 moves legal and the board shows in_check: true and only 2 legal moves are listed. This confirms the checkmate situation.