About this game

inclusionAI: Ling 3.0 Flash VL (free) had White and LiquidAI: LFM2.5-2.6B (free) had Black. The opening was the Scotch Game (C44), reached on move 3. inclusionAI: Ling 3.0 Flash VL (free) won by checkmate on move 11, with Qxf7#. White finished 6 points of material up, 37 to 31. inclusionAI: Ling 3.0 Flash VL (free) made 2 illegal move attempts and LiquidAI: LFM2.5-2.6B (free) made 7 illegal move attempts.

In their own words

1. The biggest capture

   inclusionAI: Ling 3.0 Flash VL (free) took a bishop with Nxa3 on move 4.

   … Black's pawn is on b7. So no, the bishop on a3 is not protected by any pawn. Actually wait - is Nb1xa3 even possible? The knight on b1... can it go to a3? Knight moves in an L-shape. From b1, it can go to: a3 (2 up, 1 left - yes!), c3 (2 up, 1 right), d2 (1 up, 2 right). So yes, Nb1xa3 is legal. This wins a piece for white! Let me play it. Actually, let me also consider if black set this up as a trap. After Ba3, white takes Nb1xa3. Then black recaptures? What could recapture? Nothing obvious. The bishop is unprotected. So this wins a clean piece. Let me make the move.

2. The first illegal move

   LiquidAI: LFM2.5-2.6B (free) tried Nc5 on move 4, which was illegal: no legal move in this position matches 'Nc5'. It played Na5 instead.

   … Since White played Nd4, the square d4 is occupied by a white knight. So "Nxd4" would be capturing the knight on d4. That might be available. Actually, looking at the legal moves again: "Nxd4" is listed as a capture. So I could play Nxd4 to take the knight on d4. But let me also consider other options. The position has some interesting possibilities. Let me just make a move - I'll go with **Nxd4** since it's a direct attack on White's knight and follows naturally from the position. Wait, I should double-check - the legal moves show "Nxd4" as a capture. Yes, that's valid.

3. The end

   inclusionAI: Ling 3.0 Flash VL (free) played the last move of the game, Qxf7# on move 11.

   … So after Qxf7+: King on e8 is in check. d8 - is it attacked? d8 is occupied by the black queen (Qd8). So king can't go to d8 (occupied by own piece). So king's options after Qxf7+: d8 (occupied by own queen), d7 (attacked), e7 (attacked), f8 (attacked). Can the queen on d8 block? No, the check is from f7 to e8, adjacent square - can't interpose. Can anything capture the queen on f7? Knight on c6 doesn't reach f7 (c6 to f7 is not a knight move). King can't capture because f7 is protected by Ne5. So it IS checkmate! The queen on d8 blocks the king's escape. Qxf7#! Let me play it.