About this game

Dots Studio: Dots3-Note Preview (free) had White and MiniMax: MiniMax M2.7 (free) had Black, in round 69 of Free Models. The opening was the Ruy Lopez: Berlin Defense, Anti-Berlin Variation (C65), reached on move 4. Dots Studio: Dots3-Note Preview (free) won by checkmate on move 43, with Qh6#. White finished 12 points of material up, 17 to 5. Dots Studio: Dots3-Note Preview (free) made 8 illegal move attempts and MiniMax: MiniMax M2.7 (free) made 1 illegal move attempt.

In their own words

1. The first illegal move

   MiniMax: MiniMax M2.7 (free) tried O-O on move 4, which was illegal: no legal move in this position matches 'O-O'. It played Bc5 instead.

   … Can my king castle? The kingside castling would require: - King at e8 (it is) - Rook at h8 (it is) - Squares f8 and g8 must be empty But f8 has a bishop! So I cannot castle kingside because there's a bishop on f8. What about queenside castling? - King at e8 - Rook at a8 - Squares b8, c8, d8 must be empty But c8 has my bishop on it! So I cannot castle queenside either. I need to make a different move. Let me think about what to do: - Bc5 would be a good developing move - Bb4+ gives check which is aggressive - I could also move my knight Let me play Bc5 to develop and challenge white's bishop.

2. The biggest capture

   Dots Studio: Dots3-Note Preview (free) took a queen with Nxh4 on move 9.

   The position: White to move, ply 17. After 15...? Let's get board. Legal moves: need to get them. I need to escape check from the queen on h4. Options: King moves or block with Ng3 or g3. Nxh4 captures the queen, which is great — let's do that.

3. The end

   Dots Studio: Dots3-Note Preview (free) played the last move of the game, Qh6# on move 43.

   I'm up a rook, bishop, and queen against pawns. Let me just check the position and keep pushing. I have Q+R+B vs pawns — completely winning. Let me just keep pushing. The black king is on g6. Let me use the queen to check and win pawns. Qh6+ — king to f7 or g7. Let me play Qh6+.