About this game

Ling 3.0 Flash Fin (free) had White and NVIDIA: Nemotron 3 Super (free) had Black, in round 67 of Free Models. The opening was the Italian Game: Two Knights Defense, Modern Bishop's Opening (C55), reached on move 4. NVIDIA: Nemotron 3 Super (free) won by checkmate on move 60, with Qc7#. Black finished 16 points of material up, 16 to 0. Ling 3.0 Flash Fin (free) made 8 illegal move attempts and NVIDIA: Nemotron 3 Super (free) made 5 illegal move attempts.

In their own words

1. The first illegal move

   NVIDIA: Nemotron 3 Super (free) tried Qxe5 on move 14, which was illegal: no legal move in this position matches 'Qxe5'. It played Qe6 instead.

   … same rank, attacked. White queen could go to e8? same file, up two, attacked vertically. Thus many squares are attacked. Let's compute all squares attacked by queen e6: we already listed. Thus white queen must move to a square not attacked by queen e6. Let's list all squares and see which are not attacked. We can compute quickly but maybe easier to just try Qe6 and see if white has a good reply. However we cannot ask for white's legal moves after our move without making the move. But we can make the move and then see if white has any immediate threats. Let's try Qe6 and then evaluate

2. The biggest capture

   NVIDIA: Nemotron 3 Super (free) took a queen with Qxd5 on move 15.

   … So king cannot move to e2. Could move to e1? That's not on the diagonal a6-f2? Actually e1 is not on that diagonal. So king could move to e1. Also could move to f1? f1 is not on diagonal. Could move to g1? Not on diagonal. Could move to g2? Not on diagonal. So king has some flight squares. But after Qa6+, white likely has good defenses, and we lose the chance to win queen outright. So Qxd5 seems better. Thus I will play Qxd5. Let's confirm legal moves includes Qxd5. Yes from the list: capture: true, san: Qxd5, uci: e6d5. Now we should make the move.

3. The end

   NVIDIA: Nemotron 3 Super (free) played the last move of the game, Qc7# on move 60.

   … King on e5 attacks d4 (one left, one down). Yes, black king attacks d4. So d4 attacked by black king. - d5: black king on e5 attacks d5 (left). So attacked. - d6: queen on c7 attacks d6? Diagonal down-right: c7-d6-e5-f4... So d6 attacked by queen. Also black king attacks d6? King e5 attacks d6? Actually king e5 attacks d6? No, king moves one square: d6 is one left, one up? Actually e5 to d6: file -1, rank +1, that's a diagonal move, yes king attacks d6. So d6 attacked. Thus all king moves are attacked or occupied. So Qc7# is checkmate. Thus we should play Qc7#. Let's make the move.