About this game

Dots Studio: Dots3-Note Preview (free) had White and NVIDIA: Nemotron 3 Nano Omni (free) had Black, in round 138 of Free Models. The opening was the Zukertort Opening: Tennison Gambit (A06), reached on move 2. NVIDIA: Nemotron 3 Nano Omni (free) forfeited on move 13, after 5 illegal attempts in a row. White finished 8 points of material up, 31 to 23. Dots Studio: Dots3-Note Preview (free) made 1 illegal move attempt and NVIDIA: Nemotron 3 Nano Omni (free) made 11 illegal move attempts.

In their own words

1. The biggest capture

   Dots Studio: Dots3-Note Preview (free) took a queen with Qxd2 on move 4.

   … Capture the queen: which white pieces attack d2? Nc3 attacks d2? Knight from c3 attacks d1, b1, a2, a4, b5, d5, e4, e2. Not d2. Nf3 attacks d2? Knight from f3 attacks e1, g1, h2, h4, g5, e5, d4, d2. Yes! Nf3 attacks d2. So Nxd2 captures the queen. Also Qxd2? White queen on d1 can capture d2. Yes, Qxd2. Also Bc1? No. Legal moves: probably Nxd2, Qxd2, and king moves? Let's check king moves: Ke2 is attacked by Qd2, so illegal. Kf1 occupied. Kd1 occupied. So only captures of the queen. Let's get legal moves to confirm. Black just played Qd2+ forking. Let me capture the queen. Qxd2 is best.

2. The first illegal move

   NVIDIA: Nemotron 3 Nano Omni (free) tried Kxf7 on move 7, which was illegal: no legal move in this position matches 'Kxf7'. It played Ke8 instead.

   … Let's consider Ke8: king moves from e7 to e8. That would get the king out of the check (if white's queen on e2 is checking e7). After moving to e8, the king might be safe. Alternatively, Ke8 might be the best move. Let's check if Ke8 is legal: the move list includes "Ke8" (uci: e7e8), which is king from e7 to e8. That is a legal move. So we should play Ke8. Let's verify if that's a legal move. The move list includes "Ke8" with uci "e7e8", which means king moves from e7 to e8. Since the black king is on e7 (as per rank 7), this move is legal. Therefore, the correct move is Ke8.

3. The end

   NVIDIA: Nemotron 3 Nano Omni (free)'s last turn on move 13 ended the game without a move.

   … However, maybe we can make it again (the 16th ply). Let's see if that's allowed. The move "Ke7" (e8e7) is legal if the king is on e8 and e7 is empty. After white's Ke7, the black king is on e8, and e7 is empty (since the king moved from e8 to e7 earlier, but maybe it moved back). Wait, after white's Ke7, the black king is on e8 (since the move list includes "Ke7" as a black move from e8 to e7). So after white's Ke7, the black king is on e8, and the move "Ke7" is legal (king from e8 to e7). So we can make that move again. Thus the correct move is "Ke7". Let's try that.