About this game

Dots Studio: Dots3-Note Preview (free) had White and NVIDIA: Nemotron 3 Super (free) had Black, in round 86 of Free Models. The opening was the Italian Game: Giuoco Pianissimo, Normal (C50), reached on move 4. Dots Studio: Dots3-Note Preview (free) won by checkmate on move 21, with Re8#. White finished 13 points of material up, 19 to 6. Dots Studio: Dots3-Note Preview (free) made 1 illegal move attempt and NVIDIA: Nemotron 3 Super (free) made 1 illegal move attempt.

In their own words

1. The first illegal move

   Dots Studio: Dots3-Note Preview (free) tried exd6 on move 7, which was illegal: no legal move in this position matches 'exd6'. It played exd5 instead.

   … The position: white pawns on e4, d3, a3. Black pawns on e5, d5 (wait, board shows black pawns on d5 and e5? Let me re-read. Board: 8: r . b q . r k . (a8 r, c8 b, d8 q, f8 r, g8 k) 7: p p p . . p p p (a7,b7,c7 pawns, f7,g7,h7 pawns) 6: . . n . . n . . (c6 n, f6 n) 5: . . b p p . . . (c5 b, d5 p, e5 p) 4: . . B . P . . . (c4 B, e4 P) 3: P . N P . N . . (a3 P, c3 N, d3 P, f3 N) 2: . P P . . P P P (b2, c2, f2, g2, h2) 1: R . B Q K . . R (a1 R, c1 B, d1 Q, e1 K, h1 R) So black pawns on d5 and e5. White pawn on e4. So exd5 is legal (e4xd5). I attempted exd6 which is wrong. Let me play exd5.

2. The biggest capture

   Dots Studio: Dots3-Note Preview (free) took a queen with Bxd8 on move 12.

   … . q . r k . 8 7 p p p . . p p p 7 6 . . n . . . . . 6 5 . . . . p . . . 5 4 . N b . . . . . 4 3 P . . P . N . . 3 2 . P P . . P P P 2 1 R . B Q . R K . 1 ``` White: Ra1, Bc1, Qd1, Rf1, Kg1, Nf3, Nb4, Bg5, pawns a3,b2,c2,d3,f2,g2,h2,e4 Black: Ra8, Qd8, Rf8, Kg8, Nc6, Bb4, pawns a7,b7,c7,e5,f7,g7,h7 Material: white has 35, black 32. So white is up a piece (3 points). White's move. I could take the queen with Bxd8. That's a capture. Let's check: Bg5xd8. That wins the queen! Black's queen on d8. White bishop on g5 captures on d8. That's a legal move. Yes, Bxd8 is available. Let's play it.

3. The end

   Dots Studio: Dots3-Note Preview (free) played the last move of the game, Re8# on move 21.

   … Actually wait, I should double check whether the rook on e1 can actually reach e8. The e-file: e2 (empty - row 2 shows ". P P . . P P P" → a2=., b2=P, c2=P, d2=., e2=., f2=P, g2=P, h2=P). So e2 is empty. e3: row 3 "P . . . . . . . ." → a3=P, rest empty, so e3 empty. e4: row 4 all empty. e5: row 5 "p . N . . . . ." → a5=p, c5=N, rest empty, so e5 empty. e6: row 6 ". . p . . . . ." → c6=p, rest empty, so e6 empty. e7: row 7 ". . p . . p p p" → b7=p, f7=p, g7=p, h7=p, so e7 empty. e8: row 8 ". . . . . . k ." → g8=k, so e8 empty. Yes! Re8 is legal and it's checkmate. Let me play Re8#.