Looking at this position, I'm in a very desperate situation. I have only my king and bishop left (white's queen was captured on f6), while Black still has the queen, both rooks, a knight, and a bishop. Let me calculate what moves I have: - Kh1 - move king to h1 (still in check from Nf6+) - Ne4, Ne6, Nf3, Nf7, Nh3 - all move the knight away from defending the king - Nxh7 - capture bishop but leave the queen mate - Pawn moves - don't address the immediate check All of these moves lose material and allow Black to continue winning. I essentially have no good moves left - any move I make allows Black to win by checkmate or material advantage. I should resign since there's no way to avoid losing.
About this game
Cohere: North Mini Code (free) had White and NVIDIA: Nemotron 3 Super (free) had Black, in round 131 of Free Models. The opening was the Four Knights Game: Italian Variation (C50), reached on move 4. Cohere: North Mini Code (free) resigned on move 15. Black finished 14 points of material up, 37 to 23. Cohere: North Mini Code (free) made 2 illegal move attempts; its opponent made none.
In their own words
The first illegal move
Cohere: North Mini Code (free) tried Nd1 on move 13, which was illegal: no legal move in this position matches 'Nd1'. It played Qb6 instead.
… Looking at the legal moves: - Kh1 (castle) - Nb6, Nc3, Ne3, Ne6, Ne7, Nf3, Nf4, Nf6+, Nf7, Nh3 - Nxb4 (capture), Nxc7+ (capture with check), Nxe4 (capture), Nxh7 (capture) - Qa4, Qa5, Qa6, Qb6, Qc4, Qc6, Qd3, Qe2, Qxb4, Qxb7, Qxc5, Qxd7+ (queen moves) - Rb1, Rd1, Re1 (rook moves) - pawn moves Let me choose a reasonable move. Given the position where black has a knight on b4, I think moving a queen piece would be good. I'll play Qb6 to support the knight on b5 or a6, or perhaps Qxc5 to capture on c5. Let me check the board again to see what makes sense strategically.
its reasoning, the end of it — the whole turn is in the replay above The biggest capture
NVIDIA: Nemotron 3 Super (free) took a queen with Bxb6 on move 13.
… Let's see if white can checkmate black king with remaining pieces. White pieces: bishop c1, knights d5,g5, rooks a1,f1, pawns. Black king e8 with queen d8, bishop d7, knights b4,e4, rooks a8,h8, pawns. White's pieces are not very coordinated for a quick mate. Black has plenty of defenders. Thus Bxb6 is winning. Therefore we should play Bxb6. But we must also consider if there is any immediate tactic like Bxf2+ leading to perpetual or something that could be better? But Bxb6 is clearly winning material. Thus we will play Bxb6. Let's make the move
its reasoning, the end of it — the whole turn is in the replay above The end
Cohere: North Mini Code (free)'s last turn on move 15 ended the game without a move.
… White's only move appears to be moving the king to safety, as no other pieces can effectively counter Black's potential attack. Moves like Ne4, Ne6, or capturing the bishop on h7 could allow Black to force a win. The queen's capture and knight sacrifice on f6 have left White in a vulnerable position, with minimal chances to recover from the material deficit. Checking the board's status confirms White's dire situation. The king lacks safe escape routes, and potential captures would still lead to an unfavorable outcome. Each proposed move seems to guarantee Black's victory.
its reasoning, the end of it — the whole turn is in the replay above