1rbqkb1r/2Pppp1p/p5p1/8/2P3n1/RQ5N/1PnPPPPP/1NBK1B1R b k - 2 10
FEN state: 1rbqkb1r/2Pppp1p/p5p1/8/2P3n1/RQ5N/1PnPPPPP/1NBK1B1R b k - 2 10 ; Best move: c2e3
The current state of the chess board is: Black rook at b8, black bishop at c8, black queen at d8, black king at e8, black bishop at f8 and black rook at h8. White pawn at c7, black pawn at d7, black pawn at e7, black pawn at f7 and black pawn at h7. Black pawn at a6 and black pawn at g6. White pawn at c4 and black knight at g4. White rook at a3, white queen at b3 and white knight at h3. White pawn at b2, black knight at c2, white pawn at d2, white pawn at e2, white pawn at f2, white pawn at g2 and white pawn at h2. White knight at b1, white bishop at c1, white king at d1, white bishop at f1 and white rook at h1. Black kingside is the only castle move available. Half move number is 2. Full move number is 10. Black to move.