rnb2k1r/1pqp1ppp/p2b4/2pNp3/2B1P3/2P2Pn1/PP1P1N1P/R1BQKR2 b Q - 0 10
FEN state: rnb2k1r/1pqp1ppp/p2b4/2pNp3/2B1P3/2P2Pn1/PP1P1N1P/R1BQKR2 b Q - 0 10 ; Best move: g3f1
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at f8 and black rook at h8. Black pawn at b7, black queen at c7, black pawn at d7, black pawn at f7, black pawn at g7 and black pawn at h7. Black pawn at a6 and black bishop at d6. Black pawn at c5, white knight at d5 and black pawn at e5. White bishop at c4 and white pawn at e4. White pawn at c3, white pawn at f3 and black knight at g3. White pawn at a2, white pawn at b2, white pawn at d2, white knight at f2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at d1, white king at e1 and white rook at f1. White queenside is the only castle move available. Half move number is 0. Full move number is 10. Black to move.