1r1qkbn1/ppp1ppp1/n5r1/2Pp1b1p/PP1P3P/N3B2N/4PPP1/R2QKBR1 b Q - 4 12
FEN state: 1r1qkbn1/ppp1ppp1/n5r1/2Pp1b1p/PP1P3P/N3B2N/4PPP1/R2QKBR1 b Q - 4 12 ; Best move: f5h3
The current state of the chess board is: Black rook at b8, black queen at d8, black king at e8, black bishop at f8 and black knight at g8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at e7, black pawn at f7 and black pawn at g7. Black knight at a6 and black rook at g6. White pawn at c5, black pawn at d5, black bishop at f5 and black pawn at h5. White pawn at a4, white pawn at b4, white pawn at d4 and white pawn at h4. White knight at a3, white bishop at e3 and white knight at h3. White pawn at e2, white pawn at f2 and white pawn at g2. White rook at a1, white queen at d1, white king at e1, white bishop at f1 and white rook at g1. White queenside is the only castle move available. Half move number is 4. Full move number is 12. Black to move.