r1bqkbr1/1B2npp1/1n2p3/2pp3p/4P2P/5PP1/PPPPK3/RNBQNR2 b q - 0 12
FEN state: r1bqkbr1/1B2npp1/1n2p3/2pp3p/4P2P/5PP1/PPPPK3/RNBQNR2 b q - 0 12 ; Best move: c8b7
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black king at e8, black bishop at f8 and black rook at g8. White bishop at b7, black knight at e7, black pawn at f7 and black pawn at g7. Black knight at b6 and black pawn at e6. Black pawn at c5, black pawn at d5 and black pawn at h5. White pawn at e4 and white pawn at h4. White pawn at f3 and white pawn at g3. White pawn at a2, white pawn at b2, white pawn at c2, white pawn at d2 and white king at e2. White rook at a1, white knight at b1, white bishop at c1, white queen at d1, white knight at e1 and white rook at f1. Black queenside is the only castle move available. Half move number is 0. Full move number is 12. Black to move.