1nb1kb1r/rp1p1p2/2B5/p1p1pnpp/4P3/NP1P2PP/PBPKNP2/R2Q3R b k - 4 12
FEN state: 1nb1kb1r/rp1p1p2/2B5/p1p1pnpp/4P3/NP1P2PP/PBPKNP2/R2Q3R b k - 4 12 ; Best move: b8c6
The current state of the chess board is: Black knight at b8, black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black rook at a7, black pawn at b7, black pawn at d7 and black pawn at f7. White bishop at c6. Black pawn at a5, black pawn at c5, black pawn at e5, black knight at f5, black pawn at g5 and black pawn at h5. White pawn at e4. White knight at a3, white pawn at b3, white pawn at d3, white pawn at g3 and white pawn at h3. White pawn at a2, white bishop at b2, white pawn at c2, white king at d2, white knight at e2 and white pawn at f2. White rook at a1, white queen at d1 and white rook at h1. Black kingside is the only castle move available. Half move number is 4. Full move number is 12. Black to move.