rn2kbr1/1b2p1pp/3B4/p2p4/1p1K2P1/1P1PQ3/P1P1P1PP/RN3BNR b q - 0 18
FEN state: rn2kbr1/1b2p1pp/3B4/p2p4/1p1K2P1/1P1PQ3/P1P1P1PP/RN3BNR b q - 0 18 ; Best move: b8c6
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8 and black rook at g8. Black bishop at b7, black pawn at e7, black pawn at g7 and black pawn at h7. White bishop at d6. Black pawn at a5 and black pawn at d5. Black pawn at b4, white king at d4 and white pawn at g4. White pawn at b3, white pawn at d3 and white queen at e3. White pawn at a2, white pawn at c2, white pawn at e2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at f1, white knight at g1 and white rook at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 18. Black to move.