b2k2nr/2q2ppp/pnp1p3/3p4/2B2P1P/b3P1P1/P1pP4/RNB1K1R1 w Q - 1 18
FEN state: b2k2nr/2q2ppp/pnp1p3/3p4/2B2P1P/b3P1P1/P1pP4/RNB1K1R1 w Q - 1 18 ; Best move: b1a3
The current state of the chess board is: Black bishop at a8, black king at d8, black knight at g8 and black rook at h8. Black queen at c7, black pawn at f7, black pawn at g7 and black pawn at h7. Black pawn at a6, black knight at b6, black pawn at c6 and black pawn at e6. Black pawn at d5. White bishop at c4, white pawn at f4 and white pawn at h4. Black bishop at a3, white pawn at e3 and white pawn at g3. White pawn at a2, black pawn at c2 and white pawn at d2. White rook at a1, white knight at b1, white bishop at c1, white king at e1 and white rook at g1. White queenside is the only castle move available. Half move number is 1. Full move number is 18. White to move.