rn2kb1r/1pn1pp2/Q1pq1p2/3p1P1p/2PP2bP/4B3/PP2PK2/2R2BNR w q - 1 18
FEN state: rn2kb1r/1pn1pp2/Q1pq1p2/3p1P1p/2PP2bP/4B3/PP2PK2/2R2BNR w q - 1 18 ; Best move: a6b7
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 h8. Black pawn at b7, black knight at c7, black pawn at e7 and black pawn at f7. White queen at a6, black pawn at c6, black queen at d6 and black pawn at f6. Black pawn at d5, white pawn at f5 and black pawn at h5. White pawn at c4, white pawn at d4, black bishop at g4 and white pawn at h4. White bishop at e3. White pawn at a2, white pawn at b2, white pawn at e2 and white king at f2. White rook at c1, 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 1. Full move number is 18. White to move.