r3kb2/3b1pp1/pp3p1n/2pP4/q6r/4Pp1B/PPnP1P2/R1B2K2 w q - 4 20
FEN state: r3kb2/3b1pp1/pp3p1n/2pP4/q6r/4Pp1B/PPnP1P2/R1B2K2 w q - 4 20 ; Best move: f1g1
The current state of the chess board is: Black rook at a8, black king at e8 and black bishop at f8. Black bishop at d7, black pawn at f7 and black pawn at g7. Black pawn at a6, black pawn at b6, black pawn at f6 and black knight at h6. Black pawn at c5 and white pawn at d5. Black queen at a4 and black rook at h4. White pawn at e3, black pawn at f3 and white bishop at h3. White pawn at a2, white pawn at b2, black knight at c2, white pawn at d2 and white pawn at f2. White rook at a1, white bishop at c1 and white king at f1. Black queenside is the only castle move available. Half move number is 4. Full move number is 20. White to move.