3qkbnr/2p1p1p1/1p6/5p1p/r2p2PP/1PN5/RB1PPP1N/4KB1R w K - 1 20
FEN state: 3qkbnr/2p1p1p1/1p6/5p1p/r2p2PP/1PN5/RB1PPP1N/4KB1R w K - 1 20 ; Best move: c3a4
The current state of the chess board is: Black queen at d8, black king at e8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at c7, black pawn at e7 and black pawn at g7. Black pawn at b6. Black pawn at f5 and black pawn at h5. Black rook at a4, black pawn at d4, white pawn at g4 and white pawn at h4. White pawn at b3 and white knight at c3. White rook at a2, white bishop at b2, white pawn at d2, white pawn at e2, white pawn at f2 and white knight at h2. White king at e1, white bishop at f1 and white rook at h1. White kingside is the only castle move available. Half move number is 1. Full move number is 20. White to move.