rn1k2nr/1pp2p2/3qp1pb/1b1p2Pp/1p5P/NR1PPP2/2P5/B2BK1NR w K - 2 20
FEN state: rn1k2nr/1pp2p2/3qp1pb/1b1p2Pp/1p5P/NR1PPP2/2P5/B2BK1NR w K - 2 20 ; Best move: a1h8
The current state of the chess board is: Black rook at a8, black knight at b8, black king at d8, black knight at g8 and black rook at h8. Black pawn at b7, black pawn at c7 and black pawn at f7. Black queen at d6, black pawn at e6, black pawn at g6 and black bishop at h6. Black bishop at b5, black pawn at d5, white pawn at g5 and black pawn at h5. Black pawn at b4 and white pawn at h4. White knight at a3, white rook at b3, white pawn at d3, white pawn at e3 and white pawn at f3. White pawn at c2. White bishop at a1, white bishop at d1, white king at e1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 2. Full move number is 20. White to move.