r1k4r/p2q1pNp/1pp1pn1b/2n2Pp1/1P2p3/P2P4/1BP2NP1/R2QKB1R w KQ - 0 21
FEN state: r1k4r/p2q1pNp/1pp1pn1b/2n2Pp1/1P2p3/P2P4/1BP2NP1/R2QKB1R w KQ - 0 21 ; Best move: h1h6
The current state of the chess board is: Black rook at a8, black king at c8 and black rook at h8. Black pawn at a7, black queen at d7, black pawn at f7, white knight at g7 and black pawn at h7. Black pawn at b6, black pawn at c6, black pawn at e6, black knight at f6 and black bishop at h6. Black knight at c5, white pawn at f5 and black pawn at g5. White pawn at b4 and black pawn at e4. White pawn at a3 and white pawn at d3. White bishop at b2, white pawn at c2, white knight at f2 and white pawn at g2. White rook at a1, white queen at d1, white king at e1, white bishop at f1 and white rook at h1. White kingside and white queenside castles are available. Half move number is 0. Full move number is 21. White to move.