rnb4r/1pppbkp1/7P/p6n/4PP2/7B/PqPNQ2P/3RK2R w K - 2 21
FEN state: rnb4r/1pppbkp1/7P/p6n/4PP2/7B/PqPNQ2P/3RK2R w K - 2 21 ; Best move: e2h5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8 and black rook at h8. Black pawn at b7, black pawn at c7, black pawn at d7, black bishop at e7, black king at f7 and black pawn at g7. White pawn at h6. Black pawn at a5 and black knight at h5. White pawn at e4 and white pawn at f4. White bishop at h3. White pawn at a2, black queen at b2, white pawn at c2, white knight at d2, white queen at e2 and white pawn at h2. White rook at d1, white king at e1 and white rook at h1. White kingside is the only castle move available. Half move number is 2. Full move number is 21. White to move.