rn1k1b1r/p2b1p2/q1p4p/5p2/Pp4N1/R2p3P/1P2PQ2/2B1KBNR w K - 0 21
FEN state: rn1k1b1r/p2b1p2/q1p4p/5p2/Pp4N1/R2p3P/1P2PQ2/2B1KBNR w K - 0 21 ; Best move: a3d3
The current state of the chess board is: Black rook at a8, black knight at b8, black king at d8, black bishop at f8 and black rook at h8. Black pawn at a7, black bishop at d7 and black pawn at f7. Black queen at a6, black pawn at c6 and black pawn at h6. Black pawn at f5. White pawn at a4, black pawn at b4 and white knight at g4. White rook at a3, black pawn at d3 and white pawn at h3. White pawn at b2, white pawn at e2 and white queen at f2. White bishop at c1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 21. White to move.