1r2k1nr/p4pbp/b1p1p3/2Bp2p1/1qpPP2P/PP3Q1N/2P2P1n/R3KB1R w K - 1 22
FEN state: 1r2k1nr/p4pbp/b1p1p3/2Bp2p1/1qpPP2P/PP3Q1N/2P2P1n/R3KB1R w K - 1 22 ; Best move: a3b4
The current state of the chess board is: Black rook at b8, black king at e8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at f7, black bishop at g7 and black pawn at h7. Black bishop at a6, black pawn at c6 and black pawn at e6. White bishop at c5, black pawn at d5 and black pawn at g5. Black queen at b4, black pawn at c4, white pawn at d4, white pawn at e4 and white pawn at h4. White pawn at a3, white pawn at b3, white queen at f3 and white knight at h3. White pawn at c2, white pawn at f2 and black knight at h2. White rook at a1, 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 22. White to move.