r1n1kbn1/4r3/p2p2pp/q1p1pp1P/bpP1N3/RQNPP1PB/1P3PR1/2BK4 w q - 3 25
FEN state: r1n1kbn1/4r3/p2p2pp/q1p1pp1P/bpP1N3/RQNPP1PB/1P3PR1/2BK4 w q - 3 25 ; Best move: a3a4
The current state of the chess board is: Black rook at a8, black knight at c8, black king at e8, black bishop at f8 and black knight at g8. Black rook at e7. Black pawn at a6, black pawn at d6, black pawn at g6 and black pawn at h6. Black queen at a5, black pawn at c5, black pawn at e5, black pawn at f5 and white pawn at h5. Black bishop at a4, black pawn at b4, white pawn at c4 and white knight at e4. White rook at a3, white queen at b3, white knight at c3, white pawn at d3, white pawn at e3, white pawn at g3 and white bishop at h3. White pawn at b2, white pawn at f2 and white rook at g2. White bishop at c1 and white king at d1. Black queenside is the only castle move available. Half move number is 3. Full move number is 25. White to move.