1nb1kb2/3ppppr/1pq4n/2P4p/2r1P1P1/5P1N/P1PP3P/1RBQK2R w K - 3 17
FEN state: 1nb1kb2/3ppppr/1pq4n/2P4p/2r1P1P1/5P1N/P1PP3P/1RBQK2R w K - 3 17 ; Best move: b1b6
The current state of the chess board is: Black knight at b8, black bishop at c8, black king at e8 and black bishop at f8. Black pawn at d7, black pawn at e7, black pawn at f7, black pawn at g7 and black rook at h7. Black pawn at b6, black queen at c6 and black knight at h6. White pawn at c5 and black pawn at h5. Black rook at c4, white pawn at e4 and white pawn at g4. White pawn at f3 and white knight at h3. White pawn at a2, white pawn at c2, white pawn at d2 and white pawn at h2. White rook at b1, white bishop at c1, white queen at d1, white king at e1 and white rook at h1. White kingside is the only castle move available. Half move number is 3. Full move number is 17. White to move.