rnb1kb2/p3n2r/4P3/1p1p1ppp/P1Pq4/Np2P1PB/2Q2K1P/1RB1N2R w q - 0 17
FEN state: rnb1kb2/p3n2r/4P3/1p1p1ppp/P1Pq4/Np2P1PB/2Q2K1P/1RB1N2R w q - 0 17 ; Best move: b1b3
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at e8 and black bishop at f8. Black pawn at a7, black knight at e7 and black rook at h7. White pawn at e6. Black pawn at b5, black pawn at d5, black pawn at f5, black pawn at g5 and black pawn at h5. White pawn at a4, white pawn at c4 and black queen at d4. White knight at a3, black pawn at b3, white pawn at e3, white pawn at g3 and white bishop at h3. White queen at c2, white king at f2 and white pawn at h2. White rook at b1, white bishop at c1, white knight at e1 and white rook at h1. Black queenside is the only castle move available. Half move number is 0. Full move number is 17. White to move.