rnb2knr/3pp2p/1pp5/pq2b1pP/P1PP1B2/1Q4p1/1P1NPP1R/R3KBN1 w Q - 0 17
FEN state: rnb2knr/3pp2p/1pp5/pq2b1pP/P1PP1B2/1Q4p1/1P1NPP1R/R3KBN1 w Q - 0 17 ; Best move: c4b5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at f8, black knight at g8 and black rook at h8. Black pawn at d7, black pawn at e7 and black pawn at h7. Black pawn at b6 and black pawn at c6. Black pawn at a5, black queen at b5, black bishop at e5, black pawn at g5 and white pawn at h5. White pawn at a4, white pawn at c4, white pawn at d4 and white bishop at f4. White queen at b3 and black pawn at g3. White pawn at b2, white knight at d2, white pawn at e2, white pawn at f2 and white rook at h2. White rook at a1, white king at e1, white bishop at f1 and white knight at g1. White queenside is the only castle move available. Half move number is 0. Full move number is 17. White to move.