rn1q2r1/3k2bp/1p2pp1n/1b4p1/1P5N/N1P1P2P/P2P1PP1/R1B1KBR1 w Q - 0 15
FEN state: rn1q2r1/3k2bp/1p2pp1n/1b4p1/1P5N/N1P1P2P/P2P1PP1/R1B1KBR1 w Q - 0 15 ; Best move: f1b5
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at d8 and black rook at g8. Black king at d7, black bishop at g7 and black pawn at h7. Black pawn at b6, black pawn at e6, black pawn at f6 and black knight at h6. Black bishop at b5 and black pawn at g5. White pawn at b4 and white knight at h4. White knight at a3, white pawn at c3, white pawn at e3 and white pawn at h3. White pawn at a2, white pawn at d2, white pawn at f2 and white pawn at g2. White rook at a1, white bishop at c1, white king at e1, white bishop at f1 and white rook at g1. White queenside is the only castle move available. Half move number is 0. Full move number is 15. White to move.