1rb2bn1/2pnp1p1/pp2k3/1q1p1p1r/1P4pP/P1PPPP2/1R6/RN1QKBN1 w Q - 1 16
FEN state: 1rb2bn1/2pnp1p1/pp2k3/1q1p1p1r/1P4pP/P1PPPP2/1R6/RN1QKBN1 w Q - 1 16 ; Best move: f3g4
The current state of the chess board is: Black rook at b8, black bishop at c8, black bishop at f8 and black knight at g8. Black pawn at c7, black knight at d7, black pawn at e7 and black pawn at g7. Black pawn at a6, black pawn at b6 and black king at e6. Black queen at b5, black pawn at d5, black pawn at f5 and black rook at h5. White pawn at b4, black pawn at g4 and white pawn at h4. White pawn at a3, white pawn at c3, white pawn at d3, white pawn at e3 and white pawn at f3. White rook at b2. White rook at a1, white knight at b1, white queen at d1, 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 1. Full move number is 16. White to move.