rnbq3r/2pp1k1p/4pp2/1pb1B1pP/pn6/QP1P2NN/P3PPP1/R3KBR1 w Q - 4 17
FEN state: rnbq3r/2pp1k1p/4pp2/1pb1B1pP/pn6/QP1P2NN/P3PPP1/R3KBR1 w Q - 4 17 ; Best move: a3c1
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at d8 and black rook at h8. Black pawn at c7, black pawn at d7, black king at f7 and black pawn at h7. Black pawn at e6 and black pawn at f6. Black pawn at b5, black bishop at c5, white bishop at e5, black pawn at g5 and white pawn at h5. Black pawn at a4 and black knight at b4. White queen at a3, white pawn at b3, white pawn at d3, white knight at g3 and white knight at h3. White pawn at a2, white pawn at e2, white pawn at f2 and white pawn at g2. White rook at a1, 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 4. Full move number is 17. White to move.