r1b2k1r/2pp1pp1/p1nb4/1pP1p2p/1P2N2R/3BP3/P1Q2PP1/R1B1K1N1 w Q - 1 13
FEN state: r1b2k1r/2pp1pp1/p1nb4/1pP1p2p/1P2N2R/3BP3/P1Q2PP1/R1B1K1N1 w Q - 1 13 ; Best move: c5d6
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at f8 and black rook at h8. Black pawn at c7, black pawn at d7, black pawn at f7 and black pawn at g7. Black pawn at a6, black knight at c6 and black bishop at d6. Black pawn at b5, white pawn at c5, black pawn at e5 and black pawn at h5. White pawn at b4, white knight at e4 and white rook at h4. White bishop at d3 and white pawn at e3. White pawn at a2, white queen at c2, white pawn at f2 and white pawn at g2. White rook at a1, white bishop at c1, white king at e1 and white knight at g1. White queenside is the only castle move available. Half move number is 1. Full move number is 13. White to move.