r2q1bnr/2pk2p1/bpnp1p1p/P3p3/1pP1PP2/3P3P/1PQ3P1/1NB1KBNR w K - 0 13
FEN state: r2q1bnr/2pk2p1/bpnp1p1p/P3p3/1pP1PP2/3P3P/1PQ3P1/1NB1KBNR w K - 0 13 ; Best move: a5b6
The current state of the chess board is: Black rook at a8, black queen at d8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at c7, black king at d7 and black pawn at g7. Black bishop at a6, black pawn at b6, black knight at c6, black pawn at d6, black pawn at f6 and black pawn at h6. White pawn at a5 and black pawn at e5. Black pawn at b4, white pawn at c4, white pawn at e4 and white pawn at f4. White pawn at d3 and white pawn at h3. White pawn at b2, white queen at c2 and white pawn at g2. White knight at b1, white bishop at c1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 0. Full move number is 13. White to move.