r1k3nr/pbNqb2p/2np4/1p2pPp1/6P1/PP3P1N/2PP1K1P/R1BQ1B1R w - - 0 13
FEN state: r1k3nr/pbNqb2p/2np4/1p2pPp1/6P1/PP3P1N/2PP1K1P/R1BQ1B1R w - - 0 13 ; Best move: c7e6
The current state of the chess board is: Black rook at a8, black king at c8, black knight at g8 and black rook at h8. Black pawn at a7, black bishop at b7, white knight at c7, black queen at d7, black bishop at e7 and black pawn at h7. Black knight at c6 and black pawn at d6. Black pawn at b5, black pawn at e5, white pawn at f5 and black pawn at g5. White pawn at g4. White pawn at a3, white pawn at b3, white pawn at f3 and white knight at h3. White pawn at c2, white pawn at d2, white king at f2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at d1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 13. White to move.