r4bnr/pp2pkpp/2p1bp2/PNnp2q1/3PP1P1/2K5/1PP4P/1RBQ1BNR b - - 4 13
FEN state: r4bnr/pp2pkpp/2p1bp2/PNnp2q1/3PP1P1/2K5/1PP4P/1RBQ1BNR b - - 4 13 ; Best move: c5e4
The current state of the chess board is: Black rook at a8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at e7, black king at f7, black pawn at g7 and black pawn at h7. Black pawn at c6, black bishop at e6 and black pawn at f6. White pawn at a5, white knight at b5, black knight at c5, black pawn at d5 and black queen at g5. White pawn at d4, white pawn at e4 and white pawn at g4. White king at c3. White pawn at b2, white pawn at c2 and white pawn at h2. White rook at b1, white bishop at c1, white queen at d1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 13. Black to move.