rnb2k1r/pp1p2pp/2p4n/4pp2/1PB1QP2/R1P1P1qP/3P2P1/1NBK2NR b - - 2 13
FEN state: rnb2k1r/pp1p2pp/2p4n/4pp2/1PB1QP2/R1P1P1qP/3P2P1/1NBK2NR b - - 2 13 ; Best move: f5e4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black king at f8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at d7, black pawn at g7 and black pawn at h7. Black pawn at c6 and black knight at h6. Black pawn at e5 and black pawn at f5. White pawn at b4, white bishop at c4, white queen at e4 and white pawn at f4. White rook at a3, white pawn at c3, white pawn at e3, black queen at g3 and white pawn at h3. White pawn at d2 and white pawn at g2. White knight at b1, white bishop at c1, white king at d1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 13. Black to move.