r1b1kb1N/p1qp2p1/1p6/n3p1Bp/2Pp4/PPNQ4/R3PPPP/4KB1R b Kq - 0 13
FEN state: r1b1kb1N/p1qp2p1/1p6/n3p1Bp/2Pp4/PPNQ4/R3PPPP/4KB1R b Kq - 0 13 ; Best move: d7d5
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8 and white knight at h8. Black pawn at a7, black queen at c7, black pawn at d7 and black pawn at g7. Black pawn at b6. Black knight at a5, black pawn at e5, white bishop at g5 and black pawn at h5. White pawn at c4 and black pawn at d4. White pawn at a3, white pawn at b3, white knight at c3 and white queen at d3. White rook at a2, white pawn at e2, white pawn at f2, white pawn at g2 and white pawn at h2. White king at e1, white bishop at f1 and white rook at h1. White kingside and black queenside castles are available. Half move number is 0. Full move number is 13. Black to move.