rn2kb2/p2ppp1r/bp5p/q1p3p1/PPP1n3/N2P1PRN/4P1PP/2BQKB1R b Kq - 1 13
FEN state: rn2kb2/p2ppp1r/bp5p/q1p3p1/PPP1n3/N2P1PRN/4P1PP/2BQKB1R b Kq - 1 13 ; Best move: a5b4
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8 and black bishop at f8. Black pawn at a7, black pawn at d7, black pawn at e7, black pawn at f7 and black rook at h7. Black bishop at a6, black pawn at b6 and black pawn at h6. Black queen at a5, black pawn at c5 and black pawn at g5. White pawn at a4, white pawn at b4, white pawn at c4 and black knight at e4. White knight at a3, white pawn at d3, white pawn at f3, white rook at g3 and white knight at h3. White pawn at e2, white pawn at g2 and white pawn at h2. White bishop at c1, white queen at d1, 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 1. Full move number is 13. Black to move.