r1b1kb1r/3n1p1p/3qpn2/1ppp4/p1N2BP1/1P1PP3/P1PK1P1P/R1Q2BNR b kq - 3 13
FEN state: r1b1kb1r/3n1p1p/3qpn2/1ppp4/p1N2BP1/1P1PP3/P1PK1P1P/R1Q2BNR b kq - 3 13 ; Best move: d6a6
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 black rook at h8. Black knight at d7, black pawn at f7 and black pawn at h7. Black queen at d6, black pawn at e6 and black knight at f6. Black pawn at b5, black pawn at c5 and black pawn at d5. Black pawn at a4, white knight at c4, white bishop at f4 and white pawn at g4. White pawn at b3, white pawn at d3 and white pawn at e3. White pawn at a2, white pawn at c2, white king at d2, white pawn at f2 and white pawn at h2. White rook at a1, white queen at c1, white bishop at f1, white knight at g1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 3. Full move number is 13. Black to move.