3qkb1r/pr1ppppp/bp6/2p1P3/2Bn1P2/PPP2nQ1/N4KPP/R1B3NR b k - 0 15
FEN state: 3qkb1r/pr1ppppp/bp6/2p1P3/2Bn1P2/PPP2nQ1/N4KPP/R1B3NR b k - 0 15 ; Best move: a6c4
The current state of the chess board is: Black queen at d8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black rook at b7, black pawn at d7, black pawn at e7, black pawn at f7, black pawn at g7 and black pawn at h7. Black bishop at a6 and black pawn at b6. Black pawn at c5 and white pawn at e5. White bishop at c4, black knight at d4 and white pawn at f4. White pawn at a3, white pawn at b3, white pawn at c3, black knight at f3 and white queen at g3. White knight at a2, white king at f2, white pawn at g2 and white pawn at h2. White rook at a1, white bishop at c1, white knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 0. Full move number is 15. Black to move.