1r1qkb1r/2pp1pp1/b3p3/pp2nB2/P6p/N1KP2Pn/RPP1QP1P/2B4R b k - 3 15
FEN state: 1r1qkb1r/2pp1pp1/b3p3/pp2nB2/P6p/N1KP2Pn/RPP1QP1P/2B4R b k - 3 15 ; Best move: f8b4
The current state of the chess board is: Black rook at b8, black queen at d8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at c7, black pawn at d7, black pawn at f7 and black pawn at g7. Black bishop at a6 and black pawn at e6. Black pawn at a5, black pawn at b5, black knight at e5 and white bishop at f5. White pawn at a4 and black pawn at h4. White knight at a3, white king at c3, white pawn at d3, white pawn at g3 and black knight at h3. White rook at a2, white pawn at b2, white pawn at c2, white queen at e2, white pawn at f2 and white pawn at h2. White bishop at c1 and white rook at h1. Black kingside is the only castle move available. Half move number is 3. Full move number is 15. Black to move.