r1k2b1r/p1pp1Q1p/n3p1p1/1p3nB1/3PP1P1/N2b4/PPP1BP1P/1R2K1NR b K - 2 13
FEN state: r1k2b1r/p1pp1Q1p/n3p1p1/1p3nB1/3PP1P1/N2b4/PPP1BP1P/1R2K1NR b K - 2 13 ; Best move: f8b4
The current state of the chess board is: Black rook at a8, black king at c8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at d7, white queen at f7 and black pawn at h7. Black knight at a6, black pawn at e6 and black pawn at g6. Black pawn at b5, black knight at f5 and white bishop at g5. White pawn at d4, white pawn at e4 and white pawn at g4. White knight at a3 and black bishop at d3. White pawn at a2, white pawn at b2, white pawn at c2, white bishop at e2, white pawn at f2 and white pawn at h2. White rook at b1, white king at e1, white knight at g1 and white rook at h1. White kingside is the only castle move available. Half move number is 2. Full move number is 13. Black to move.