rn1q1b2/3kppr1/BP1p2pp/8/3p4/P1P1PPnP/R2K2PR/1NBb2N1 b - - 0 23
FEN state: rn1q1b2/3kppr1/BP1p2pp/8/3p4/P1P1PPnP/R2K2PR/1NBb2N1 b - - 0 23 ; Best move: a8a6
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at d8 and black bishop at f8. Black king at d7, black pawn at e7, black pawn at f7 and black rook at g7. White bishop at a6, white pawn at b6, black pawn at d6, black pawn at g6 and black pawn at h6. Black pawn at d4. White pawn at a3, white pawn at c3, white pawn at e3, white pawn at f3, black knight at g3 and white pawn at h3. White rook at a2, white king at d2, white pawn at g2 and white rook at h2. White knight at b1, white bishop at c1, black bishop at d1 and white knight at g1. Both players have exhausted their castles. Half move number is 0. Full move number is 23. Black to move.