1nbq1r1k/1p1p1p1p/8/2p1pPp1/PpPr1P2/8/4P2P/R1BQNBKR b - - 0 21
FEN state: 1nbq1r1k/1p1p1p1p/8/2p1pPp1/PpPr1P2/8/4P2P/R1BQNBKR b - - 0 21 ; Best move: d4d1
The current state of the chess board is: Black knight at b8, black bishop at c8, black queen at d8, black rook at f8 and black king at h8. Black pawn at b7, black pawn at d7, black pawn at f7 and black pawn at h7. Black pawn at c5, black pawn at e5, white pawn at f5 and black pawn at g5. White pawn at a4, black pawn at b4, white pawn at c4, black rook at d4 and white pawn at f4. White pawn at e2 and white pawn at h2. White rook at a1, white bishop at c1, white queen at d1, white knight at e1, white bishop at f1, white king at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 21. Black to move.