2r2b1r/pp1k2pp/q2p1np1/2p1p3/N3PP2/1PPP1N1P/nP1B2P1/R2K1B1R b - - 1 21
FEN state: 2r2b1r/pp1k2pp/q2p1np1/2p1p3/N3PP2/1PPP1N1P/nP1B2P1/R2K1B1R b - - 1 21 ; Best move: b7b5
The current state of the chess board is: Black rook at c8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at b7, black king at d7, black pawn at g7 and black pawn at h7. Black queen at a6, black pawn at d6, black knight at f6 and black pawn at g6. Black pawn at c5 and black pawn at e5. White knight at a4, white pawn at e4 and white pawn at f4. White pawn at b3, white pawn at c3, white pawn at d3, white knight at f3 and white pawn at h3. Black knight at a2, white pawn at b2, white bishop at d2 and white pawn at g2. White rook at a1, white king at d1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. Black to move.