rq2bb1r/pB2kn2/n2pP2p/p3Ppp1/1P3PPP/R1Q4R/2P5/1NB1K1N1 b - - 3 20
FEN state: rq2bb1r/pB2kn2/n2pP2p/p3Ppp1/1P3PPP/R1Q4R/2P5/1NB1K1N1 b - - 3 20 ; Best move: b8b7
The current state of the chess board is: Black rook at a8, black queen at b8, black bishop at e8, black bishop at f8 and black rook at h8. Black pawn at a7, white bishop at b7, black king at e7 and black knight at f7. Black knight at a6, black pawn at d6, white pawn at e6 and black pawn at h6. Black pawn at a5, white pawn at e5, black pawn at f5 and black pawn at g5. White pawn at b4, white pawn at f4, white pawn at g4 and white pawn at h4. White rook at a3, white queen at c3 and white rook at h3. White pawn at c2. White knight at b1, white bishop at c1, white king at e1 and white knight at g1. Both players have exhausted their castles. Half move number is 3. Full move number is 20. Black to move.