4qb1r/2pppk1p/b3r2n/np3PpP/Np5N/P1PK2P1/1B1PBP2/1R1QR3 b - - 0 20
FEN state: 4qb1r/2pppk1p/b3r2n/np3PpP/Np5N/P1PK2P1/1B1PBP2/1R1QR3 b - - 0 20 ; Best move: b5a4
The current state of the chess board is: Black queen at e8, black bishop at f8 and black rook at h8. Black pawn at c7, black pawn at d7, black pawn at e7, black king at f7 and black pawn at h7. Black bishop at a6, black rook at e6 and black knight at h6. Black knight at a5, black pawn at b5, white pawn at f5, black pawn at g5 and white pawn at h5. White knight at a4, black pawn at b4 and white knight at h4. White pawn at a3, white pawn at c3, white king at d3 and white pawn at g3. White bishop at b2, white pawn at d2, white bishop at e2 and white pawn at f2. White rook at b1, white queen at d1 and white rook at e1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. Black to move.