2bn2nr/1r1pqk2/p2P3p/PQ2Ppp1/4P3/2P2PPB/3N3P/RNB2K1R b - - 0 20
FEN state: 2bn2nr/1r1pqk2/p2P3p/PQ2Ppp1/4P3/2P2PPB/3N3P/RNB2K1R b - - 0 20 ; Best move: a6b5
The current state of the chess board is: Black bishop at c8, black knight at d8, black knight at g8 and black rook at h8. Black rook at b7, black pawn at d7, black queen at e7 and black king at f7. Black pawn at a6, white pawn at d6 and black pawn at h6. White pawn at a5, white queen at b5, white pawn at e5, black pawn at f5 and black pawn at g5. White pawn at e4. White pawn at c3, white pawn at f3, white pawn at g3 and white bishop at h3. White knight at d2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white king at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. Black to move.