1n2kbn1/rb1pp3/4B1pr/ppp1Q1Pp/P2Pq3/RPP2p2/1B3P1P/1N3KNR b - - 0 20
FEN state: 1n2kbn1/rb1pp3/4B1pr/ppp1Q1Pp/P2Pq3/RPP2p2/1B3P1P/1N3KNR b - - 0 20 ; Best move: e4b1
The current state of the chess board is: Black knight at b8, black king at e8, black bishop at f8 and black knight at g8. Black rook at a7, black bishop at b7, black pawn at d7 and black pawn at e7. White bishop at e6, black pawn at g6 and black rook at h6. Black pawn at a5, black pawn at b5, black pawn at c5, white queen at e5, white pawn at g5 and black pawn at h5. White pawn at a4, white pawn at d4 and black queen at e4. White rook at a3, white pawn at b3, white pawn at c3 and black pawn at f3. White bishop at b2, white pawn at f2 and white pawn at h2. White knight at b1, white king at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 20. Black to move.