r1b2bnr/p1ppk3/P1B4p/2q1p1P1/2PQ4/R5P1/1P1PK2P/1NB3NR b - - 4 20
FEN state: r1b2bnr/p1ppk3/P1B4p/2q1p1P1/2PQ4/R5P1/1P1PK2P/1NB3NR b - - 4 20 ; Best move: e5d4
The current state of the chess board is: Black rook at a8, black bishop at c8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at a7, black pawn at c7, black pawn at d7 and black king at e7. White pawn at a6, white bishop at c6 and black pawn at h6. Black queen at c5, black pawn at e5 and white pawn at g5. White pawn at c4 and white queen at d4. White rook at a3 and white pawn at g3. White pawn at b2, white pawn at d2, white king at e2 and white pawn at h2. White knight at b1, white bishop at c1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 4. Full move number is 20. Black to move.