1rb2bnr/1pkpp1pp/5p2/p1p5/PqP1P1BQ/N2PB3/1PK2PP1/R5nR b - - 11 20
FEN state: 1rb2bnr/1pkpp1pp/5p2/p1p5/PqP1P1BQ/N2PB3/1PK2PP1/R5nR b - - 11 20 ; Best move: b4a4
The current state of the chess board is: Black rook at b8, black bishop at c8, black bishop at f8, black knight at g8 and black rook at h8. Black pawn at b7, black king at c7, black pawn at d7, black pawn at e7, black pawn at g7 and black pawn at h7. Black pawn at f6. Black pawn at a5 and black pawn at c5. White pawn at a4, black queen at b4, white pawn at c4, white pawn at e4, white bishop at g4 and white queen at h4. White knight at a3, white pawn at d3 and white bishop at e3. White pawn at b2, white king at c2, white pawn at f2 and white pawn at g2. White rook at a1, black knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 11. Full move number is 20. Black to move.