rn3bnr/3kq3/p1p5/1pPppp2/NP3P1p/4PQ2/PB1P3P/2KR1bNR b - - 1 21
FEN state: rn3bnr/3kq3/p1p5/1pPppp2/NP3P1p/4PQ2/PB1P3P/2KR1bNR b - - 1 21 ; Best move: b5a4
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at f8, black knight at g8 and black rook at h8. Black king at d7 and black queen at e7. Black pawn at a6 and black pawn at c6. Black pawn at b5, white pawn at c5, black pawn at d5, black pawn at e5 and black pawn at f5. White knight at a4, white pawn at b4, white pawn at f4 and black pawn at h4. White pawn at e3 and white queen at f3. White pawn at a2, white bishop at b2, white pawn at d2 and white pawn at h2. White king at c1, white rook at d1, black bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 1. Full move number is 21. Black to move.