r1bq1br1/pp1p1pn1/2P3p1/N6p/PP3kPP/8/2P1P3/2KR1BNR b - - 0 20
FEN state: r1bq1br1/pp1p1pn1/2P3p1/N6p/PP3kPP/8/2P1P3/2KR1BNR b - - 0 20 ; Best move: f8b4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black bishop at f8 and black rook at g8. Black pawn at a7, black pawn at b7, black pawn at d7, black pawn at f7 and black knight at g7. White pawn at c6 and black pawn at g6. White knight at a5 and black pawn at h5. White pawn at a4, white pawn at b4, black king at f4, white pawn at g4 and white pawn at h4. White pawn at c2 and white pawn at e2. White king at c1, white rook at d1, white bishop 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.