rn2kb1r/p1p2b1p/q6n/1pp1pP2/N4p2/P3P3/1P1P3P/1RBQKBNR b - - 2 20
FEN state: rn2kb1r/p1p2b1p/q6n/1pp1pP2/N4p2/P3P3/1P1P3P/1RBQKBNR b - - 2 20 ; Best move: a6a4
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at c7, black bishop at f7 and black pawn at h7. Black queen at a6 and black knight at h6. Black pawn at b5, black pawn at c5, black pawn at e5 and white pawn at f5. White knight at a4 and black pawn at f4. White pawn at a3 and white pawn at e3. White pawn at b2, white pawn at d2 and white pawn at h2. White rook at b1, white bishop at c1, white queen at d1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 20. Black to move.