Microsoft has recently broken SUDOKU in their zeal to impose different advertisements every few seconds. This is especially annoying for those of us that suffer low internet bandwidth.
When playing free sudoku, the advertisement picture goes black and the game board does not respond to mouse clicks until the new advertisement appears and just moments later this happens again. These constant faults make the game almost unplayable and add several minutes to the time.
It seems like this fault has gotten much worse in the past week because the advertisements change much more frequently than they used to and loading new pictures has become a higher priority foreground process than playing the game.
Whoever made these changes should be fired