The verification algorithm has been changed
There is no longer a binding to a pre-generated variant. By increasing the level of difficulty, you also increase the variability of the solution.
Developer posts and news about this game.

There is no longer a binding to a pre-generated variant. By increasing the level of difficulty, you also increase the variability of the solution.

Size and difficalty automatically saved when applied. The next time the game is launched, they will automatically be applied.

Solving the puzzle will bring a little more joy. ːsteamhappyː

In the global leaderboards/leaderboards of friends, added statistics on the time for which the puzzle is solved. Lists are divided by size and difficulty.