Solving of a hard Survo Puzzle can take several hours.
Now it is possible (by using Freeware version of Survo)
to play a quick game where a
The task is to solve quickly an
In a Survo session the quick games are found by activating a command
A partially filled
Since it should be filled by the number 12-1-4=7, that number will be put to this place by clicking '7' in the row of small numbers above the grid. The score attained so far (163) is displayed in red in the top right corner.
The Survo Puzzles given randomly by Survo as quick games are always open and
they have a unique solution. Of course, you may solve them
without a Survo's support by putting aside mere row and column sums
when the game is started and by breaking the game immediately by
Then the task is not quite easy since the degree of difficulty
Main page of Survo Puzzles