Go to https://rubuky.com/tool/2024-11-02-GapChallenge/ for an online usage.
Please give me a star🌟 leave a comment below on my webpage if you find this useful.
Let's use the most difficult level 5 as an example:
We first change the number of rows and columns of the solver to "5":
We then enter the existing patterns using numbers:
Alternatively, we can also snip the patterns from the screen and paste them into the solver:
Then hit Enter (if you are using a computer) or press the Submit button. If the problem is entered correctly, a full solution will be displayed:
In this case, 4, which corresponds to the green trigangle, is the answer we are looking for.
In the end, we can hit ~/` if on a computer, or hit Clear to clear the problem and move on to the next one.




