The puzzle consists of 12 random integers. Four of the integers sum up to zero (i.e., zilch). To solve the puzzle, tap/click on the four integers that sum up to zero.
When you select an integer, its button color will change from blue to gray. You can unselect an integer by clicking its button again (resulting in its button color changing from gray back to blue). If you have four integers selected, then you can't select a fifth integer until you unselect one of the four integers.
The link for Zilch is https://thelyonsfamily.us/zilch/.
Zilch is a math puzzle based on the subset sum problem.
If you have any feedback or questions, please send an email to <name_of_game>@thelyonsfamily.us (where '<name_of_game>' is 'zilch').
If you tap/click the 'Hint' button twice, then any gray buttons will change back to blue, and one of the integers in the solution will be revealed by changing its button color to black.
You can use the 'Hint' button multiple times.
You can let your friends know that you're playing Zilch (e.g., via text, email, etc.), by clicking/tapping the white 'Share ⁖' button.
A big thanks to my wife Lisa for her valuable feedback!
Version 2025-03-23T13:49:24.