Hot on the heels of the second challenge, here's another gem of a puzzle to ponder.
Using the solutions per day formula...
Haunted Manor - 271 days, 22 solved - 0.08
CodinDice - 89 days, 12 solved - 0.13
Squares order - 277 days, 40 solved - 0.14
Haunted Manor (the subject of the first challenge) is still on top. Next is the very fun CodinDice, but I've made the executive decision that it hasn't been around long enough (89 days) to be featured yet. Maybe next month...
So that leads us to Squares order. This simple and elegant conundrum (provided by master puzzle craftsman, @VilBoub) is described in 3 short sentences:
Squares have been drawn with ASCII characters on a grid.
The objective is to find each of their sizes and in which order they were drawn.
(Each square overlaps another one.)
Sounds simple enough? Obviously not! According to the puzzle's summary page, only 23% of people who have attempted the puzzle have succeeded in solving it. Here is a list of published solutions at this time:
Want to add your name to the list? I honestly think that Squares order is more accessible than either of the two previous challenge targets. Give it a shot!