Terra X by JinHoo Ahn
or solve online (using our beta test of Penpa-Edit tools)
Theme: 0 to 7
Author/Opus: This is the 53rd puzzle from our contributing puzzlemaster JinHoo Ahn.
Rules: Place a number from 0 to 9 into each area so that no two areas that touch orthogonally share the same number. Wherever four areas meet at a point (marked with dots as a visual aid), the numbers in those areas must add up to 10.
Also, see this example:
Difficulty: 2 stars
Time Standards (highlight to view): Grandmaster = 1:45, Master = 3:00, Expert = 6:00
Solution: PDF and solving video.
Note: Follow this link for other less common Number Placement puzzles.
LOVED THIS PUZZLE! Didn’t know this kind existed. Amazing what the human mind can come up with. Don’t know if it’s because it’s a new type of puzzle, but I feel it’s more like a 3 star.
Cool puzzle, I like the fresh idea. Fun to have to invent new techniques 🙂
I’ve never seen this before, but I enjoyed it. V yvxrq ubj gur chmmyr frrzrq n yvggyr uneq gb crargengr hagvy lbh ernyvmr ubj qbzvabf frcnengrq ol n tnc ner eryngrq.