Terra X by JinHoo Ahn

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:

Terra X by Serkan Yürekli

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.

  • R says:

    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.

  • Shawn L says:

    Cool puzzle, I like the fresh idea. Fun to have to invent new techniques 🙂

  • zmaj says:

    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.

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