#199 - FourCells (Different Neighbors)

     Divide the grid into regions of four orthogonally connected cells. Clued cells must have the indicated number of region borders or grid borders surrounding them. Two regions which share an edge may not be the same shape, counting rotations and reflections as the same.

Solve online



Comments

  1. skynetMarch 8, 2021 at 9:35 PM

    How to start/ solve this puzzle type ?

    ReplyDelete
    Replies
    1. Eric FoxMarch 9, 2021 at 12:48 AM

      How to start (in rot13):

      Gur orfg cynpr gb fgneg jbhyq or gur 1 va gur obggbz ebj, fvapr vg nyernql vf gbhpuvat vgf bar rqtr (gur obggbz rqtr bs gur tevq). Guvf zrnaf vg zhfg orybat va gur fnzr ertvba nf gur guerr pryyf nqwnprag gb vg, juvpu gbgnyf sbhe pryyf, urapr cynpvat n shyy hcfvqr-qbja G grgebzvab.

      Nsgre gung, gur irel obggbz yrsg pryy unf gb pbzr hc gb gnxr zber pryyf, naq pna'g nibvq gnxvat gur pryy jvgu gur 2 va vg orpnhfr vg jbhyq bgurejvfr unir gb fanxr nebhaq vg (znxvat na F grgebzvab), juvpu sbeprf gur 2 gb unir guerr rqtrf: gur obggbz naq evtug sebz gur bhgfvqr bs gur F grgebzvab naq gur yrsg sebz gur tevq obeqre.

      Hope I explained that well!

      Delete
    2. skynetMarch 11, 2021 at 12:06 AM

      Thanks Eric Fox. Completed the puzzle.I somehow got confused because of the word regions in the rules. Wouldn't it be better just to state " Clued cells must have the indicated number of grid borders surrounding them...." ? .

      Delete
    3. Eric FoxMarch 12, 2021 at 5:32 PM

      Ah, yeah I can see how that sentence might be misunderstood. I wanted to make it clear that the outside of the grid also counts as a boundary. I'll reword that, thanks!

      Delete

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