Logic Masters Deutschland e.V.

Counting Bulbs

(Published on 9. December 2025, 21:34 by mimec)

This puzzle is easier than most of my puzzles, but it still has a few surprises. It's a bit similar to Different Bulbs, one of my most popular puzzles, but this time, the bulbs are not unique - instead, they double as counting circles. Have fun!

Rules:

  • Normal sudoku rules apply.
  • Digits along each thermometer must increase starting from the bulb end.
  • A digit in a thermometer bulb indicates exactly how many bulbs contain that digit. For example, if there is a 5 in any bulb, then exactly 5 bulbs contain a 5.
  • Digits connected by a white dot are consecutive. Not all dots are given.

Play online on SudokuPad

Solution code: Row 5


Solved by cornish-john, PinkNickels, idanz, SKORP17, jguer, gdc, The Bard, Bjd, Fisherman, jalebc, redovermars, Photyne, Hizuriya, DanishDynamite, brandorando, lancer102rus, unlogical, abihummel, Chiefredhawk, ... henryng, Stephan60H, W1n5t0n, Firmus, Raktor, JVA, pmakholm , 2xdula, deangaudet, me and the paws, timww572, GWilliams00, pepe74287, maan56, zrbakhtiar, Yarglof, Lithium-Ion, thintheboxking, florita
Full list

Comments

on 16. December 2025, 20:03 by PancakePie
What a fun journey! Thank you for making this gem.

on 16. December 2025, 10:28 by davidz32z
Really fun puzzle that stayed just a little tricky all the way through the end! Loved this idea and very well put together, thanks!

on 15. December 2025, 19:42 by Jen118266
Excellent puzzle

on 15. December 2025, 18:34 by philolologue
This was LOADS of fun!! Finished in just a hair over 35 minutes, real brain teaser at some points and yet it kept magically opening up and never got stuck for too long! Thanks, mimec, for posting, and anyone else give it a go!

on 9. December 2025, 22:45 by PinkNickels
Very clever! Fun one. Thanks for sharing.

Difficulty:2
Rating:92 %
Solved:117 times
Observed:2 times
ID:000QH7

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Solution code:

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