Fibreglass Acoustic Diffusers
(Published on 29. March 2026, 21:30 by ThePedallingPianist)
SUDOKU: Fill each cell with a digit from 1-9 such that digits do not repeat in a row, column or box.
REGION SUM LINE: The blue 'R' is split by a box border into two segments whose digits have the same sum.
PARITY LINE: Each pair of adjacent digits on the red 'A' must contain one odd and one even digit.
GERMAN WHISPER LINE: Each pair of adjacent digits on the green 'H' must have a difference of at least 5.
FIBREGLASS ACOUSTIC DIFFUSERS:
• A digit on a Fibreglass Acoustic Diffuser (upside-down mushroom) shows how many times that digit appears on Fibreglass Acoustic Diffusers;
• Fibreglass Acoustic Diffusers prevent echoes in adjacent cells, i.e. a Fibreglass Acoustic Diffuser and its up to four orthogonal neighbours contain different digits.
Solution code: Row 1 (top), left to right
Comments
on 4. April 2026, 15:56 by QuiltyAsCharged
Lovely puzzle! I had to count them all, now I know how many Fibreglass Acoustic Diffusers count themselves in Albert Hall
on 3. April 2026, 04:58 by Crusader175
Fun puzzle!
on 2. April 2026, 03:56 by Ratfinkz
I have very fond memories of watching my cousins sing in the Royal Albert hall as part of a choir competition. wonderful puzzle for a wonderful hall! Thank you
on 2. April 2026, 03:56 by Ratfinkz
I have very fond memories of watching my cousins sing in the Royal Albert hall as part of a choir competition. wonderful puzzle for a wonderful hall! Thank you
on 1. April 2026, 19:38 by LunchEntity
Rah rah! Very fun.
on 30. March 2026, 19:50 by blackjackfitz
Huzzah!
on 30. March 2026, 07:59 by wuc
Get stuck. Take a break. Reread the rules. Big aha. Great setting thx.
on 30. March 2026, 01:21 by Ragna
That was fun! Thank you. :-)
on 29. March 2026, 23:50 by Fool on Hill
That diffuser rule does more work than seems possible - excellent puzzle, and cool integration of the clue types.
