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    Thema: Spectradoku — a new Sudoku variant with two orthogonal layers (digit + color)
Beitrag: RE: Spectradoku — a new Sudoku variant with two or...

Realshaggy schrieb: (02.07.2026, 14:11) -- Last time I tried, I didn't have much problems remembering the digits from 1 to 9. -- Ha, fair point — remembering 1–9 was never the hard part. Sorry if t...
Todd Rätseldiskussionen 4 651 07.08.2026, 09:23
  Brick Thema: Tile Sudoku — Sudoku you assemble from tiles
Beitrag: Tile Sudoku — Sudoku you assemble from tiles

Hello, I'm Todd — the same solo developer who posted about Spectradoku here recently. I've been working on another free browser puzzle, Tile Sudoku, and I'd love to share it with you. https://tiles...
Todd Rätseldiskussionen 0 63 07.08.2026, 09:14
    Thema: Spectradoku — a new Sudoku variant with two orthogonal layers (digit + color)
Beitrag: RE: Spectradoku — a new Sudoku variant with two or...

Realshaggy schrieb: (02.07.2026, 13:22) -- Just a little puzzle from 17 years ago. https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=000012 -- Thanks for the heads-up! You're right —...
Todd Rätseldiskussionen 4 651 02.07.2026, 13:33
    Thema: Spectradoku — a new Sudoku variant with two orthogonal layers (digit + color)
Beitrag: Spectradoku — a new Sudoku variant with two orthog...

Hello, I'm the solo developer behind Spectradoku, a free browser-based Sudoku variant I've been building over the past months.  I'd love to share it with you and hear what you think.  ── What it i...
Todd Rätseldiskussionen 4 651 01.07.2026, 00:47