Logic Masters Deutschland e.V.

Links: F-puzzles link
CTC link

Shikaku-Sudoku rules:

• - Classic sudoku rules apply.
• - The grid is entirely covered with non overlapping rectangles. Each rectangle contains exactly one circle, and the digit in the circle indicates the number of cells in the rectangle. n.b : digits can repeat within a rectangle if allowed by other rules, and a rectangle consisting of a single cell is valid.

example puzzle : Shikaku 101

Sorry for a long delay to post my first serious shikaku-sudoku, been quite busy for a couple weeks. I'll try to post the other one soon (it's my favourite, saving for last :P). Difficulty is hard to judge, somewhere between 3 and 5 stars being a relatively new variant, and I got varying echoes, so I post it as 4*.

You're also strongly encouraged to check Qodec's amazing puzzles with this ruleset :

• -Shikasudoku
• -Shikasudoku 2
• -Ship's Wheel

Hope this one will be entertaining and challenging :)