The Hardest Version Of TETRIS (Phistomefel)

*** TODAY'S PUZZLE ***
Phistomefel is setting sudokus again and Simon tackles his newest puzzle: Stostone Cold, a crazy variation of Tetris! What can we say except this is everything we've come to love from one of THE most brilliant minds. Oh yeah, it's not absolutely straightforward to solve... we should probably add that.

Play the puzzle at the link below:
https://sudokupad.app/a21fmb469t

Rules:
Fill the cells with the digits 1 to 8 such that each digit appears exactly once in every row, column and region. A region is a collection of eight orthogonally connected cells. Determining the shape of the regions is part of the puzzle. Each region has exactly one clue which is a small number in the upper left corner of some cell in that region (not necessarily the top left cell). Shade some cells such that: a) no orthogonally neighboring cells are shaded across a region boundary; b) all shaded cells within a region are orthogonally connected; an c) the digits in all shaded cells within a region sum to the region's clue. If all of the shaded groups were to fall straight down without changing shape, they must completely fill the bottom half of the grid.

*** NEW SUDOKU HUNT ON PATREON ***
We're delighted to share with you a brand new sudoku hunt themed around snake egg puzzles by Glum Hippo. If you've never tried snake egg logic puzzles before, prepare for serious fun - these sudokus are outstanding! Finish by May 20 to enter the competition!

Other treats on Patreon include:

- the Sumgeons & Diagrams sudoku by sunnyjum;
- Simon's latest forays into the world of Islands Of Insight;
- Mark's video looking at the new OneUp puzzle from Rodolfo Kurchan;
- his solve of Region Geometry by Emre Kolotoğlu (3hr 36min long...!);
- and Mark's latest solve of The Times Club Monthly cryptic crossword

https://www.patreon.com/crackingthecryptic

*** GET OUR FOG KICKSTARTER DELUXE & OUR BOOKS ***
Check out this link for the kickstarter books and Fog Novella we've created ..