Normal Sudoku rules apply.
Region sum lines: Box borders divide blue lines into segments with the same sum.
Solution code: Row 1, left to right
on 15. July 2025, 12:27 by Djirt
Спасибо, прекрасная головоломка!
on 13. July 2025, 07:33 by skuntsel
That was an incredible puzzle! Very nice logics, with breakthrough equaling puzzle solving. Doubling down on Snookerfan’s finding about a very appealing step at the end when the puzzle crumbles (but no earlier, that’s the final step in a loooong deduction chain). As well, quite a rare treat, a colouring exercise. Thanks, Erin, it was a great puzzle indeed!
on 10. July 2025, 12:25 by Exigus
Lovely puzzle, thanks!
on 9. July 2025, 16:37 by Myfyr MJ
Nice puzzle. My first ever 4 star solve so maybe it’s been rated harder than it actually is?
on 9. July 2025, 11:07 by GoodMorningCallum
A superb puzzle, loved the way the lines interacted. Thank you!
on 8. July 2025, 16:32 by Snookerfan
Excellent, especially a certain step near the end! Thank you
on 7. July 2025, 17:58 by rameshsrivats
Brilliant puzzle
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