Normal sudoku rules apply.
Skyscrapers: Clues outside of the grid indicate how many digits are larger than all other digits that come before them, reading from the direction of the clue.
Zippers: On a purple line, pairs of digits equidistant from the center sum to the central digit of their line.
The grey lines are palindromes in which digits read the same forwards and backwards.
Digits in circles must be the exact and only digits assigned to its surrounding cells.
Solution code: Enter Column 1
on 31. July 2025, 16:08 by JVA
Way too unapproachable for 1*
on 30. July 2025, 03:30 by VitP
grey & purple lines are virtually indistinguishable. perhaps increase colour saturation on purple
on 29. July 2025, 19:08 by wuc
A rather approachable but very fun 2*. Thx for sharing.
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