If you will have hard time solving it, turn on the conflict checker, should make it much easier :-)
I hope you will enjoy and I would be really grateful for all the comments and ratings.
Normal sudoku rules apply.
Diagonal: Digits along the marked diagonals must not repeat.
Antiknight: Identical digits cannot appear in cells a chess knight’s move apart.
Disjoint groups: Cells with the same position within the boxes must contain all the digits 1 to 9 (i.e., identical digits cannot appear within the same position in two different boxes, given digits help to understand this rule).
Kropki dots: Digits in cells joined by a black dot are in a 1:2 ratio (i.e., one digit will be double the other). Not all dots are given.
The Erica Series:
Episodes: 1, 2, 3, 4, 5, 6
If you liked this puzzle, I recommend trying out my other puzzles:
Symmetrical Fan
Night Club
Cops & Robbers
Broken Flashlight in the Dark
Blown Fuses in Electrical Installation
Important Hour on the Clock
Let Me Introduce Myself
Positive Symmetry <- Recommended for you!
Pretty Odd Shaded Area
It's What You Do in the Dark That Puts You in the Light
What Was the Sum Again?
(+5)-Yang
Solution code: Ninth (9th) row of the grid from left to right.
yesterday, 23:57 by VitP
disjoint groups is a variant that AUTOMATICALLY STARTS at level 2.
THIS one is considerably harder.
SK: Hi, I have posted it as 3*, but it is up to solvers to establish the difficulty level
on 10. November 2025, 22:27 by War
Cool puzzle!
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