Case files · Variant sudoku
Solving mysteries, one grid at a time.
Hand-picked variant sudoku from the world's best setters, rated by how a human actually solves them.
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At Fives and Sixes
by FullDeck and Missing a Few Cards
Cages: Digits in cages cannot repeat and must sum to the value shown in the upper left corner of the cage.
Dots, Dots and More Dots
by FullDeck and Missing a Few Cards
Kropki pairs: Digits in cells separated by a black dot are in a 2:1 ratio. Digits in cells separated by a white dot are consecutive.
Cooking Cabbage
by FullDeck and Missing a Few Cards
Thermos: Digits on Thermos are strictly increasing from bulb (grey circle) to tip (along the grey line).
Ins and Outs of Arrows
by FullDeck and Missing a Few Cards
Arrows: Digits along an arrow must sum to the number indicated in the circle from which the arrow emerges.
Hello!
by FullDeck and Missing a Few Cards
Renban Line: Digits along a renban line must form a set of non-repeating consecutive digits in some order. XV: Digits in cells separated by an X sum to 10. Digits in cells separated by a V sum to 5.
Untitled puzzle
Digits in cages cannot repeat and must sum to the value shown in the upper left corner of the cage. Digits separated by a black dot are in a 2:1 ratio. Not all dots are necessarily given.
Fresh cases
New puzzles on the desk this week.
- CASE 001 Quad Wranglers by FullDeck and Missing a Few Cards Region Sum Lines: Box borders split blue lines into sections, and the digits on those… Indigestion Quadruple Region sum
- CASE 002 Safety Pins by FullDeck and Missing a Few Cards Modular lines: Any set of three adjacent digits along a modular line has three different… Mild Indigestion Killer Modular
- CASE 003 Equinox by FullDeck and Missing a Few Cards Diagonal: Digits along the marked diagonal cannot repeat. Strong Indigestion Diagonal Kropki
