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I have written quite a few sandwich sudoku puzzles. This one combines sandwich rules with Kropki Pairs.

Kropki Pairs Sandwich Sudoku

Each row column and 3x3 box must contain the digits 1-9.

Clues outside the grid indicate the sum of all the digits between the 1&9 in that row or column.

Where two cells are separated by a black dot, one cell contains a value that is double the other.

Where cells are separated by a white dot, the two values are consecutive.

Not all possible dots are given.

Use one of the following links to play online:

This puzzle is number [2770] in the CtC fan discord server puzzle archive. If you are a member of the CtC discord you can rate the puzzle here

Play some of my sudoku variant puzzles here. I have had a passing interest in sudoku and killer sudoku puzzles for some time. During the Coronavirus lockdown I discovered the Cracking The Cryptic YouTube channel. This opened up to me a whole new world of sudoku variant puzzle types that I had been completely unaware of.

Ambiguous Kropki Sudoku

This is a variation on kropki sudoku. Usually black and white dots are used to indicate cels that have a 2:1 ratio or a difference of 1. In this puzzle all the dots have been replaced with smiley faces, so you need to work out which are which.

Sandwich Sudoku

This is the fourth in a series of sandwich sudoku puzzles.

Arrow Sandwich Sudoku

This puzzle combines sandwich sudoku and arrow sudoku. I am quite pleased with the symmetrical arrangement and aesthetics of the clue placements and given digits. The broken arrow idea is quite fun too I think.