Logic Masters Deutschland e.V.

Standard sudoku rules applies. Fill the grid with numbers from 1 to 9 so each digit occurs exactly once in every row, column and 3x3 box.

Four digits surrounded the circle increase or decrease clockwise.The number in the circle show the biggest and smallest number around the circle.

All possible circle are given. In other words, places without a circle don't have the 4 clockwise increasing or decreasing digits.

f puzzle link

This puzzle is made by Old Miles from China in 2017.Yes, here we go again. And yes, it's not getting harder. In case somebody might ask, I will give a total valuation in the type series end. This series actually push us to think how much further we can exploit a rule. And that will be a topic of another puzzle.