Daily league update :
On Saturday, Bram posted a No 10 Sudoku. Kwaka came up with an innovative variant called Mickey Mouse on Sunday. Fred posted a tricky Extra Regions Sudoku yesterday, and here is my contribution below. Oh and the combined Week 2 PDF has been released, and is publicly available here, with the usual target solve times for different levels of solvers.
Coming to the blog post now, I have had Sudokucup 9 hanging over my head through the weekend, and so the reason for the delay in posting. I thought I’d make it up by posting 2 puzzles again. My week 3 of the Daily League went really well and I’m leading that week for now, although its still open for solving and adding your time on the spreadsheet that can be found on our facebook group. The lead up being so good, I was hoping for a good showing in Sudokucup 9, and thankfully I had that, even if I did keep putting it off for not being in the best of health. I finished at 8th place.
The Regional Yajilin is a reject from one of the many other sets I’m working on. It might be tricky if you’re not familiar with looping techniques but should go along fine otherwise. The Antidiagonal Sums Sudoku isn’t too tricky.
For 280 : Follow Regional Yajilin rules. Some loop segments are given.
For 281 : Follow regular Sudoku rules. Additionally, each of the main diagonals must contain exactly 3 distinct digits. One digit is the sum of the other two.