Saturday, 13 April 2013

Daily League Sudoku #12: Frameless Sudoku

This week again one of my own ideas for the Daily League. I have posted a few of these already on my blog. I came up with this type as a response to the repetetiveness of Frame Sudokus. I always enjoyed solving Frame Sudokus, but after a while they get a bit the same. This rule set adds to the diversity of the solve as you now have more ways of creating openings and keeping the solving path narrower.
This puzzle is easier than the other Frameless Sudokus I have made, to make it more suitable for speedsolving. The path is solving path is still narrow, but you get a few easy digits to start off with. I think the equal sums on the left and right side are a nice touch. I was planning on making two sequences at the top and bottom too. Except the 16 and 18 clues wouldn't work in order with the other clues, but did work switched. So I figured that would be good enough. This puzzle can also be used as practise for the upcoming Serbian Round of the WPF Sudoku Gran Prix held from April 20th-April22nd, which features a Frameless Sudoku.

Recap of the last week:
Sunday: Prime Number Sudoku by Seungjae Kwak
Monday: Untouch diagonal Sudoku by Fred Stalder
Tuesday: XV Sudoku by Prasanna Seshadri
Wednesday: Sudokurve by Bastien Vial-Jaime
Thursday: Non-Consecutive Sudoku by Rishi Puri
Friday: Classic Sudoku by Tom Collyer

Daily League PDF:
Week 12

Rules for Sudoku

The numbers on the outside indicate the sum of the first digits encountered in that row or column from that side. The amount of digits can differ from sum to sum and can be only one digit.


  1. It's a nice puzzle. I like how the top clues work as well as the left/right sets. Too bad 16/18 didn't quite work out for the theme.

  2. As I was solving I got to the bottom-left corner and saw how 18 wouldn't work on the left, but 16 would, it was like watching you create the puzzle!

    1. Thanks, good to know people also read my comments.