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1234 Sudoku [WSC 2015]

Posted: Sun 17 Feb, 2019 12:37 pm
by Fred76
25 - 1234 sudoku.png
25 - 1234 sudoku.png (47.64 KiB) Viewed 3703 times
Source: 2015 WSC, Sofia

Potential issue: repeated digits. This question already raised from other threads, but here it is a bit more extended, with a digit repeated 4 times.

Re: 1234 Sudoku [WSC 2015]

Posted: Sun 17 Feb, 2019 8:51 pm
by detuned
A definite no for me - not only have you got the repeated numbers having to be placed, there is also something of a Heyawake or Hitori like constraint in terms of packing the 4's and 3's into fairly limited regions.