ronk wrote:champagne, as you know, a Sudoku Explainer rating (ER) has become a generally accepted rating for comparing puzzles. Most of the puzzles in the above list, your list, were apparently supplied to you by coloin ... by some means other than public posts AFAIK.
Do you have the ERs for those? If not, I'll calculate the second half if you do the first half.
Hi ronk,
In that field of hardest puzzles, I have two problems with Sudoku explainer.
1)
Each rating takes between one and four hours (slighltly more if I am right for the last one, compared to about 10 seconds with my solver to have a feeling of the difficulty,2)
The ratinr given by Sudoku Explainer does not help at all to find a logic path.
Other providers of hardest puzzles are using other ratings (Q2 GSF for example) likely to avoid that difficulty.
More or less half of the list is made of puzzles not provided by coloin thru a private link. The SE rating should already exist but I don't no where.
Another problem is that that lot is a small part of a huge data base that I hope to grow within next months. I can not afford to rate the full data base and the next hardest to come.
Regarding that list, May be you can find what has already been done and I'll rate puzzles i got thru private link.
give me one or two days and it will be there
champagne
PS as thes puzzles are not in the list of hardest if you don't use SK loop EXOCET ..., the ratings should not be that high