As promised, I just posted a puzzle with the rating that is currently in the lead in our poll. And that, apparently, is INSANE. This puzzle requires all Killer techniques + it requires some advanced classic Sudoku techniques (match subsets etc). It does not require trial and error! I hope someone will solve it without the aid of a computer. To be honest, I don’t plan to post many puzzles with this difficulty – it’s dangerous for your mental health!
I am surprised that according to the comments, people thought that yesterday’s puzzle wasn’t easy – all it requires for solving are innies/outies and nothing else. Although, if you haven’t practiced your outies you might find it more difficult. For instance, look at the first two rows. The sum of all cells in them must be 90. But the cage that belongs to nonet number 1 and is marked with 8 contains an outie for the first two rows! So you add up all the cages from the first two rows, find that their sum is 96 and therefore find that R3C3 must be 96-90 = 6.
There are 8 (but they solve 10 cells) innies/outies in yesterday’s puzzle altogether. If you don’t find all of them – you can’t solve the puzzle.
I also posted a 4×4 Classic Sudoku for the weekend. Don’t forget about tomorrow’s Saturday extra special – Samurai X – the only place on earth you can find them!
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