Weekend Special: Butterfly Samurai
Killer Sudoku with diagonal cages!
This puzzle consists of 20 (twenty) 9×9 Sudoku sub
puzzles. There are 5 groups of 4 puzzles. Each group of 4 is arranged Butterflystyle, and those 5 groups are arranged Samuraistyle.
Please make sure you understand how the puzzles are arranged before attempting to solve the puzzle.
Also, be careful when solving this one – with diagonally adjacent cells it’s sometimes easy to miscount the number of cells in a cage and if you do that, you get the cagesum combinations completely wrong!
Butterfly Killer Samurai Sudoku – Sunday, March 11, 2007 – Difficulty: HARD
(click to download or rightclick to save the image!)
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Killer Samurai Sudoku books  
To see the solution to this puzzle click here
Enjoy!
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6 Comments
I just have to say that I’m really enjoying solving this puzzle. I’m about 1/2 way through now after 2 days! Keep up the great work, I like the variations.
I am struggling with this. My main problem is on the 12 line down. I make the numbers in the 13th, 14th and 15th cell from the left to be 1,2,and 3 (no particular order) but that would make the numbers in 22nd, 23rd and 24th cells from the left 1,2,and 3 (again in no particular order) but the total is at least 10. Where have I gone wrong?
Many thanks
PAul
Its because the puzzle doesn’t follow the conventional rules. There are two one on the long line. No wonder I couldn’t do it.
I’m 2/5 of the way done… this is awesome!!, there is a slight problem with E2, E3, G2, G3 of the center puzzle… you can rearrange the 1/4 so that there is more than one correct answer… however i solved this problem by making an “imaginary” sudoku grid using one existing grid and two emptys and assuming that the numbers should follow normal sudoku rules within the imaginary grid… i get the “correct” answer in the answer puzzle when i do this. Is this how it is supposed to be figured out? or is there an error in the puzzle? thanks!
Tim, I don’t quite understand what you are saying. There are no imaginary grids. There are 5 groups with 4 subpuzzles in each one of them. The whole puzzle has one solution, while each of the 20 subpuzzles could have multiple solutions when solved separately from the rest.
It is best to post your question in the forum: http://www.djape.net/sudoku/forum
Good luck! ðŸ™‚
Djape
Nevermind, I see what I did wrong… Awesome puzzle by the way!