Tag Archives: gattai

Killer Sudoko puzzles are back. Samurai Sudoku will be back tomorrow.

As you have already noticed, the daily killer sudoku puzzles are back. The sudoko variants too. Samuri Sudoku and Diagonal Samurai Sudoko (overlapping Gattai-5 puzzles) are also back and will be updated tomorrow as per schedule. The missing Samurai X will be sent via newsletter. Some of you have already received it. In case you […]

Posted in Killer Sudoku, Newsletters, Samurai sudoku | Also tagged , , , , , , , | 2 Responses

Killer Samurai Sudoku, 100 puzzles, volume 4

I already hinted that this one was coming… Two years after the previous volume, I am ready to present you the forth volume of Killer Su doku puzzles in Gattai-5 format, the book that contains the most difficult variations of Sudoku puzzles. Killer Samurai Sudoku, volume 4, 100 puzzles As you can see from the […]

Posted in Jigsaw Sudoku, Killer Sudoku, Puzzle books, Samurai sudoku | Also tagged , , , , , , , , , , , , , , , , , , | 1 Response

Overlapping CalcuDoku (Square Wisdom, MathDoku) puzzle

It’s been quite a while since I last posted a CalcuDoku puzzle. I’m going to fix that now and to make it up to you, it will be a somewhat special variant of Square Wisdom puzzles. It’s an overlapping, 2 in 1 (Gattai-2), CalcuDoku puzzle, which is essentially in a TwoDoku layout. Remember the rules: […]

Posted in Free sample puzzles, Killer Sudoku, Puzzle variants | Also tagged , , , , , , , , , , | 2 Responses

Jigsaw Sudoku in Flower Sudoku format (5 in 1 Gattai-5)

This should be a tough one – perhaps too tough? It’s only rated “BRAIN”, but the layout makes it quite difficult, I think. 5 overlapping Jigsaw Sudoku puzzles put together in the Flower Sudoku (Gattai-5) layout, which is similar to Samurai Sudoku but not exactly the same. Make sure to use the “Twin Nonets” solving […]

Posted in Free sample puzzles, Jigsaw Sudoku, Samurai sudoku | Also tagged , , , , , , , , | 8 Responses

Killer Sudoku with all operators in TwoDoku format

I don’t think I’ve ever posted a puzzle like this one. Yes it is essentially a Killer puzzle. Yes, it’s also an overlapping sudoku puzzle, Gattai-2 (TwoDoku). But it also has some similarity with Calcudoku puzzles, because you must use all four operators (+, -, *, /). Killer TwoDoku with all ops for Tuesday, February […]

Posted in Free sample puzzles, Killer Sudoku, Puzzle variants | Also tagged , , , , , , | 2 Responses

Butterfly Killer Sudoku

It’s been a while since I last posted a Killer Sudoku variation. As far as I can remember, you folks liked the Butterfly layout of the puzzles, so here is an overlapping, 4-in-1 (Gattai-4), Killer Butterfly Sudoku puzzles. You can also find these puzzles in my Killer Sudoku Compendium book. Killer Butterfly Sudoku for Friday, […]

Posted in Free sample puzzles, Killer Sudoku | Also tagged , , , , , , | 1 Response

Weekend Special – CalcuDoku Samurai (Gattai-5) puzzle

This is my largest CalcuDoku puzzle so far. Previously I published a CalcuDoku Samurai 7×7, but this time the puzzle is even larger: 8×8 CalcuDoku Samurai for Saturday, February 28, 2009. CalcuDoku for Saturday, Feb 28, 2009Difficulty: IQClick on the puzzle thumbnail to access the puzzle. Tweet The Reduced Operators version of CalcuDoku is here. […]

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Posted in CalcuDoku, Free sample puzzles, Samurai sudoku | Also tagged , , , , , , , | 3 Responses
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