Tag Archives: Double Sudoku

Double Harakiri Sudoku X

More unique Sudoku puzzles that you’ve never seen before – for die hard fans of big Sudoku puzzles, here is another one – Double Sudoku Harakiri X! There are 13 classic sub-puzzles, which of course don’t have their own (unique) solutions but all together constitute a puzzle with a single solution. This time, however, you […]
Samarai Sudoku book

Posted in Free sample puzzles, Samurai sudoku, Sudoku Variants | Also tagged , , , , | 4 Responses

Twin Nonets

Lets formalize the technique that can be used when solving overlapping puzzles, which I have been referring to as “the new solving technique” and that I now call Twin Nonets. Basically, this technique is a sub-technique (or if you like – a consequence) of the naked/hidden triplets technique that you are all probably aware of. […]
Posted in Solving tips | Also tagged , , , , , , , , | 12 Responses
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