sudoku

by sashimi

These images are nominally A4-size @ 300dpi - you might need an image viewer such as Irfanview to print them, although any DTP package should be able to handle them okay.

To solve the 'mild' puzzles, which have extra clues to encourage beginners, you only need to spot "hidden singles". The 'medium' puzzles are harder, requiring knowledge of "naked/hidden subsets". While the 'wasabi' puzzles require "forcing chains", without (in theory) having to resort to trial-and-error.

Incidentally, Wikipedia describes sashimi as "a Japanese delicacy primarily consisting of very fresh raw seafoods", and says of wasabi that "fortunately for those who mistakenly consume too much of this condiment, the burning sensations it can induce are short-lived compared to the effects of chili peppers".

Editors: please play these in sequence at A4 resolution. Solutions optional. The current set of puzzles is also available in zip format (2.32MB).

Please observe the licensing terms.