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01 September 2011 @ 11:54 pm
Friday Puzzle #117 - Only Five TomTom  
While this week's TomTom may look normal from the outside, there's something missing on the inside. Where you might expect to see six numbers, you will only need to fill in five, leaving one spot in each row and column blank. A blank cell will have no effect on the indicated operation and can be treated like the identity element (0 for addition, 1 for multiplication). The rules are otherwise unchanged.

Example (with 1-3):


Rules: Place a digit from 1 to 5 (or no digit at all) into each cell so that each digit appears exactly once in each row and column. The values in the upper-left of the bold cages indicate the value of an operation applied to all the digits entered into that cage. Numbers can repeat within a cage. Blank cells do not influence the values of the operations.
Ours BrunOurs Brun on September 2nd, 2011 08:19 am (UTC)
Not too hard but still a bit tough for such a small puzzle. This rule fits well with TomTom puzzles, and I guess it is possible to make something really tough with two or three Xs to place in each row/column - but it would probably become a pain to construct...
motrismotris on September 2nd, 2011 02:33 pm (UTC)
My original plan was to do something a bit more Dynasty Sudoku like and I think that is constructable, but getting the particular theme I used was a bit challenging here. 2 blanks in 9 digits is very much constructable (as is two blanks in a 9x9 sudoku) but more will be tough without putting in "no touching" rules or something else which I wanted to avoid.
(Anonymous) on September 6th, 2011 12:11 am (UTC)
I like this blog already, something reminds me of Radiohead here!