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No way to win (Posted on 2014-04-17) Difficulty: 4 of 5
My alphametic
NOWAY*TOWIN=<PRODUCT>
exists in two versions (both with a unique solution):

a. Both words for a "PRODUCT" contain the letter D, one in the begining, the other at the word's end.
b. One has 9 letters the other 10, not all of them distinct.

You are requested to find both products.

No Solution Yet Submitted by Ady TZIDON    
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re(2): computer solution for one of the two - att Charlie Comment 4 of 4 |
(In reply to re: computer solution for one of the two - att Charlie by Ady TZIDON)

about 5 hours to get to the second solution; about 6 hours for the full run to complete, assuring no third solution exists.

Used QB64 on a Dell Inspiron 537 with Intel Dual Core at 2.70 GHz, 1.59 GHz running Windows XP.

I had been using my newer computer, which had been going almost twice as fast, but was having a devil of a time trying to debug it after finding no solutions. I brought the program back to the old computer to debug under QB 4.5 (a DOS system that runs under XP). When I felt confident it was working, I set QB64 on the problem again to speed up the process, but on the same XP machine.

It would have run almost twice as fast if I had used QB64 on the newer Dell Inspiron 3847: 3.40 GHz Intel Core i3-4130 running Windows 7.

I really wish Microsoft hadn't left out 16-bit compatibility in its operating systems newer than XP.


  Posted by Charlie on 2014-04-19 09:27:41
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