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At Fault Coverage (Posted on 2007-03-22) Difficulty: 3 of 5
Show that a 6x6 square tiled with dominoes will always have at least one fault line.

See The Solution Submitted by Brian Smith    
Rating: 2.0000 (1 votes)

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re: brute force | Comment 2 of 9 |
(In reply to brute force by Charlie)

actually only 390 of the 3364 ways of arranging the dominoes made it through the limit on comment size, not 1/4 of them all. But it's still the case that ll 3364 had fault lines.
  Posted by Charlie on 2007-03-22 22:07:09

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