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Tiling Trial II (Posted on 2014-08-06) Difficulty: 3 of 5
A 20x21 rectangular floor needs to be tiled using square tiles that are uncuttable, non-overlapping and having integer sides.

What is the smallest total number of tiles to make this possible?

No Solution Yet Submitted by K Sengupta    
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re: Possible spoiler | Comment 3 of 4 |
(In reply to Possible spoiler by Harry)

Harry's solution joins 6x21 and 14x21 rectangles, each tiled with squares.


Here's a nice display:  http://int-e.eu/~bf3/squares/view.html#21,20

  Posted by xdog on 2014-08-07 10:26:58
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