witzar

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About witzar

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  1. LCD Watch

  2. LCD Watch

  3. Well done, gavinksong.
  4. Diameters

  5. This puzzle is inspired by posted by bonanova. Again we work on a hexagonal tiling of a plane, and the question is about possibility of covering some shape with triminoes. Trimino is a "triangle" formed by three unit hexagons sharing common vertex. The shape to cover is defined as follows: Let's pick a unit hexagon and call it H1. Now we recursively define Hn+1 as a sum of Hn and all unit hexagons adjacent to Hn. So basically Hn is a "hexagon" with side of length n (unit hexagons). Let Dn be Hn with one unit hexagon at it's center removed. So, can you cover D2015 with triminoes?