Perplexible

Here’s a new Sudoku for the year 2020.  Instead of filling in cells with the numbers 1 through 9, we use the characters in “HAPPY2020”.  This means we have repeated P’s, 2’s and 0’s.  Inside each cage, arrows point from larger numbers to smaller ones and from letters later in the alphabet to earlier ones.  Arrows are placed whenever possible, so lack of an arrow between cells in the same cage also reveals important information.  For a demonstration on a single cage we have the following.

 

The main color chosen is the Pantone 2020 color of the year, with the 2019 color for the arrows.  You can find a slightly more challenging puzzle with the same rule set here at Quadrata.

Posted in Sudoku by David Nacin, 01/19/20 1:02 PM
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