steven wrote:Having 81 numbers and 81 letters on the same board might make it difficult to overview.
I suspect the situation is something like this:
To a person with normal color vision it is challenging but not overwhelming to have colors
in addition to the numbers, whereas the additional letters would be overwhelming.
To a person with color confusion it is challenging but not overwhelming to have letters
in addition to the numbers, whereas the additional colors would be overwhelming.
As suggested in other postings on this forum
, it's possible that color-confused people develop compensating skills in "shape discrimination". I wonder if there's published research on this. (?)