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by II2II 1250 days ago
> not everyone knows chess notation by heart.

I am going to agree, and hopefully clarify the point with a slightly different example. While I know how the notation works, I cannot figure out where a particular square is at a glance. This meant a lot of time squinting at the tiny, low contrast labels at the edges of the board. It made the problem a lot harder to solve since my concentration was constantly being disrupted by figuring out where the next destination is, rather than focusing upon the pattern of the knight's moves.