[Retros] Retro Section in Mat Plus
ralphmerridew at gmail.com
Mon Sep 10 10:26:12 EDT 2007
Is there a summary of their exact notation anywhere? (I assume that S
refers to the knight, but I have no idea what the "not-equal 2 star
check check" or "not-equal 2 check dot dot dot" means.) I looked
through #26, but didn't notice any retros.
More information about the Retros