> Step 1. I put a <purple circle>, <blue circle>, or <red circle> color dot on each region, but hide it under a post-it
> Step 2. You click any two bordering regions, and I pull off their post-its
> Step 3. You check that the revealed colors are different
I would add explicitly in step 1 that you tell me what 3 colors you used, and in step 3 that I check that the revealed colors are different from each other and are both from that set of 3. Similar in the explanation of why this should convince me.
> Step 2. You click any two bordering regions, and I pull off their post-its
> Step 3. You check that the revealed colors are different
I would add explicitly in step 1 that you tell me what 3 colors you used, and in step 3 that I check that the revealed colors are different from each other and are both from that set of 3. Similar in the explanation of why this should convince me.