Replies

SamA November 1, 2019
Hello @chidera,She did not include every elimination in that initial diagram. She only diagrammed what was inferred from her first glance at the rules. You are correct that L cannot be 4th, or 3rd for that matter, but we can't see every possible elimination at first. Only after we understood that M must be 7th could we limit where L can go. She may have just forgotten to cross out L, or found that it wasn't necessary. Once we see that L must be 1st or 2nd, that is easier to express than writing "not L" under all remaining spaces.
chidera November 7, 2019
Understood makes perfect sense. Thanks for the explanation.