Post
by Want_My_Life_Back » Mon Sep 12, 2011 10:17 pm
At least for the game in question, I believe the key is good diagramming and linking rules together to make useful deductions. Because of the second rule we know that the fourth train is always either Y or W. This combined with the other rules; (Rule #3) W>S>Y; (Rule #4) R>T/V and (Rule #5) T and V can't be adjacent, lets us come to the conclusion that when Y is fourth R,W,S have to fill slots 1,2,3 and T,Q,V and to follow Y with Q always being sixth because of rule #5.
When W is the fourth train, S,Y and either T or V must follow, and R,Q and either T or V must precede. Even though Q is a random variable it must arrive either 1st, 2nd or 3rd because otherwise T and V would be forced next to each other.
Question 14 gives us the scenario of W>R, which forces us into the first situation I gave of Y arriving fourth because if W were fourth it would force five variables into three slots. With this new information we can now work out that W has to be 1st because W now arrives before both R and S. So the only moving variables are now R/S and T/V because we previously worked out that Q is always 6th when Y is 4th. This gives us four possible outcomes when we combine the following: R>S or S>R & T>V or V>T.
The key is really taking the extra time initially to make those key deductions. Rarely are rules isolated from other rules, and by always trying to link rules together we will often create further qualifications that are not explicitly stated in the rules.
Hope this helps, and a raw score of 92 comes out to 174 on the June '01.