a rule I had issue with initially...

Comments

• kenglish55309 Free Trial Member

  May 2013 37 karma

  I think you have a typo 'if' should be 'is'. I think that it means exactly what you said. These types of rules make me pause for a bit too. I am hoping to reduce the pause by test day.
• J.Y. Ping Administrator Instructor

  May 2013 14220 karma

  That's a rule that comes up quite a bit in the games in the 50's and 60's prep tests. I don't want to give away which games in particular have them, but you'll encounter them when you go through those prep tests, which you should!
  
  Then, watch their video explanations here and you'll see how I deal with them. Sometimes, these rules allow you to spilt your master game board.
  
  Either W - S or S - T but not both. You've got a good intuition for it.
  
  Maybe it's W - S. When that's the case, we cannot have S - T, which means we have T - S. So together, we get W and T both before S.
  
  Or maybe it's S - T. When that's the case, we cannot have W - S, which mean we have S - W.
  So together, we get S before both W and T.
  
  So S cannot be in between W and T and must be either before both or after both.
  
  This lesson in bi-conditionals is useful for explaining the theory
  
  What do you make of this one?
  W is after S or T is after S but not both.
• 1 Like

  Robert McAdams Free Trial Member

  May 2013 29 karma

  No S-W^T
  No W^T - S
  W/T - S - T/W
  look good? Love your vids btw.
• J.Y. Ping Administrator Instructor

  May 2013 14220 karma

  Good job!