Logic Games deductions

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Logic Games deductions

Postby paulshortys10 » Thu Oct 28, 2010 4:27 pm

I want to know what are the most common deductions made in the most common situations of Grouping/Linear. Can any of you contribute some or provide a link possibly? THanks

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Re: Logic Games deductions

Postby typ3 » Thu Oct 28, 2010 5:41 pm

If you have the right diagram on grouping games you won't need to make any inferences. This is the reason why I suggest using a different company that Powerscore, their grouping games diagram is mediocre.

For Linear games, there isn't one big common deduction.

If you're giving a rule that says two variables are separated by one space, two space, or go next to each other, you should expect that they will have a limited number of spots they can go into.
In some games this will lead you do diagram two or three different diagrams. Read the LGB on framing.

EDIT: Also, what type of linear are we talking?

Multi layer linear?
Pure sequencing / numbering linear?
Or a relative sequencing / ordering game?


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Re: Logic Games deductions

Postby cw2010 » Thu Oct 28, 2010 6:09 pm

Think About Spacing Between Variables (PT 53 Gm 3):
• When there is a gap formed between variables, consider how this gap might be used as a constraint to force other variables in/out of positions.
• Also, with advanced linear games (such as PT 53 Gm 3 #16,17), the positioning element might be dictated by one group, forcing the variable(s) into an untenable position or with specific requirements.
Think about the Underfunded Aspect + Defined # of Variables (2007 LSAT, Game 3)
• The underfunded aspect forces certain variables to repeat. Think about which variables CAN and CANNOT repeat, as well as the implications that a variable being repeated has.
• Some rules might force a variable to not be able to be repeated beyond a certain value, as it could force the total number to EXCEED the defined number allowed.
Think about rules that indicate a consecutive element restriction:
• These rules might force certain positions of a variable, be on the lookout for how the consecutive element can come into play to restrict positioning.
Think about Block Elements:
• Block elements can be very restrictive: 1) They might only be able to into certain positions in the original setup 2) Especially with questions that force a certain condition, their positioning could be severely limited.
Think about Overlapping Rules:
• In a linear game, if there is overlapping rules, such as rules that an element must be separated by a particular number of elements, this often leads to restrictions, particularly with block elements. (Ex. PT 59, S 1, G4)


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Re: Logic Games deductions

Postby cw2010 » Thu Oct 28, 2010 6:14 pm

The constraints dictate the deductions. However, at the core of any linear game is positioning combined with certain elements that can't go by each other. How these two interact, the rules that control them, differ depending on the game. Some things off the top of my head that play together:

*Blocks or "chunks"
*"Moving" positioning constraints..ie. G is at least 2 spaces ahead of R
*Fixed positioning constraints..ie G is 2 spaces ahead of R
*Flip positioning constraints...ie G and R are seperated by two spaces
*Flip positioning + moving positioning: ie G and R are seperated by at least two spaces

The list goes on and on. So the point is... just be clear that you have an exact idea of the constraints in the game.

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