# \[Strategy Market\] G and C bases in GC pairs
**URL:** https://forum.eternagame.org/t/strategy-market-g-and-c-bases-in-gc-pairs/1396
**Category:** Strategy Market - Single State
**Created:** [August 13, 2012, 9:59pm UTC](https://forum.eternagame.org/t/strategy-market-g-and-c-bases-in-gc-pairs/1396 "2012-08-13T21:59:00Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Dr\_Drax](https://forum.eternagame.org/u/Dr_Drax)
#### Post date: [August 13, 2012, 9:59pm UTC](https://forum.eternagame.org/t/strategy-market-g-and-c-bases-in-gc-pairs/1396/1 "2012-08-13T21:59:00Z")
I’d like to submit a strategy:
Rank designs based on the percentage of G and C bases that are part of GC pairs as a fraction of total G and C pairs.
That is: score = (200 \* number of GC pairs) / (total G bases + total C bases)
So a design where all Gs and Cs are part of GC pairs would score 100, and a design where all Gs and Cs were either unpaired or part of GU pairs would score 0.
If possible, I’d like to exclude from the calculation G and C bases that are locked, such as in aptamer rings that are fixed for a given lab.
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### Author:  [@jandersonlee](https://forum.eternagame.org/u/jandersonlee)
#### Post date: [August 14, 2012, 9:19pm UTC](https://forum.eternagame.org/t/strategy-market-g-and-c-bases-in-gc-pairs/1396/2 "2012-08-14T21:19:00Z")
Slight nit: what if there are no Gs or Cs? Divide by zero error, but should probably score as 0 (cub scout design).
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### Author:  [@Dr\_Drax](https://forum.eternagame.org/u/Dr_Drax)
#### Post date: [August 14, 2012, 10:29pm UTC](https://forum.eternagame.org/t/strategy-market-g-and-c-bases-in-gc-pairs/1396/3 "2012-08-14T22:29:00Z")
You’re right - that is a possibility. Since cub scout designs are known to do badly in synthesis, I agree with your suggestion that such designs should score 0 rather than crash the scoring algorithm.
I would hope all of the strategy market algorithms are implemented with exception handling, but I don’t know if that’s actually the case. Thanks for pointing out my oversight.