Subtract score for incorrect answers

[martinusnel]

Request for new feature: In the scoring configuration, add another section that you can define a penalty for wrong answers.

[paullj1]

That shouldn't be too hard. Rails migration to add a new field to each problem, then add the logic into the submissions controller.

[eljeffeg]

Yup, must have - need penalties. It would also be great to have it apply penalties after X tries, like the first attempt is free, but any further incorrect answers gains negative points.

[eljeffeg]

Also be nice to have a max penalty for each question, so as not to overly discourage working on a challenge. For example, a 5 point question might look like.
1st attempt: no penalty
2nd attempt: - 1 point
3rd attempt: - 1 point
4th attempt: -1 point
Additional attempts: no penalty

In this case, penalties would start at 2, be worth 1 point, and have a max penalty of 3 points.