Define invalid attempt

wca-guidelines.md

@@ -129,6 +129,8 @@ To be more informative, each Guideline is classified using one of the following
 - 9f2+) [ADDITION] For 3x3x3 Multi-Blind, the judge should record the number of puzzles solved, the number of puzzles attempted, and the final time. For example, if the competitor solves 3 cubes out of 5 attempted cubes in 40 minutes and 30 seconds, the judge should write down 3/5 40:30.
 - 9f4+) [CLARIFICATION] The result of an attempt should be a DNF if the competitor began the attempt by indicating that they are ready (see [Regulation A3b2](regulations:regulation:A3b2)) but the attempt was disqualified.
 - 9f5+) [CLARIFICATION] The result of an attempt is DNS if the competitor was eligible for the attempt and did not start it (see [Regulation A3b2](regulations:regulation:A3b2)). If the competitor did not qualify for an attempt (e.g. in a Cutoff Round), they have no result for the attempt.
+- 9l1+) [CLARIFICATION] A DNF Result is generally considered a valid result. Extra attempts must not be given for using a non-permitted puzzle that is only found after the round is complete (see [Regulation 3k2a](regulations:regulation:3k2a)).
+- 9l1++) [EXAMPLE] Examples of an invalid attempt: an attempt that was misscrambled, attempts where the results are no longer retrievable (e.g. a missing scorecard).
 - 9p2+) [CLARIFICATION] Result refers to the single or average that determines the ranking of the corresponding round.
 - 9q+) [RECOMMENDATION] Events and rounds should have at least 2 competitors.
 - 9t+) [EXPLANATION] Because of [9t1](regulations:regulation:9t1) and [9t2](regulations:regulation:9t2), rounds may look like they do not comply with [9p1](regulations:regulation:9p1), [9m1](regulations:regulation:9m1), [9m2](regulations:regulation:9m2) or [9m3](regulations:regulation:9m3). However, making changes to comply to these rules would affect innocent competitors, which is why the results must stay the same.

wca-regulations.md

@@ -272,6 +272,7 @@ Note: Because Article and Regulation numbers are not reassigned when Regulations
 - 9j) Each event must be held at most once per competition.
 - 9k) All competitors may participate in all events of a competition, except in cases specifically approved by the WCA Competition Announcement Team.
 - 9l) Each round must be completed before any following round of the same event can start. Exception: Extra attempts may be given at any point during a competition to replace an attempt that was initially invalid.
+    - 9l1) An attempt is considered invalid if an extra attempt is required to be granted.
 - 9m) Events must have at most four rounds.
     - 9m1) Rounds with 99 or fewer competitors must have at most two subsequent rounds.
     - 9m2) Rounds with 15 or fewer competitors must have at most one subsequent round.