ibauk
commented
2 years ago I can't prove it but this looks like a case of fat finger syndrome. If the scorecard is interactively recalculated, the extra 'question' bonus is not taken into account. If multiple cards were subjected to the same keystroke buffer that might account for the strange results.
IT22 was being scored perfectly well using a single laptop until around 1600 when a second laptop was being used to post some manual claims.
Some event occurred which resulted in several (all?) entrants suddenly reporting lower scores.
Examination disclosed that bonuses in the range 01..09 were, not always, omitted from scorecards and that question extra points had been removed.
Testing all works ok. Forensics not available. Code walkthrough discloses no 'iffy' UPDATE statements.