Begin with the stated total
Spot 6 Differences describes two nearly identical pictures and asks for six differences. Keep that total distinct from the number of suspicious details you have noticed. A possible discrepancy is a candidate until the game's own interaction recognizes it. This distinction matters late in a search, when remembering several promising areas can create the impression that the puzzle is complete even though fewer findings have actually been accepted.
Let feedback determine the count
Learn how the interface reports a successful selection before keeping a mental tally. If it displays accepted or remaining finds, compare that information with your own count. The source does not document a particular marker, counter, or sound, so none can be assumed. A repeated selection in one area should not be counted as another find unless the actual game treats it as a separate confirmed difference.
Audit the gap before searching again
When your tally and the displayed state disagree, identify the finding whose acceptance is uncertain. Rechecking that specific event can be more useful than restarting the entire search immediately. Mouse and touch are listed, without an exact selection gesture. The incomplete description supplies no mistake penalty or hint rule. A useful goal is six clearly accepted findings, keeping the game's completion feedback separate from confidence in an unconfirmed observation.