Spot the Differences
Find the differences between the two pictures.
(Example (one of the images are mirrored) from PGP IB)
- One of the pictures may be rotated, mirrored, etc.
History of the puzzle
Unidentified. The words "spot the difference" being used as a name for a puzzle type can be seen in a magazine from 1969 (Advertisers Weekly: Organ of British Advertising, Volume 240), according to Google Books.
The first puzzle from the first round of the first WPC (WPC 1992) was a Spot the Difference puzzle. It asked which of the images were the correct mirrored image of the sample.
Appearances in the past WPCs
- WPC 2017/Round 17 by Amit Sowani