Twitter users were left frustrated after gardai posted two near identical images and asked the public to "spot the difference".
The pictures uploaded on top of each other include an aerial view of five garda vehicles, a horse box, a motorbike, cones, signs and dozens of more items used by the force.
They were all laid out as part of An Garda Siochana's Tetris Challenge.
The subtle differences make the seemingly easy task very frustrating.
Gardai posted the photos on Wednesday, and if you can't spot all eight changes, you'll have to wait until Thursday evening to find out.
A garda tweet said: "Leave your comments below and lets find the eagle eyed detectives among you.
"We’ll post the answers here at the same time tomorrow evening."
One social media user said: "Four out of eight. Found six in total. Then went mad."
A second added: "I only found two, but these are fun. Please post more," while a third said; "got four, up for work at 5am, let me know (laughing face emoji)."
Another frustrated user commented: "I’ve got seven of the eight... urgh."
