In the frame
Two orange anemonefish with white bands nestle in a large anemone whose tentacles fill the right half of the frame. Above the brown coral boulders on the left, small blue fish swim in sunlit water.
This dive turns the picture into a 4 × 4 slide puzzle: 15 tiles and one empty space. The shuffle is fixed, so everyone starts from the same board, and it is always solvable.
Dive plan
- Start with the easy part: the two orange fish and their white stripes.
- Save for last: the sunlit blue water. About 21% of the frame has little detail, mostly in the top third, and those pieces look alike.
- Finish the top row first, then the left column; the puzzle shrinks to a smaller board each time.
- Switch on the numbers if two tiles look alike — they show where each tile belongs.
- The picture is busy enough that neighbouring tiles can usually be told apart without numbers.
- For the last two rows, work column by column, two tiles at a time.
Colours of the picture
Main colours, measured from the picture's pixels: olive (24%), charcoal (20%), sky blue (19%) and kelp green (17%).
- olive24%
- charcoal20%
- sky blue19%
- kelp green17%
- brown12%
- teal8%
How deep it goes
Depth 3 of 5 — a steady dive.
Wall dives drop off into bigger boards, where the plain parts of a picture start to slow you down.