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Dive 56 · Blue Edge

Whale shark below the surface

A spotted whale shark swimming below the surface with small yellow fish in front of it

Filling the tank…

In the frame

A whale shark covered in white spots and pale stripes swims just below the surface, with a group of small yellow-striped fish leading the way in front of its mouth. Sun rays slant down through turquoise water.

This dive cuts the picture into 48 pieces on a 8 × 6 grid: 24 border pieces and 24 inner pieces. The cut is fixed, so every player gets exactly the same pieces.

Dive plan

  1. Start with the easy part: the whale shark's spots and the yellow fish.
  2. Save for last: the turquoise water and the hazy sand below. About 66% of the frame has little detail, mostly in the bottom third, and those pieces look alike.
  3. Switch on Edges to keep only the 24 border pieces on the table, and build the frame first.
  4. Press Sort to tidy the loose pieces into rows around the board, border pieces nearest — handy once the frame is done.
  5. In the plain areas, match pieces by shape: on a 8 × 6 grid every inner piece has a tab or a blank on each of its four sides.
  6. Build the frame, then fill in from the strongest feature outwards.

Colours of the picture

Main colours, measured from the picture's pixels: teal (62%), turquoise (26%) and slate grey (12%).

  • teal62%
  • turquoise26%
  • slate grey12%

How deep it goes

Depth 3 of 5 — a steady dive.

Reef dives sit in the middle: enough pieces to need a plan, never so many that a phone screen feels crowded.