Boomerang

Boomerang is an item, which can be used for faster solving of nonograms.

In-game description: Boomerang checks correctness. If there are no mistakes, the boomerang will return. Otherwise, it fixes 1 cell. There is a chance that the boomerang will fix more cells or will return if all mistakes have been fixed.
While solving a puzzle, open the "sack" in the game menu.

Function: Boomerang checks, if all cells are correctly filled (boxes or crosses). If everything is correct, the Boomerang will not be used (i.e. will return). There's a chance that it will fix one or more errors and a chance that it'll return after that.

Speculation: The Boomerang will fix more than 1 error and return, if you have solved a lot of the puzzle without any mistakes.

Boomerang
Boomerang in warehouse.
Mostly acquired by:	Solving nonograms.
Mostly used for:	Faster solving of nonograms.
Starting storage capacity	40
Warehouse/Pier/Guild supplies	+20
Athlete/Backpack	+12
Maximum storage capacity	304

Acquisitions

Boomerang can be acquired by:

• Solving nonograms.
  • The exact drop rate is unknown - although the bigger and more difficult the puzzle, the more you are likely to receive it and in greater amount.
• Crafting it in Workshop.
  • Items required: 1 x Wooden beam.
  • Items crafted: 1 x Boomerang.
    • Craftable at once: 20 x Boomerang.
  • Crafted in:
    • 6m (Mechanic lvl. 0).
      • 4m 48s with Dates, Olive oil or Honey.
    • 5m 24s (Mechanic lvl. 1).
      • 4m 12s with Dates, Olive oil or Honey.
    • 4m 48s (Mechanic lvl. 2).
      • 3m 36s with Dates, Olive oil or Honey.
    • 4m 12s (Mechanic lvl. 3).
      • 3m with Dates, Olive oil or Honey.
  • Unlocks at: Workshop lvl. 3.
• Completing ship expeditions.
  • Compensation reward: 0 or 1 x Boomerang (if all segments fail).
• Completing quests.
  • WANTED: 0 or 3 x Boomerang (random drop rate).
• Buying it in Shop.
  • 6 x Coin => 1 x Boomerang.
    • Shop lvl. 1: maximum 10 x Boomerang per cycle.
    • Shop lvl. 2: maximum 20 x Boomerang per cycle.
    • Shop lvl. 3: maximum 20 x Boomerang per cycle.
• Levelling.
  • Every 12th level, beginning at lvl. 7 (e.g. levels 7, 19, 31, etc.), you are rewarded with 5 x Boomerang.

Uses

Boomerang can be used for:

• Faster solving of nonograms.
  • Boomerang checks correctness. If there are no mistakes, the boomerang will return. Otherwise, it fixes 1 cell. There is a chance that the boomerang will fix more cells or will return if all mistakes have been fixed.
  • While solving a puzzle, open the "sack" in the game menu.

Boomerang can not be sold in Shop.
Boomerang can be thrown into the Cauldron.