Brain Out Level 123

Overview

A duck stands beside a flask that holds only a shallow layer of water, with several loose stones lying on the ground nearby. The water level is too low for the duck to reach, and the scene also shows the sun and some clouds as possible distractions. The classic displacement idea from the crow and the pitcher applies here: adding stones raises the water inside the flask.
The flask sits between the duck and the loose stones, and the water inside it sits low enough that the duck's bill cannot reach from the side.

• Difficulty: Regular
• Estimated moves: 4

Step-by-Step Solution

1. Look at the flask and notice the water line sits well below the neck, so the duck cannot reach it from the side. Count the stones available on the ground.
2. Drag one stone at a time into the flask. Each stone sinks to the bottom and displaces water, pushing the visible level upward.
3. Continue dropping stones until the water rises high enough near the opening for the duck to reach.
4. Drag the duck over to the flask once the water level is high enough, and let it drink from the raised surface.
5. If the level still looks low after the first stones, add the remaining stones rather than moving the duck early; an early drag leaves the duck standing beside an unreachable flask.

Drag each stone into the opening one at a time, pausing between drops to watch the water line climb as the submerged stone displaces liquid. Do not overfill past the neck, but keep adding until the surface reaches a point the duck can drink from. Once the level is high enough, bring the duck over to the flask and let its bill reach the surface; the drinking action completes the level. If the duck splashes but does not drink, the water is still too low, so add another stone rather than repositioning the duck.

Strategy & Reasoning

The puzzle reuses the familiar displacement fable: solid objects take up space inside a container and force the liquid up. The stones are deliberately drawn beside the flask so their role is discoverable, while the sun and clouds are scenery that does not change the water level. The duck only becomes able to drink after the container itself has been filled to a reachable height. This is the classic pitcher-displacement riddle translated into a touch puzzle: solid stones take volume inside the flask and push the water upward. The sun and clouds are drawn to suggest weather changes, but in this frame the stones are the objects that actually move the liquid, which is why the displacement approach takes priority over a rain or cloud idea.

Tips & Common Mistakes

• Put the stones into the flask first; do not drag the duck toward the shallow water before the level rises.
• The clouds and sun are background decoration here, so covering the sun will not produce the water you need.
• Add stones one at a time and watch the water line, stopping once the surface reaches the duck's reach.