Tangram is a Chinese puzzle game that is more than two centuries old. The square is cut into seven parts: two large triangles, a medium one, two small ones, a square and a parallelogram. Silhouettes are made of them: birds, animals, people, houses, abstract figures.
There are 120 silhouettes in the game, divided into four sets of increasing difficulty — from splayed shapes with obvious protrusions to dense spots where only the outline serves as a clue. Each silhouette is machine-tested: it is assembled from exactly seven parts, without cracks and overlays.
The parts stick to each other at the corners, so it's convenient to fold with both your finger and mouse. The shape you started saves itself: you can close the tab in the middle and come back later from any device. There is a figure of the day and a counter for consecutive days.
The game is free, registration is not required.
Choose a set and a silhouette. There are seven parts at the bottom: Drag them onto the dark spot of the silhouette with your finger or mouse. Next to someone else's corner, a part sticks by itself.
Double-tapping on a part turns it 45 degrees, and the "Turn" button does the same. The "Reflect" button only works with a parallelogram: the reflection does not change anything for the other six parts, and some of the silhouettes do not assemble without it. The Reset button brings all the parts back down.
On the computer: R rotates the selected part, F reflects.
When the silhouette is completely closed, the figure is counted. A hint puts one piece in place, but removes the stars: three stars are given for a piece assembled without hints. The next set opens when sixty percent of the stars are scored in the current one.