dOubLESHOW 13 Starts Soon! ✌️
The next round of dOubLESHOW is here!
Created by Alexei Oleshov, the contest features 11 puzzles, published as the daily puzzles on every even date from August 2 through August 22, 2026. As always, the puzzles continue the traditional dOubLESHOW theme centered around the number 2.
Before the contest begins, you can warm up with a special preliminary challenge: build the number 13 using the minimum possible number of 2s and arithmetic operations. 🤔
Good luck to everyone taking part, and happy solving! 🧩🎉
The puzzle below is a current daily puzzle. This puzzle is competitive - you have to register to solve it and participate in the daily competition. To register click Login link in the top right corner.
You can use the scores page to see the results of other competitors for this puzzle.
All the puzzles from the previous days are available at our archive page. Puzzles which are older than 5 days do not affect the score table and can be attempted without registration.
Author: O-le_o-le
Draw lines from the phone symbols to the black and white circles, so that each phone is connected to one black and one white circle, and each circle is used exactly once. The lines run horizontally and vertically, and each empty cell is used by exactly one line. If a circle contains a number, that number indicates how often the line from the respective phone symbol to this circle makes a turn. For empty circles the number of turns is unknown.
Grid control: To draw a line press the mouse button at a start cell and move mouse to another cell holding the button. More details about grid control are at the help page.