There are many logic games based on mathematical rules. One notable example is the Shingoki puzzle (also known as Semaphores).
In it you need to lay a conditional railway through circles with numbers - semaphores. In this case, you need to take into account not only the color of the circles, but also their numerical values.
The ability to quickly count and think abstractly directly affects the chances of winning. And, of course, they depend on the size of the playing field - the larger it is, the more difficult the puzzle!
Game history
The historical homeland of the game is the Land of the Rising Sun, where similar puzzles were produced in a wide variety in the 80s and 90s of the last century. Shingoki was not included in the golden classics of the genre and still remains a little-known game, although its rules are close to the popular Sudoku, Kakuro and Hitori.
In Sudoku the player is required to fill in empty cells with numbers, in Kakuro - black and white blocks, and in Hitori - cross out extra numbers. In Shingoki, all the necessary numbers are already indicated, and the player's task is to correctly use these numerical values by drawing lines between the circles.
Although this game is called Semaphores in most countries, its original Japanese name is 信号機 (Shingoki) which translates to "Traffic Light". There are actually not that many differences between these means of light signaling; they both fully correspond to the nature of the game, namely, laying conventional communication routes between key points (circles).
At first, the game may seem complicated, but it is enough to play a few games for it to open up to you in all its simplicity and genius. Try playing Shingoki once (for free and without registration), and you will never part with this game!
