Developing logic games are not only recreationand entertainment. Puzzles are aimed at the development of logical thinking. There is a huge amount of developing desktop and computer games. Among the well-known and popular can be called the ageless puzzle called "Fifteen".
The history of the game
At first glance, a simple puzzle hasrich history, which dates back to the distant thousand eight hundred seventy fourth year. Its creator was the American Noah Palmer Chapman. Ordinary postmaster, who lived in a small town in New York, came up with a puzzle consisting of sixteen number-squares. All the squares were necessary to line up four in a row.
Moreover, the sum of the numbers in each of them shouldequal to thirty four. The son of the postmaster Frank Chapman perfected the game and changed its rules. The puzzle quickly became popular around the world, saving it to this day.
Rules of the game
An exciting and quite complex logical task will be interesting both for children and adults. "Fifteen" - a board game consisting of a square box filled with a set of chips.
Simple version of the puzzle
To acquire skills, let's start with the simplestoption. "Fifteen" 2x2 perfectly help to catch the essence of the game. This version provides a square box in which there are three chips with numbers from one to three. On the playing field they are placed in random order. They should be arranged in a row: 1, 2, 3. In order to solve the puzzle, you should not randomly move the chips. It is necessary to logically calculate how to assemble the "Fifteen".
The scheme of the playing field consists of four positions.Three of them are busy with chips. The fourth is empty, it is intended to move. At the end of the game, the top positions are occupied by the numbers 1 and 2. In the bottom row there is a triple. Start the game. For example, in our simple variant in the top row are three and one. And under the troika below is a two, to the right of which there is a reserve space for moving. Shift it to an empty space. The triple goes down to the vacant place. Then the unit moves to the left corner. Behind her deuce moves up.
As a result of simple actions, the puzzle is solved. A little complicate the task. In the 3x3 version, how to assemble "Fifteen?
Fifteen chips puzzle
After mastering the simple version of the game, you can decidemore challenging puzzle. The task is somewhat more complicated. Let's try to figure out how to assemble "Fifteen" 4x4. This classic version of the game has a box in which there are fifteen chips with numbers from one to fifteen. Also provides backup empty space to move them. The principle of solving the puzzle is the same as in the simple version. All numbers are arranged in random order. It is necessary to build them in ascending order of number.
Description of the game. The order of moving chips
Let's try to imagine how to collect "Fifteen". The logic puzzle circuit consists in the sequential movement of chips. Suppose that on the playing field the numbers are arranged in the following order:
- 1st line - 8, 15, 2, 11;
- 2nd line - 4, backup space, 10, 9;
- 3rd line - 12, 5, 1, 6;
- 4th line - 3, 14, 7, 13.
To begin with, in the upper part of the box we collect the first row of numbers from one to four. Build it easy. After several moves of the chips, the playing field looks like this:
- 1st line - 1, 2, 3, 11;
- 2nd line - 15, 10, backup space, 4;
- 3rd line - 5, 8, 6, 9;
- 4th line - 14, 12, 7, 13.
In order to set the four on the positionplace, move the ten and fifteen clockwise by one position. Then all the digits of the first row are counterclockwise. Move the unit down. And the remaining chips are shifted one position to the left. Now drop the chip at number eleven down. And we build the numbers of the first row in the correct sequence. In a similar way, we restore the second row.
To do this, all major movements occur in the third row. After restoring the correct sequence of the second row, the playing field will look as follows:
- 1st line - 1, 2, 3, 4;
- 2nd line - 5, 6, 7, 8;
- 3rd line - reserve cell, 14, 10, 11;
- 4th line - 12, 15, 13, 9.
Very little remains to complete the solution.puzzles. Getting to the placement of chips in the third row. To do this, first of all, move the initial numbers of the last two rows into place. Chips 9 and 13 are fixed and are no longer moved. This position has the following form:
- 1st line - 1, 2, 3, 4;
- 2nd line - 5, 6, 7, 8;
- 3rd line - 9, backup space, 15, 11;
- 4th line - 13, 14, 12, 10.
On the playing field there are six cells in whichplaced five chips. In order to restore the correct order of numbers, it is necessary that numbers 12 and 15 take their places. This can be achieved by several movements. After that, the right combination of numbers will be achieved.
After losing this logic, you getidea of how to collect "Fifteen". Game sequence instructions can be used for a wide variety of numeric combinations. The principle of placement and movement of numbers is preserved.
Analogs of digital "Fifteen"
Logic addictive game based onmoving the chips with numbers that line up in a certain sequence. Based on the principles of this game, no less entertaining puzzles are created, in which numbers are replaced by drawings. The picture is cut into separate fragments. The goal of this logical game is to assemble the original image into a single whole. Unlike digital Fifteen, it always has a solution.
