1. Basic rules
A classic 15 puzzle uses tiles with 15 numbers written on each and one empty slot. Tiles can be moved either vertically or horizontally if they stand next to empty space.
The goal of the game is to rearrange numbers on field into order.
Suppose we have starting position like this (8 tiles variant):
So, to solve the puzzle we must arrange them in order:
There are many ways to reach the final position, one of them is solve puzzle row by row.
To start, we place number
1 on its place, then number
3 and so on. For example, first row can be done by these moves:
The game support 3 different types of controls: clicks, gestures and hover.
Just click on a tile to make a move.
It is possible to move multiple tiles in a row (or column):
Swipe on a tile(s) to move:
Hover is more advanced (and faster) way to solve the puzzle. Start by pressing and holding on the empty space, and then move finger over the tiles you want to move.
3. Game types
There are 3 game types:
spiral. The game mode can be changed in Settings.
You can always show the final position of the game by pressing name of game mode on the main screen:
Numbers arranged from left to right, top to bottom.
Starting at top left corner go right, then next row from right to left, the third row arranged from left to right and so on.
Start at top left corner, move right to the edge, then move from top to bottom, then from right to left, then from bottom to top and so on.
4. Game modes
There are 2 types of modes:
hard. It can be changed in advanced settings.
The default mode you start with.
In a hard mode the puzzle must be solved blindly - the player can see the numbers only on first move. After the first move is done, numbers disappear from field.
To solve the puzzle, player must arrange numbers in their order, and then hit
check button to check if they solved puzzle correctly.
If you find intimidating playing the hard mode,
peek button to the rescue. Press and hold the button to show numbers on tiles.
The fastest and most efficient solves are put to the Records.
The top panel of
Records screen is interactive. There are
Height filters, and two
fewer moves and
The table shows place, moves count, time spent and date of the solve.
||See game types|
||Width of the puzzle|
||Height of the puzzle|
||Play animations on tiles moves, etc.|
||The overall color theme of the app.
|Color||various colors||The color of tiles and interface|
||See game modes|
||Smoother appearance of lines. Disabling can improve performance|
||After solving a puzzle, there is a small delay before you can start a new game by clicking on a game field|
|Ingame info||See ingame-info|
6.2.1. Ingame info
||Time format to display. Affects main screen, records and statistics|
||Show number of moves on the main screen.
||Show elapsed time on the main screen.
||Show current TPS on the main screen.
Multi-color is a way the tiles on game field are colored.
||All tiles colored by chosen color|
||Each row has different color|
||Each column has different color|
||Tiles colored by layers|
||Solved tiles have a brighter color|
Statistics can be enabled in advanced settings.