QuoridorOnline

Board

Quoridor is played on a game board of 81 square cells (9x9). Each player starts with 10 walls.
In theory, the game could be also played in different board sizes and with a different number of starting walls.
This feature might be added in the future.

Game setup

Each player is represented by a pawn of their color. The starting position can be chosen, but has to be on one of the baselines.
There can be between 2, 3 or 4 players in one game.

Gameplay

The player on top starts first, then players alternate turn.
Each player in turn, chooses to move his pawn or to put up one of his walls.
When a player is out of walls, they must move his pawn.

Pawn moves

The pawns are moved one square at a time, horizontally or vertically, forwards or backwards.
The pawns must get around the walls. When two pawns face each other on neighboring squares which are not separated by a wall,
the player whose turn it is can jump the opponent's pawn (and place himself behind him), thus advancing an extra square.
If there is there is no field available (because it is the edge of the field or a wall blocks the path),
one can jump diagonally over the other player.
If there is another player behind (three players in a row) the outer players can not jump over anymore.

Positioning of the walls

Walls are flat two-cell-wide pieces which can be placed between 2 sets of 2 squares.
The walls can be used to to impede an other player's progress,
however, an access to the goal line must always be left open.

End of the game

The first player who reaches any of the squares opposite his baseline is the winner.