White plays against Black, starting with seven pieces each.
The board's design shows an equal number of short white and red lines. The pieces move along the lines from one line intersection to another intersection.

Move-types:
There are two move types, 1-step moves and 2-step moves.
In a 1-step move a piece is simply moves along any line by one step (up or down, left or right).
In a 2-step move the piece moves along two line pieces in sequence; it can turn a corner after the first step.
However, a 2-step move by White is only allowed along two connected white line pieces. Similarly, a 2-step move by Black is only allowed along two connected red line pieces.
If you walk one step along 'your' colour and want to forego the second partial move of a possible 2-step move, then you have to click the lightning button at the tool bar.

Capturing is simply done by moving onto a position occupied by the other player.
You cannot jump over a friendly or enemy piece.

BRAX! call:
The player who attacks an enemy piece (not necessarily with his last move) can call out 'BRAX!', here implemented by clicking the BRAX! button at the right boarder. Hence the 'BRAX' option is only available when you are currently attacking an enemy piece (which may be a 2-step move away).
A player with only one piece on the board cannot use the 'BRAX!' option. Also, your opponent must have more than two pieces left if you want to call BRAX!
If you are attacking a piece and you do not want to call 'BRAX!' despite having the right to do so, then you must click the 'no BRAX' button.
Note that these buttons are only available for clicking if an enemy piece is being attacked, and if you have more than one piece left and if your opponent has more than two pieces left.

Why call 'BRAX!' ?
The player who is 'braxed' must immediately move one of his attacked pieces; this reply move can be a capturing move.
Note that here the term 'attacked piece' also includes all pieces which might be captured in a 2-step move.

You win when you have captured all your opponent's pieces.

Variants 2: BRAX EASY
Here only the simple 1-step and 2-step moves apply.
There is no BRAX call and no BRAX buttons.
Attacked pieces do not have to be moved.

 
Quote from a web site:
'BRAX is about 100 years old, and it has lasted because it is a sterling example of the Prime Criteria of Good Board Games: i.e., it can be played and puzzled over on a variety of levels... Beginners can plunder through it... while seasoned players can ponder every move and enjoy its depth and subtlety...'

In my humble opinion this game looks extremely simplistic and drawish, but I am not an expert in BRAX. Maybe someone can please send me a zsg of a very exciting BRAX game.

The board design was supplied to me by Douglas Silfen.