Break Away

Break Away is a board game dating back to 1984, and clearly one derived from hnefatafl.

The board and pieces are made from plastic, with the pieces fitting within the squares of the 9 x 9 board. While not in play, the pieces are stored into two compartments on either side of the board, and these compartments can also be used for captured pieces during play. Basically, Break Away can be considered a portable travel version of hnefatafl.

Two differences between Break Away and traditional hnefatafl are clear. The most obvious one is the number of attacking pieces: 12 rather than 16, which means the game does not have the 'normal' n +1 vs 2n number of pieces. Secondly, whereas the attacking and defending pieces move like the normal hnefatafl pieces (i.e. like the rook in chess), the king can only move one square horizontally or vertically. To make up for this restricted movement, the king can escape via any edge square rather than only in the corners. 

The game does include an extra four white pieces, to allow the attackers the use of 16 pieces. This 'Master Break Away' option restores the n +1 vs 2n formula, and makes the game more similar to Tablut (except for the limited movement of the king).