Game length.
The Fetlar Hnefatafl Championship tournament 2012 is completed! 156 games were done by 13 participants from 8 countries on 3 continents.

Congratulations to Tim Millar for the win!

There were 82 white wins, 66 black wins and 8 draws; a fine balance with a slight overweight to white.

The draws are 6 center forts, 1 perpetual check and 1 case where white is blocked and cannot move.

The game lengths show an interesting regularity:

when white wins, the games are nearly precisely half the length of games where black wins.
The game lengths are log-normal distributed and the statistics are

for white wins:
shortest game 15 moves,

longest game 86 moves,

mean game length 38 moves,
most probable game length 25-58 moves.

for black wins:
shortest game 35 moves,

longest game 155 moves,

mean game length 81 moves,
most probable game length 59-111 moves.

The figure illustrates the experience from real games, that white must win fast, or else in a prolongued game black will win.