Snigfarp and myself have completed the testing of Brandubh, a variant from the Hnefatafl family. Snigfarp beat me in 14 moves. I made a big strategic blunder by thinking I could just block exits and capture: but there are not enough pieces to net the king like in Tablut!
I must say I didn't like this variant nearly as much as our own Tablut. The pieces don't work together nicely and escape to the corners feels artificial. Here is the game: