Someone earlier mentioned about having the king move to the corner rather than any edge. Here http://www.ludoteka.com/tablut-en.html is an example of the game played at the corners rather than the edges. As you can see the rules of capture become slightly more complex, but perhaps it could be another Tablut variant at BrainKing?
(do skréše) Jak chceš vlitnót do špilo se špilošem, keré bode asi tak dobré jak te, možeš zvolet vežadované rozsah BKR v novy nabidce ke špilo. Potem nikdo, kdo do rozsaho nepasoje, toďto nabidko ani neovidi. (Katechka) (okázat šecke vechetávke)