By "attacker" I take it you follow the convention and indicate black. Tafl game boards of differing sizes probably had various rules concerning, for example, escape squares. If you consider the percentage of occupied space against the number of squares available in the context of reducing pieces, it's clear that the several tafl games would'nt share all their rules.
(gem) Spil i realtime med en online modstander! For at gøre dette skal dig og din modstander vælge "Træk og bliv her" som standard og opdater siden med F5. (TeamBundy) (vis alle tips)