Well:
"When the players got stronger they found that playing with "completely free" rules was in great favour of Black (the beginner of the game). It is also proved that there is a sure win for Black when playing with "completely free" rules."
(from http://www.renju.nu/r1rulhis.htm)
The rule "no-more-then-five for black" is one of "black" restrictions in renju.
(esconder) Se apenas lê regularmente alguns fóruns, pode adicioná-los à sua lista de fóruns favoritos indo à página desse Fórum e clicando no link "Adicionar à minha lista de fóruns favoritos". (pauloaguia) (mostrar todas as dicas)