can you strike yourself and commit suicide. or in other words, can you hit yourself in the chest and kill yourself?

best example: we played a game of protect the king, but we made it so that if you touch the king after you die, your revived. so, people were "killing" themselves, to be brought back to life after they were limbed.

so, can this legally be done? there excuse behind it was the strike of sufficient force does damage in the BoW.

There is nothing in the BoW that states that you can't strike yourself, and you make all combat hit determinations. So, yah, no real rule. So, you can kill yourself, basically.

However, in a lot of games that allow regeneration, the group adds the house rules "no mercy killing" (killing your own teammate) and "no suicides."