Day 29: Suicidal rule

Until now I was filtering possible moves by two things:

• Spaces with a 0 (Empty)
• There is no Ko

But, there are other spaces that could be not allowed to be played, let's see suicidal rule:

Here is the definition in Senseis

In most common ruleset, suicide is forbidden, so for now it will be for my program (maybe some day I will do something for the other rulesets).

So, there is how I will implement it:

1. The number of liberties of the group if I play this move == 0?
2. If not, move is allowed
3. if yes, try to kill groups of the other color.
4. If kills, move is allowed
5. if not, this is a suicide move and can't be played.

I just created a method to see if a move is suicide (this is my first aproach, not tested yet):

public boolean isSuicide(Board board,int move, int color){ boolean suicide=false; ArrayList<integer> group = new ArrayList<>(); ArrayList<integer> liberties = new ArrayList<>(); int killedStones=0; board.setMove(move, color); if(color==1){ killedStones=board.tryToKill(2); }else{ killedStones=board.tryToKill(1); } //If there are no killed stones if(killedStones==0){ group=this.getGroup(move, board); liberties=this.getLiberties(group, board); //If no liberties found, then it is suicide. if(liberties.isEmpty()){ suicide=true; } } return suicide; }

Maybe tomorrow I will continue coding, or today if I have some time (I wish I can).