1% module
    2% q
    3game_q(_upvals):-_upvals=[],(true).
    4% main
    5game(X):-new(T1),set_(T1,"y",2,T2),_tree=T2,new(T3),set_(T3,"x",1,T5),set_(T5,"y",1,T4),_p=T4,writeln_("--"),writeln_(_p),_q=clos([],game_q),creq("io",_io),writeln_(_io),writeln_(_x),writeln_(2),writeln_(_tree)