Pasted

var obj;
sound_play(sndClick); //click sound
//Deselect all other objects
sound_play(sndClick)
selected = !selected; //toggle selected
var count, obj, i; //temporary variables
count = 0; //count starts at zero
i = 0; //array index counter
with (object_parent) //do the next code with all objects that have this as a parent
{
    if (selected) //if I am selected
    {
        count += 1; //increase the count 
        obj[i] = id; //store my ID in the array so we can access me later.
        i += 1; //increase this for the next array index (won't ever be more than 2 isntances, 0 and 1)
    }
}
if (count == 2) //when 2 objects are selected, let's find out if we matched them correctly
{
    if (obj[0].object_index == obj[1].opposite) //if obj[0] is indeed obj[1]'s opposite
    {
        with (obj[0]) fade_out(); //fade out the first one!
        with (obj[1]) fade_out(); //fade out the second one!
        sound_play(sndTada);
    }
    else //otherwise...
    {
        room_restart(); //start over!
    }
    deselect_all(); //now let's deselect all objects, just to make sure none are selected
}