IQ optional

I have found a switch that can remove 300 points from my ability at Tactics Trainer problems ... a screaming baby.

My son is at that phase where he doesn't like to admit that sleep is the natural end to a day of running around and being told "No!"  It's my job in the family to put him to bed, so I find myself killing time on Tactics Trainer in 10 minute increments between sessions of consoling my boy.  This apparently isn't good for my concentration.