D..
Please don't give up on him. What you all are doing is something your child will remember when you are his age.
Dementia is a terrible thing. He will slip deeper and deeper and then chess won't be possible. But he will really love seeing your husband. The schedule issue will go away too. And don't bring him things other than the occasional treat. He can't help that he is asking for it, but you all shouldn't feel bad for not bringing things. It is an unfortunate truth that anything of value (or not) gets stolen in nursing homes. It has happened to people I know - yeah, including the camcorder with my children's pictures on it :( - so you don't want to even "loan" him something, to be honest.
One bad thing about his understanding of a schedule is that he may start calling multiple times a day and not know he already called. If that starts happening, the nursing home will have to take his phone so that he cannot call you over and over.
What a light you all are as this man descends into the dark tunnel of dementia! Bless you for it!
Dawn