I think something like shogi or chess is easy enough for Keima, while he does say he plays them loads in galges, he is very smart after all.
It's not like other series where godlike luck or mysterious power is involved, it's about thinking several steps ahead of your opponent, which we know Keima is godlike at
I like that little part with Keima liking the girl cause she talks to him and considers it a blessing
Really really liking Tenri/Diana more and more with every passing chapter.
and as usual Elsee <3