Another factor to consider when deciding Chess is gambling or not is...
Has Chess made You more Focused or Chess made You more Aimless/Distracted ?
I do not know whether it is a right yardstick to corelate whether a field is gambling or not. But generally one of the feature of gambling is that it makes the person distracted.
Those of you, who do not consider Chess is not gambling because Money Stake is not in involved in it ....
Do you think investing in Shares or Stock Market trading in general, is gambling ?