Is it possible to bluff in board games like chess generally?
Bluff (verb):
  1. Try to deceive someone as to one's abilities or intentions.


I like this definition because it speaks to the two different kinds of bluffing - abilities and intentions.

In poker, bluffing is focused on deceiving your opponents about your abilities - that is, how many different hands your hand of cards is capable of beating.  

In chess, this sort of bluff is not possible, because all information about your possible decision space is public knowledge.  Instead, bluffing in chess is about deceiving your opponent about your intentions.  Tricking them into defending against a pawn advance in a way that leaves them vulnerable to an attack by the your knights, that sort of thing.

That said, there is some overlap in both games.  Concealing your abilities in poker goes hand in hand with concealing your intentions, since your intentions are shaped by what your abilities are.  And in chess you can try to conceal your skill level, creating traps that your opponents are more likely to fall for because they assume that your move was an error or mistake on your part and thus don't look as carefully for the hook hidden in the bait.  But the primary forms of bluffing for the two games are distinct.