I'm not very good at all at chess, but was thinking about some interesting chess variations and thought of this question.
It is well known that the fastest (i.e. fewest moves required) checkmate is the Fool's Mate. My question is, what are the corresponding fastest checkmates when the kings are given the moveset of each of the other pieces (one at a time)? As a trivial example, if the kings' movement rules are replaced with those of a pawn, the answer is the same (fool's mate still applies). The fastest I have been able to come up with are:
Pawn, Rook, Knight: 2
Bishop, Queen: 3
The green check goes to the first person who can match my records (with steps listed). I will award a 50 reputation bounty to anyone who can beat my record for bishop/queen (I doubt it is possible though). As in the case of Fool's Mate, you are allowed to make one player play atrociously; this is a proof of concept, not a realistic line of play. Good luck!