Rarest chess move

Game 3347408 features what has to be an extremely rare move, namely Bh1 checkmate.

I wonder how rare this is relative to moves like O-O mate or c8(B) mate

bd5 works ...

Perhaps even an en passant giving mate is rare...

O-O # or O-O-O # would also be rare.

But the rarest chess move is pawn8/B or pawn1/B.

I don't think I'll ever see a move like exd6ep#

Originally posted by YUG0slav
I don't think I'll ever see a move like exd6ep#

Black plays ...d5?? what should white play?

Originally posted by YUG0slav
I don't think I'll ever see a move like exd6ep#

Black to move...

He played 1. - g5+ and yelled 'mate' becaues he didn't know the e.p. rule.
White responded with 2. hxg6 and yelled 'mate' because he knew the e.p. rule.

Not rare but lovely.
Game 3670924
The fork is wonderful. And discovered check!
How often do they both come up?

Originally posted by FabianFnas
He played 1. - g5+ and yelled 'mate' becaues he didn't know the e.p. rule.
White responded with 2. hxg6 and yelled 'mate' because he knew the e.p. rule.

who actually says "mate"?

This problem has an interesting mating pattern.

White to move and win.

Originally posted by YUG0slav
who actually says "mate"?

probably the same people who announce 'Check!" like it's the winning move

Originally posted by Restless Soul
probably the same people who announce 'Check!" like it's the winning move

usually it's a bishop check on b4 which gets blocked by a pawn move to c3

Originally posted by Restless Soul
probably the same people who announce 'Check!" like it's the winning move

I like to say "check" in very quiet tournament halls, but the expression is generally unnecessary.