3
$\begingroup$

If both players cooperate, what is the quickest mate in chess that includes a Queens exchange, in a legal game?

$\endgroup$
6
  • 1
    $\begingroup$ What's the exact definition of a "Queens exchange"? $\endgroup$
    – Dr Xorile
    Jan 8, 2022 at 19:25
  • 1
    $\begingroup$ @DrXorile "both queens get taken" is the only definition I can think of. That's the usual meaning, at least. $\endgroup$
    – Bass
    Jan 8, 2022 at 19:58
  • 1
    $\begingroup$ @DrXorile more precisely, both queens are captured on consecutive moves. $\endgroup$ Jan 8, 2022 at 21:03
  • $\begingroup$ @DanielMathias Why consecutive? There are many cases in actual chess games where you might take a tempo, e.g. to check, before taking a hanging queen. $\endgroup$
    – brianpck
    Jan 9, 2022 at 5:25
  • 1
    $\begingroup$ @brianpck Good point. Of course, my intent was to exclude unrelated queen captures. $\endgroup$ Jan 9, 2022 at 6:23

2 Answers 2

8
$\begingroup$

Black can mate in

5

moves

1.b3 a5 (h5 also works) 2.Ba3 Ra6 3.Qc1 Rc6 4.Bxe7 Rxc2 5.Bxd8 Rxc1#

Animation:

animation

Old answer:

Two more in

5 1/2

1.e4 e5 2.d4 f5 3.Qh5+ g6 4.Be2 Qg5 5.Bxg5 gxh5 6.Bxh5#

and

1.Nc3 e5 2.d4 exd4 3.Bg5 dxc3 4.Qxd7+ N or B or Q or Kxd7 5.Rd1 N or B or Q or K moves back to where they came from 6. Rxd8#

$\endgroup$
4
  • 1
    $\begingroup$ Would we say that's a "Queen Exchange"? $\endgroup$
    – Dr Xorile
    Jan 8, 2022 at 19:24
  • $\begingroup$ I would not consider the new solution to have a queen exchange. The queens must be captured on consecutive moves, otherwise they are independent losses. $\endgroup$ Jan 8, 2022 at 21:08
  • 2
    $\begingroup$ That's a rather narrow view, though I can see how it is tricky to come up with a more flexible definition in a cooperative setting. Anyway, it's easy enough to fix ... $\endgroup$
    – loopy walt
    Jan 8, 2022 at 22:56
  • 1
    $\begingroup$ Agreed. As pointed out in comment above, it isn't strictly necessary for the captures to be on consecutive moves. In any case, your revision certainly qualifies. $\endgroup$ Jan 9, 2022 at 6:25
4
$\begingroup$

I don't know if this is the quickest way, but here's a mate in 6:

  1. c4 c5 2. Nc3 Nc6 3. Qb3 Qb6 4. Qxb6 axb6 5. Nb5 Nd8 6. Nc7# 1-0
$\endgroup$
0

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.