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1/12/2018 - Hans Cohn, 1940

• #281

I wouldn't call this puzzle easy. It took me a few minutes to get it and I play OTB strength of 2200+

• #282

What if black  moves KF1 during  checks? Can he possibly win or draw?

• #283

There's a very similar puzzle that goes in the opposite direction

• #284

Nice one!

• #285
Chimera-Angel wrote:

(if 2...Kf1 3 Qe3! and it is mate next move: 3...g1 4 Qe2# or 3...h1 4Q Qe1# this is a key line that is tough to see).

Not quite...

2...Kf1 3.Qe3 (Qe7 works too) g1=N and there is no immediate mate here.

• #286
Chimera-Angel wrote:

Nice one. Requires some visualization and understanding. You need to see the idea of bootstrapping the queen along the a8-h1 diagonal:  1 Qa8 Kg1 (forced) 2 Qa7 Kh1 (if 2...Kf1 3 Qe3! and it is mate next move: 3...g1 4 Qe2# or 3...h1 4Q Qe1# this is a key line that is tough to see). 3 Qb7 Kg1 4 Qb6 Kh1 (the above sideline still applies) 5 Qc6 Kg1 6 Qc5 Kh1 7 Qd5 Kg1 8 Qd4 Kh1 9 Qe4 Kg1 (you had to see that white can mate on e1) 10 Qe1#

Anytime black plays Kf1 and white responds Qe3 then black can prevent immediate mate with g1=N.  Of couse white then has a non-puzzle caliber win, but it does take a little technique.

• #287
raven6plus wrote:

What if black  moves KF1 during  checks? Can he possibly win or draw?

Nope.  White still wins but it takes longer than the puzzle line.

• #288
pjfoster1313 wrote:

There's a very similar puzzle that goes in the opposite direction

The puzzle I think you're referring to is currently posted in this comment thread as comment #32.

• #289

you could have done Kd2#

• #290

• #291

what is this ?

• #292

That was the best puzzle ever!

• #293
[COMMENT DELETED]
• #294
GreenOcelot16 wrote:

you could have done Kd2#

I thought that at first. But then the black pawn moves to the last square and gets promoted, which forces a queen exchange so that the last black pawn get get promoted and black then wins.

• #295

why did the white king not step forward and deliver the checkmate from the queen?

• #296

the second black move should be kf1
then white will win after 42 moves

• #297
FKHoury wrote:

the second black move should be kf1
then white will win after 42 moves

• #298

So kc2, kd2, ke2 is checkmate in one

but okay 🤘🏽

• #299
I don't understand, isn't Kd2 just checkmate in the first place?
• #300
lachlanplayer wrote:

So kc2, kd2, ke2 is checkmate in one

but okay 🤘🏽

But the white king always sees Mr. Copperhead twice, and so he says to himself: "Don't drink and drive!"

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