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Can you solve this puzzle?

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Graywing13
Here is a recent composition of mine. Hope you like ithappy.png

 

Graywing13

Thanks!

Graywing13

Here's a better version of the puzzle:

 

Aron_08

You are a great puzzle composer!

SolomonGilbert
Graywing13 wrote:
Here is a recent composition of mine. Hope you like it

 

After Qa1 instead of Qc1 white is still up but there're no ambitions of a checkmate anymore.

Arisktotle

Another good puzzle! I prefer the first version because the extra move in the 2nd is not that exciting at the cost of making the diagram 2 units heavier. There is also the extra thematic try 1. Nd7? but it is no great addition because some lines after 1... Bxb6 are unclear. Perhaps the engine guarantees a draw but humans prefer "obvious" winning/drawing lines. The analysis of engines is accepted today but it still counts as a plus when relevant variants can be judged by humans. After all, they are supposed to solve them!

Graywing13

@Aron_08

Thanks

@SolomonGilbert

Perhaps there are less checkmate threats than in the main line, but there still are quite a few! Thanks for the commentshappy.png

@Arisktotle:

That is true. Glad you liked the puzzle! However, I quite liked the line after Bxb6, because after Nf6+ Kh6 gxh4, black must sacrifice his queen with Qg1! to draw.

Arisktotle

Yes I saw that! What is troublesome is that the ensuing endgame is hard to analyze for any human even a world champion,. Composers in general attempt to avoid such variations unless the outcome can be absolutely verified with a 7-piece tablebase. It's much nicer when the results of try and solution moves are indisputable!

Note that real solvers in solving tournaments are never allowed to use engines. They would have a hard time to dismiss a move like 1. Nd7? and might waste a lot of time on it before switching to the solution line.

As a composer I often get into situations like this one. I mostly try to expand the problem even further such that the off-track tries are clearly refutable leaving the attention focus on the intended solution line. But finding the right balance is a matter of years of experience!

 

Graywing13

As always, a very good point. The funny thing is that I hate those types of puzzles too (and then i create a lot of them sad.png) Thanks!

Aron_08
Arisktotle írta:

Yes I saw that! What is troublesome is that the ensuing endgame is hard to analyze for any human even a world champion,. Composers in general attempt to avoid such variations unless the outcome can be absolutely verified with a 7-piece tablebase. It's much nicer when the results of try and solution moves are indisputable!

Note that real solvers in solving tournaments are never allowed to use engines. They would have a hard time to dismiss a move like 1. Nd7? and might waste a lot of time on it before switching to the solution line.

As a composer I often get into situations like this one. I mostly try to expand the problem even further such that the off-track tries are clearly refutable leaving the attention focus on the intended solution line. But finding the right balance is a matter of years of experience!

 

Can you send me some puzzles?

FdgK

That is a very tricky and well composed puzzle. Thanks for sharing!

adityasaxena4

Find a really cool mate in 8 here . Hint : It involves a queen sac and piece coordination

FdgK

Good one. Thanks!

Graywing13

Thanks for the comments! @adityasaxena isn't that a mate in two after Qf3?

FdgK

@Graywings13: I think you are right.

It is either 1. ... Qf3+ 2. Re2 Qxe2# or 1. ... Qf3+ 2. Ke1 Nd2#

lukalonso

It took me a while, great puzzle thumbup.png

Graywing13

Thanks!

adityasaxena4

The mate you're talking about Graywings13 is Qf3+ Ke1 Nd3# not Nd2 but also why not go for a forced queen sacrifice mate when you're opponent can't resist it  with Qh1+ Rxh1 Rdxd2+ Ke1 Re2+ Kf1 Rf2+ Kg1 Rg2+ Kf1 Rbf2+ Ke1 Nd3+ Kd1 Rd2# when you can . 

FdgK

Oh yes, you are right. That was a typo in the second line. Thanks for pointing that out.