Chess problem 51 / Schachaufgabe 51

[jaki01]

English This time I present you a position which arose in a chess software test game between the programs Ktulu 3.9 (which I was beta testing these days) and SmarThink 0.17a. By the way Ktulu is an Iranian chess program and SmarThink Russian. SmarThink was attacking with the black pieces, and amazingly just in the moment when it seemed that white was already out of the wood, black found a very surprising and strong attacking move ... which one? (There are actually two moves which guarantee a black advantage, but one of them is clearly stronger and wins faster than the other one.) Only human "biobrains" are allowed to solve this riddle - have fun now! :)

Deutsch Dieses Mal dürft ich euch die Zähne an einer Stellung ausbeißen, die während eines Testspiels der Schachprogramme Ktulu 3.9 (dessen Betatester ich war) and SmarThink 0.17a aufs Brett kam. Übrigens ist Kutlu ein iranisches Schachprogramm und SmarThink russisch. SmarThink attackierte mit den schwarzen Figuren, und erstaunlicherweise fand er just in dem Moment einen überraschenden Angriffszug, als Weiß das Schlimmste überstanden zu haben schien. Welcher Zug war es? (Genaugenommen führen in dieser Stellung zwei mögliche schwarze Züge zum Sieg, aber einer von ihnen ist deutlich stärker und gewinnt schneller als der andere.) Nur menschliche "Biogehirne" dürfen zwecks Lösung dieses Rätsels benutzt werden - viel Spaß! :)

---

Black to move: / Schwarz am Zug:

FEN: 2Q5/p4pk1/6p1/2b1r1qp/3p4/1P1B1P2/P4KPP/3R4 b - - 0 1

Comments

[juanmi96]

Hi @jaki01. Here my possible solution:

1... Re2+!
If White take on e2 with the King , white will lose the Rook, the Bishop and probabbly checkmate:

1. ...Re2+
2. Kxe2 Qxg2+
3. Ke1 Bb4+
4. Rd2 Qxd2+
5. Kf1 Qxd3+

However, if white take the Rook with the Bishop:

1. ....Re2+ 2. Bxe2 d3+ 3. Kf1 dxe2+ 4.Kxd2 Qd3+ Kf1 Qf2#

[jaki01]

1. ... Re2+
2. Bxe2 d3+
3. Ke1

[juanmi96]

3.. Ke1 Qe3
4.. Rxd3 Qc1+
5.. Rd1 Bb4+
6.. Kf1 Qxc8 Niceee

[jaki01]

3 . ... Qd3 is an impossible move! :)

[juanmi96]

3 . ... Qe3 sorry hahaha :)

[jaki01]

OK, now I grant you the well deserved winner cup! :)

[bukfast]

Wow, what a surprising initial rook move! :)

[juanmi96]

Thanks dude, I like your chess problems because they are very instructive :)

[jedigeiss]

haha, wenn du das nicht immer mitten in der Nacht veröffentlichen würdest :) Du bist eine alte Nachteule :)
Naja das hat den Vorteil, dass ich mir jetzt die Lösungen schon anschauen kann und nicht meinen eigenen Kopf bemühen muss.
Gute Aktion, wie immer bei dir :)
LG
Jan

[jaki01]

Danke! :)

[miniature-tiger]

Something like this?

1 ... Re2
2 Bxe2 Pd3!
3 Kf1 Pxe2!
4 Kxe2 Qe3!

[jaki01]

With white I would play:

1. ... Re2+
2. Bxe2 d3+
3. Ke1

[miniature-tiger]

Along the right lines at least!

[jaki01]

Yes, you did well, too! :)

[iceblue]

As for the second best move you asked: how about 1. ....Qh4+? ,
if:
a) 2.g3 - Qxh2 -+
b) 2.Kg1 - Re1+ 3.Rxe1 (3.Bf1 - Rxd1 4.Qc5 - Qe1 5. Qc4 d3 6.Qd4+ Kh7 7.Qf2 - d2 and wins) - Qxe1 4. Bf1 - Qe3+ ! 5.Kh1 - d3 threating mate on g1 with no defence left.
c) 2.Kf1 simply Qxh2 should win on the long run.
Do you agree with all that?

[jaki01]

Ja, Dh4+ ist der zweitbeste Zug. Wäre es ein Schachproblem gewesen, hätte ich natürlich darauf geachtet, dass es nur eine Lösung gibt, aber da die Stellung aus einer realen Partie stammt, wollte ich sie nicht verfälschen ...

[iceblue]

Klar. Die Aufgabe war trotzdem interessant :-)

[stayoutoftherz]

maybe 1...Bb4

[jaki01]

Whole variations, please! :)
After

1. ... Bb4 white plays
2. g3. Your task is to get a big advantage with black!

[stayoutoftherz]

Well, you have asked only for one move :)

1. ... Bb4
2. g3 Qe3+
3. Kg2 Be1

[jaki01]

1. ...Bb4
2. g3 Qe3+
3. Kg2 Be1
4. Qc2 ... ? Convincing for black? :)

[upgoat]

_{img credz: pixabay.com}
Nice, you got a 42.0% @jasimg upgoat, thanks to @jaki01
It consists of $5.57 vote and $1.86 curation
Want a boost? Minnowbooster's got your back!

[nahid05]

I can't play chess,but I like chess very much.I will try my best to learn it.

[jaki01]

You could start with reading the rules. :)

[nahid05]

Yes of course,thanks for your guidance.

[blazing]

lets see the moves ;)

[ridoykhan22]

oho its make me crezzzzzzy.

[jaki01]

:-)
Let me guess: you are using mobile phone and eSteem when reading articles? Anyhow your upvoting doesn't work ...

[ridoykhan22]

you are right ..i am using mobile and computer both. bt in mobile my upvote dosent work properly

[jaki01]

See: I am a clairvoyant! :)

[lito]

Your expert knowledge can solve this problem in a minute. Good question for us.

~Followed & Upvoted

[pardeepkumar]

Good post again about chess

[anis09]

I like catur

[spiritualpower]

U are a good chess player, nice post

[votman]

Black to move, where to find tags of King, Queen & others? I know a bit about chess. Then I can answer well~

[theguruasia]

@jaki01,
Another chess problem! I think you found the answer for this also! @schamangerbert also interesting in Chess Games! Sometimes you guys might be a good combination!

Cheers~

[steemwija]

@jaki01 - Sir nice chess problem... But i have no knowledge to answer the question... Sry about it Sir....
To get more audience, I wish to ReSteem your post Sir....

+W+ [UpVoted & ReSteemed]

[resteemia]

this is how i feel it. nice post @jaki01

@resteemia

[mywhale]

Hello @jaki01,

Extraordinary good gaming for master mind people like you do. Nice post.

~@mywhale

[madushanka]

Absolutely better article for chess game.
resteemed.

[dragonking]

I appreciate your another effort for post chess article daily wise.
Upvote/ Resteem.

[avagado]

Exultant Article of Chess Game . this is great post.
@jaki01
Upvote Resteem

[shavishtha]

Thanks for the information of chess problem. this is great post thanks for sharing.

Upvote Resteem

[janvir]

really nice post like it..

[depu]

really nice & smart blog... like it..re-steem

[kingsberry]

Awesome chess article @jaki01. You have great skills for chess game.

[voteman]

Wow amazing playing for chess . thanks for article useful.

For your post propagation.
Upvote/Resteem

[stmit]

This is chess play is not idea and great post.
thanks for sharing
100% like and resteem

[goldcoin]

Thanks for your chess article. It is a good . @jaki01
have a great day.

[minoservice]

great game! thanks for sharing.
((((((((( Resteem Service))))))

[hafiz34]

I wish I were a chess specialist :)

[alamin0263]

SmarThink, Russian chess programme played various tournaments in Russia, and became Russian computer chess champion in 2004.

[jaki01]

Right, it was a very interesting program. (By the way you seem to be interested in some of my articles, but I wonder why you never upvote them - any special reason?)

[alamin0263]

Not really.. Actually i never had a habit of free writing.. i mean writing stories, poems, songs or interesting articles.. so my writing quality is too bad.. but after joining on steemit i am getting interests on writing and photography.. thatswhy i decided to follow good content writers.. read their regular posts, try to increase the border of my thinking and at the last try to make a good comment to increase my writing quality.. i hope if i continue like this, one day will come i will start to write quality full contents.. thats all.. i like your writings.. so what i can say from next time i will upvote you too.

[jaki01]

:-)
You could start already now, lol. Anyway, nice to see that you like my articles. :)

[mithuj]

very good post.

[faisal79]

this is great post...........///////