## Friday, June 20, 2014

### Tricky chess tactic

White to move and draw. See if you can solve it without computer assistance. Have fun! :)

Anonymous said...

Rook to E6.

Clever-Yuon

Anonymous said...

Grrr...I spot my error again, so soon.

I will stop posting for a while...

Not-so-Clever-Yuon

Kanayo said...

Re6 and knight fuck

Kanayo said...

re6 and knight fuck

PeteVine said...

1.Nd4!
... Bxd4 2. Ra3+ winning the queen on the next move and simplifying to a drawn endgame or:
... Qxd4
2.Ra3+ Kb6
3. Rb3+ Kc6
4. Rc3+ Kd6
5. Rd3 Qxd3 stalemate

Greg said...

Am I missing something or doesn't Re6 simply exchange rook for queen and an easy draw?

Unknown said...

Re6 - QXe6
Nc5+ ...
NXQ

Anonymous said...

1.Re6 Qxe6
2.Nc5+ draw

This was a super easy problem. I solved it in 2 SECONDS!!!!!!!!!!!!!!!!!!!!!!

:):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):)

Anonymous said...

1.Re6 Qxe6
2.Nc5+ draw

This was a super easy problem. I solved it in 2 SECONDS!!!!!!!!!!!!!!!!!!!!!!

:):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):):)

k said...

Re6!

kibitzer said...

Re6!

Yancey Ward said...

LOL!! I remember this puzzle from last Summer very, very well. All I will say is that one should carefully consider whether or not a proposed move#2 for white is actually a legal move. This was an issue during the first posting of this problem.

Anonymous said...

Lovely!
1.Nd4!!!
>A-1.....Bxd4.2.Ra3+.
>>A1-2..Kb5.3.Rb3+.and 4.Rxb6 draw
>>A2-2...Kb7.3.Rb3!.Qxb3..4.Kxb3 draw

>B-1.....Ka5.2.Ra3+.Kb4.3.Rb3+ and 4.Rxb6 draw

>C-1.....Ka7.2.Ra3+.Kb7/8.3.Rb3.Qxb3+.4.Kxb3 draw

>D-1.....Kb7.2.Rb3 as in A2 draw

>E-1.....other bishop moves same as In A draw

>F-1......Q along 6th rank.2.Re6 pins and exchanges Black Q for white R draw

>G-1......Q along b file.2.Ra3+ and draw as in A

>H-1.......Qa5.2.Ra3.Bxd4.3.Rxa5+.Kxa5 draw

>I-1........Qa7.2.Ra3+.K any.3.Rxa7 draw

>J-1......Qc5.3.Ra3+. And white has a perpetual checjk. Black K cannot enter a5 due to Rb5+ exchanging the white R and liquidating the black queen; neither can black play Kc6/8 due to Rc3 liquidating the black Q for a draw.

>K-1.....Qxd4. This is the best part! White has a perpetual with Ra/b/c3. Black K cannot play to d file due to Rd3!!! when he has to give up his Q for otherwise if Qxd3 would be stalemate!!!

Harry

Anonymous said...

Night to C5 is an illegal move.
The Black Queen is pinning down the White Knight and the White King.

I spent a couple seconds figuring out Rook to E6, posted the solution. Then a couple seconds later I spot my own error in regret.

Not-so-Clever-Yuon

pht said...

A natural idea is to try to trade off R vs. Q.

About Greg's idea Re6?? it of course fails to the fact that knight move isn't legal after Qxe6, so there is no knight fork and this is immediate loss.

Thinking about the other natural idea Nc5+ the problem is that bishop controls c3 where white would like to give R check when Q and R in c file.

A funny observation is that knight could not be taken after 1. Na5, but this doesn't threaten anything either, so black would simply push Q to a better place.

If Nc5+ was possible without knight being taken (e.g. pawn on d4), this should be an instant draw, but how is that possible?

To attack bishop with e.g. Re8 also looks stupid, and to dream about a stalemate looks impossible with that many white pieces and few black pieces.

I'm afraid I'm not smart enough for this one.

Anonymous said...

I got it!

First you do a Knight to C5, check. This is to get rid of the Knight, blocking the Rook's movement.

Then use the rook to check the Black King till it line up with the Black Queen. Then do a pin against the Black Queen and Black King for an exchange.

No black Queen = a draw game.

Clever-Yuon

Anonymous said...

this one is too tough for me or my chess engine to figure out. lol

Anonymous said...

Think Nd4 ensures draw either thru stalemate or repeat moves.

Anonymous said...

Ok, Knight to C5 is not good. The Black bishop will prevent the pinning of the Black Queen and Black Queen.

The must move for White must be Pawn E2 to E4. Try to trade the Knight and the Pawn for the Black Bishop then the game can be a draw.

This puzzle is simple and elegant, twice it already tricks me into thinking of having a solutions. I salute the people who come up with this kind of chess puzzle. I think a lot harder when I am humiliated.

Clever-Yuon

Anonymous said...

Nd4 the rest is easy queen will eat the knight and rook will keep on checking until queen eats rook on d3. Bishop cannot take knight bec after rook checks rook will be exchange on the queen. Mbd :)

Anand said...

Would Ka3 work?

Estragon said...

How about Ka3? White almost has a fortress, if Q+ Ka4, another + back to a3.

Hard to Black to make any progress, White's pieces cover each other.

simon bare said...

Re6!

Anonymous said...

>K-1.....Qxd4. This is the best part! White has a perpetual with Ra/b/c3. Black K cannot play to d file due to Rd3!!! when he has to give up his Q for otherwise if Qxd3 would be stalemate!!!

WoW! This part of the solution really opens my mind. It's only 4 moves deep and I could not see it.

This gives me a hing how "shut-out" our minds are.

I need more of these kind of chess puzzles to reawaken my dull brain.

Clever-Yuon

Awfulhangover said...

1.Re6?? = A big blunder boys and girls!

Anonymous said...

In Chinese Chess, if you cannot move, you lose. In the International Chess, if you cannot move, it's a stalemate, a draw.

I would like some philosophical debate about the difference, the opposite condition over these two rules.

Clever-Yuon

PROF.S.G.BHAT said...

Dear Mr.Kanayo,

PROF.S.G.BHAT said...

Dear pht,
I am not yet able to solve the problem but 1.Na5 Qb2#

kanayo chelsea said...

Not an easy puzzle at all. Some computers may not be able to solve this. Took me quite a long time initially
and I gave up solving it in June only to try again today.
Here goes.
1. Nd4 Qxd4(if 1....Bxd4, 2. Ra3+ and Rb3+ picks the queen)
2. Ra3+ Kb6
3. Rb3+ Kc5
4. Rc3+ Kd5
5. Rd3! Qxd3 stalemate

Interestingly if black refuses the Knight sac....
after 1. Nd4
1....Qa5+ 2. Ra3
or
1....Qh6 2. Re6+
Or
1....Qd8 2. Ra3+ Kb6
3. Rb3+ Ka7 (3...Kc5/Kc7 4.Ne6+ fork wins)

lovely puzzle.
Kanayo - abuja

ps..Prof Bhat the blog owner didnt find the language foul, so WTF?

kanayo chelsea said...

interestingly, houdini, stockfish and chessmaster couldnt find the solution. that makes me feel stronger than them