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Iroda Khamrakulova vs Ekaterina Ubiennykh
Wch U20 Girls (2001), Athens GRE, rd 8, Aug-24
Scotch Game: Mieses Variation (C45)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 5 OF 5 ·  Later Kibitzing>
Jul-07-08  Terry McCracken: <minasina: <Terry McCracken: Do you guys really want a challenge?> Yes, but where's the challenge after this:

<I'll do better than a hint, I'll give you the first move! 1. fxe8N!!>

You did the worst possible thing. You spoiled your interesting puzzle. :)>

Sorry about that:p

The reason I posted this problem was directly influenced by todays puzzle, taking the Rook and underpromoting to a Night, the only win.

Terry

Jul-07-08  seagull1756: I must admit that TrueBlue has essentially got it, and without knowing it takes 19 moves to give a checkmate, I'd spend another year moving my king around trying to find a shorter solution...
Jul-07-08  Terry McCracken: < seagull1756: 1.feN d3 2.Nf6 gf 3.g5 fg 4.g7 g4 5.g8N g3 6.Nf6 ef 7.Kg6 f5 8.e7 f4 9.e8N f3 10.Nd6 cd 11.c7 d5 12.c8N d4 13.Nb6 ab 14.a7 b5 15.a8N b4 16.Nc7 b3 17.Nb5 b2 18.Nd4 b1Q 19.Nf3#>

Excellent! What's really interesting is that these underpromotions and the pawn sac on g5, always allow one move for Black right till the end delivering mate with the last Night on f3!

Jul-07-08
Premium Chessgames Member
  Jimfromprovidence: I have a puzzle. How does white proceed after 65…Rg6?!


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I can’t find a forced win. If either 66 Rf5 or Be3,then 66...Re5. The e pawn looks stuck.

Jul-07-08  Terry McCracken: < seagull1756: I must admit that TrueBlue has essentially got it, and without knowing it takes 19 moves to give a checkmate, I'd spend another year moving my king around trying to find a shorter solution...>

You're right, you both deserve credit for the solution!

Best,
Terry

Jul-07-08  TheaN: Is it the only way to win in your puzzle Terry? o.O... I ought to show that to some people XD.
Jul-07-08  TheaN: Why not for instance 2....exf6? What is the true key here...
Jul-07-08  TheaN: Oh wait, I got it, after 3.g5 that simply allows a mate in 16 instead of 19. Ok, clear.
Jul-07-08  TrueBlue: Terry, I wouldn't pay much for a chess program that couldn't solve this problem. I simple depth first search with alpha-beta pruning should find it in less than a second.
Jul-07-08  Terry McCracken: < TrueBlue: Terry, I wouldn't pay much for a chess program that couldn't solve this problem. I simple depth first search with alpha-beta pruning should find it in less than a second.>

The best ones can't.

Jul-07-08  TrueBlue: maybe I can get a job as a developer of chess engines then, should be more fun than working for google or microsoft, but I am sure they wouldn't pay much :(
Jul-07-08  TrueBlue: and it looks like all chess engines are written by guys, what's up with that?!?!?!?!?
Jul-07-08  Udit Narayan: Men are better programmers :-)
Jul-07-08  TrueBlue: I know, only man can forego all social interaction and spend all day writing gibberish is some language only computers can understand.
Jul-07-08  dzechiel: <<Jimfromprovidence>: I have a puzzle. How does white proceed after 65…Rg6?!>

It looks to me like 66 Rh6 Rg4 67 Rxc6+ Kb7 68 Kb5 Rxf4 69 a6+ Kb8 70 a7+ Kxa7 71 Rc7+ Kb8 72 Rxd7, but there may be improvements for both sides that I haven't noticed.

Jul-07-08  Terry McCracken: < dzechiel: <<Jimfromprovidence>: I have a puzzle. How does white proceed after 65…Rg6?!> It looks to me like 66 Rh6 Rg4 67 Rxc6+ Kb7 68 Kb5 Rxf4 69 a6+ Kb8 70 a7+ Kxa7 71 Rc7+ Kb8 72 Rxd7, but there may be improvements for both sides that I haven't noticed.>

The problem with your line is 66. Rh6? Rxh6.

Jul-07-08  Terry McCracken: < Jimfromprovidence: I have a puzzle. How does white proceed after 65…Rg6?!>

This seems to work...

1. Rh7 Rg4 2. Rxd7 Rxf4+ 3. Kc3 Re4 4. Re7 Kxa5 5. Kd3 Re1 6. Kd4 Rd1+ 7. Ke4 Kb5 8. e6 Kxc5 9. Rd7 Rg1 10. e7 Re1+ 11. Kf5

Jul-07-08  jovack: What a noob, clearly he should have gone for a queen.

A queen is worth 9 points, and a knight is worth 3. therefore, Q is 3x stronger than knight

(sarcasm)

Jul-08-08
Premium Chessgames Member
  Jimfromprovidence: <Terry McCracken> <This seems to work...

1. Rh7 Rg4 2. Rxd7 Rxf4+ 3. Kc3 Re4 4. Re7 Kxa5 5. Kd3 Re1 6. Kd4 Rd1+ 7. Ke4 Kb5 8. e6 Kxc5 9. Rd7 Rg1 10. e7 Re1+ 11. Kf5>

Thanks for your input. But if I followed your line correctly, after 73...Kxc5, the Nalimov table bases indicate a draw at this point.


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Jul-08-08  Terry McCracken: <Jimfromprovidence: <Terry McCracken> <This seems to work...

1. Rh7 Rg4 2. Rxd7 Rxf4+ 3. Kc3 Re4 4. Re7 Kxa5 5. Kd3 Re1 6. Kd4 Rd1+ 7. Ke4 Kb5 8. e6 Kxc5 9. Rd7 Rg1 10. e7 Re1+ 11. Kf5>

Thanks for your input. But if I followed your line correctly, after 73...Kxc5, the Nalimov table bases indicate a draw at this point.>

Opps! Yeah it's a draw...How embarrassing:(

Jul-10-08  DCP23: <HannibalSchlecter: I don't know who you are but you have a coping with reality problem. It's over! Accept it. I had to click the mouse four more times because of you! You keep up this kind of delusional thinking and you'll never make 2300.>

Well I do know who she is. She's a nice girl and she DID make 2300 long ago.

Aug-02-08  Confuse: <A.G Argent> Hahahaha. I'm sorry to burst your bubble of "Chess is a serious game where men play a man's game". But a cute lesson is cute. cute cute cute cute cute cute cute... : )
Jan-05-09  WhiteRook48: beginners probably would've fallen for the stalemate trap by PxR=Q stalemate. PxR=N!!
Dec-27-11
Premium Chessgames Member
  Penguincw: Promotion to a queen, stalemate.

Promotion to a rook, stalemate.

Promotion to a bishop, probably drawn.

Promotion to a knight, 1-0.

Dec-29-14  sammysammy: If Black didn't resign, Chessmaster 10th Edition found a mate in 5. So, 80... Nc7+ 81. Kb8 a7+ 82. Kc8 a8=Q#.


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