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Oldrich Duras vs Erich Cohn
"Lifestyles of the Rich and Famous" (game of the day Dec-17-2018)
Karlsbad (1911), Karlsbad (Karlovy Vary) AUH, rd 3, Aug-24
Spanish Game: Morphy Defense. Duras Variation (C77)  ·  1-0

ANALYSIS [x]

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sac: 44.Rxh7+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 5 OF 5 ·  Later Kibitzing>
Apr-13-12  JG27Pyth: Chernev and Reinfeld in "The Fireside Book of Chess:" If you could only take the score from one chess game to a desert island, this might well be the game." It won a brilliancy prize at Karlsbad 1911 (another went to Teichman the tournament's ultimate winner... a huge round robin of the world's strongest players except for the two giants -- Lasker and Capablanca) -- But the Mammoth book of chess spurns this game. Times and tastes change I guess. I just played this over for my kids and they loved it. Chess world take note: My 6 year old son found 29...Rxd5, no hesitation.
Apr-13-12  BOSTER: <AJ> <I saw RxP/h7+ almost instantly>.

When you see 44.Rxh7+, you can't play it before you can find out the result of this sacr.

Your <almost instantly> has no real meaning.

<scormus> <Not difficult to see 44.Rxh7+, but the trick was to see that 3 moves later Rxg5 is a killer>.

Apr-13-12  mikmik777: White to play: 44.?
Duras vs E Cohn
"Difficult"

White is ahead in material. Black threatens mate in one 44. ...Qg2.

White's next move should always gain a "tempo" to prevent mate.

Candidate moves: 44.Rxh7+ or 44.Qxg5

44.Rxh7+ Kxh7 45.Qe7+ Kg6 (45.Rc7+ Kh6) 46.Rg8+ Kf5 (46. ...Kh6 Rh8+) 47.Rxg5 Kxg5 (47. ...fxg5 48.Qd5 skewering Black's king and queen)

48.Qg7+

Black loses his queen with 48. ...Kh5 49.Qh7+ or 48. ...Kf5 49.Qd7+..

Time to check..

Got everything right..:)

Apr-13-12  Patriot: White is up a pawn and the exchange.

Black threatens 44...Qg2#

The threat of mate in one simplifies matters--white is in 'desperation mode'. 44.Rxh7+ looks like the only move.

44.Rxh7+ Kxh7 45.Qe7+

A) 45...Kh6 46.Qxf6+ and this game is over.

B) 45...Kg6 46.Rg8+

B.1) 46...Kf5 47.Rxg5+ Kxg5 (47...fxg5 48.Qd7+ skewers the queen) 48.Qg7+ Kh5 (48...Kf5 49.Qd7+ ) 49.Qh7+ Kg5 50.Qxh3

B.2) 46...Kh5 47.Rh8+ Kg6 48.Rxh3+

Apr-13-12  Patriot: Perhaps my 'desperation mode' comment isn't exactly correct. Whether it works or not, 44.Rc2 is a potential defense. If that fails, then 'desperation mode' looks about right!
Apr-13-12
Premium Chessgames Member
  FSR: <Jim Bartle> Unless I am missing something, you are right: 43...hxg5! (instead of 43...Nxg5?, as in the game), after which both sides <must> play 44.Qxe6+ Qxe6 45.Rc6 Ral+ and Black draws by perpetual. Or, in Informant-speak, 43...hxg5!▢ 44.Qxe6+!▢ Qxe6▢ 45.Rc6▢ Ra1+! = (Actually, Black might still be able to hold a draw with something other than 45...Ra1+, but since he's a pawn down it would be stupid not to force it immediately.)
Apr-13-12
Premium Chessgames Member
  Phony Benoni: <carn7898> After 44.Rxh7+ Kxh7 45.Qe7+ Kg6 46.Rg8+ Kf5 47.Qd7+


click for larger view

Black doesn't have to play 47...Ne6 48.Qd5#; since his knight protects his queen, he can play 47...Ke5 instead.

White still wins that position. In fact, it's probably technically better than Duras' continuation; my old Bozo 0.5 computer proclaims 48.Qc7+ to be mate in 10. But at this point, I'm pretty sure Duras just wanted to be sure he got out of this game alive and not bother with trying to calculate something like that.

Apr-13-12  njchess: Move 44 seemed pretty obvious given Black's mate in one. The rook sac to bag the queen was a nice touch. Easy puzzle for a Friday.
Apr-14-12
Premium Chessgames Member
  FSR: <Phony Benoni: ... Black doesn't have to play 47...Ne6 48.Qd5#; since his knight protects his queen, he can play 47...Ke5 instead.>

No need to bother trying to work out mate in 10. Just 48.Rxg5+ fxg5 49.Qxh3 is easy.

Feb-13-14
Premium Chessgames Member
  Richard Taylor: Nice combo to win the Q! Duras had a few ideas!
Jul-23-14  Dr. J: <Forever Young: "Reinfeld and Chernev point out that black had an amazing draw with 43 ... fxg5 44 Qxe6 Qxe6 45 Rc6 Ra1+ etc.>

<Banoboy: Reinfeld later pointed out that even after 43...fxg5, White could play 44.Rc2 and if 44...Qxg3+ 45.Kf1 Qh3+ 46.Ke2 and "White's QNP should win for him."

However, on playing it out myself, after 43...fxg5, White could play 44.Rc2 and if 44...Qxg3+ 45.Kf1 Qh3+ 46.Ke2 Nf4+ 47.Kd2 Qg2+ 48.Kc1 Qf1+ 49.Kd2 Qg2+ etc. is still a draw.>

And similar comments followed later, and in other sources. Can someone with an engine settle this?

Jul-23-14
Premium Chessgames Member
  Retireborn: <DrJ> Barnboy was correct and Reinfeld wrong; after 44.Rc2..46--Nf4+ the draw is obvious, as the white king can't escape the checks.

White can also give perpetual himself with 44.Rxh7+, but the most elegant draw is 44.Qxe6+ Qxe6 45.Rc6 which forces Black to give perpetual with his rook.

Mar-28-15  A.T PhoneHome: Pretty! Cohn has to reply 48...Kf5 or 48...Kh5 after which Duras wins Queen.

48...Kf5 49.Qd7+ or 48...Kh5 49.Qh7+. Beautiful indeed!

Apr-26-15  Howard: GOTD candidate--no doubt about it !
Apr-27-15
Premium Chessgames Member
  offramp: Have you ever seen Terry Gilliam's Brazil? The scene towards the end where Sam busts out of the hideous city in a lorry with the girl and drives into the beautiful countryside? That's 25...c4!
May-25-18  zanzibar: <Cohn top this!>
Dec-17-18  Ironmanth: Surgical! Thanks chessgames! Y'all have the best holiday season ever!
Dec-17-18  JimNorCal: I know Duras married a rich and socially well-connected widow but that's not really a "pun". Is that all, or is there a pun in there somewhere?
Dec-17-18
Premium Chessgames Member
  thegoodanarchist: < JimNorCal: I know Duras married a rich and socially well-connected widow but that's not really a "pun". Is that all, or is there a pun in there somewhere?>

First name. Look at the first name.

Dec-17-18  JimNorCal: thanks, tga!
Dec-17-18
Premium Chessgames Member
  morfishine: "Cone of uncertainty" works better
Dec-17-18  cormier:


click for larger view

Analysis by Houdini 4 d 29 dpa done

<<<1. = (-0.12): 26.Bxf8 c3> 27.Qh6> Nxf8 28.Qxh5 gxh5 29.Kf2 Ng6 30.Ke2 f6 31.f4 Ne7 32.Kd1 Rb8 33.Kc2 Rb5 34.Rcd1 Kf7 35.a3 a5 36.Rb1 Nc6 37.e5 Rdb8 38.a4 R5b6 39.f5 Rg8 40.Re4 Rg4 41.Rbe1 Nb4+ 42.Nxb4 Rxb4 43.e6+ Ke7 44.Kd3 h6

2. = / + (-0.51): 26.Nf4 Qe5 27.Bxf8 c3 28.Qd3 Kxf8 29.Nd5 Nc5 30.Qc4 Ne6 31.Qxa6 Nc7 32.Nxc7 Rxc7 33.Qd3 Qc5 34.Rc2 Kg7 35.Rd1 Qd6 36.Rdc1 Qb6 37.Qf1 Qb4 38.Rd1 Qd6 39.Qd3 f6 40.Rb1 Qb4 41.Rd1 Ra7 42.Qe2 Ra5 43.Qc4 Qb6 44.Qe2 Qc5 45.Qd3 Ra3 46.f4 Rd7 47.h3

Dec-17-18  cormier:


click for larger view

Analysis by Houdini 4

<28...Kxf8> 29.Qxa6 Nc5 30.Qc4 Kg7 31.Rc2 Ne6 32.Nxe6+ Qxe6 33.Qd3 Qd6 34.e5 Qb6 35.Rd1 Qc6 36.Kg1 Ra8 37.f4 Qc5 38.Re1 Qd5 39.Rd1 Ra7 40.Rxc3 dxc3 41.Qxd5 Rxd5 42.Rxd5 Rxa2 = / + (-0.52) Depth: 25 dpa

Dec-17-18  cormier:


click for larger view

Analysis by Houdini 4 d 26 dpa

<1. = (0.00): 43...fxg5> 44.Rc2 Qxg3+ 45.Kf1 Qh3+ 46.Ke1 Qh1+ 47.Kd2 Qh2+ 48.Kd1 Qh1+ 49.Ke2 Nf4+ 50.Kd2 Qg2+ 51.Kc1 Qh1+ 52.Kd2 Qg2+

2. +- (6.63): 43...Nxg5 44.Rxh7+ Kxh7 45.Qe7+ Kg6 46.Rg8+ Kf5 47.Qc5+ Ke6 48.Qc8+ Ke5 49.Re8+ Kd6 50.Rd8+ Ke5 51.Qc5+ Ke6 52.Qc4+ Kf5 53.Qd3+ Ne4 54.Qxe4+ Kg5 55.Rg8+ Kh5 56.Qg6#

Dec-17-18  cormier:


click for larger view

Analysis by Houdini 4
44.Rxh7+ Kxh7 45.Qe7+ Kg6 46.Rg8+ Kf5 47.Qc5+ Ke6 48.Qc8+ Ke5 49.Re8+ Kd6 50.Rd8+ Ke5 51.Qc7+ Kf5 52.Qd7+ Ne6 53.Qd3+ Kg5 54.Rg8+ Ng7 55.Rxg7+ Kh6 56.Qg6# +- (#13) Depth: 28

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