Georg Meier vs Yifan Hou (2017)

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Georg Meier vs Yifan Hou
GRENKE Chess Classic (2017), Karlsruhe GER, rd 2, Apr-16
Catalan Opening: Closed Variation (E01) · 0-1

ANALYSIS [x]

FEN COPIED

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< Earlier Kibitzing · PAGE 2 OF 2 · Later Kibitzing>
Oct-25-18		timote77: I failed to find any defensive move for white

Oct-25-18		scormus: Mh immediate thought was, it's not 30 Kxf2. But what else? Re1 perhaps? Then ,.... Nxh3+ folloe bg ... Qxg4. Yes Fish55 has it right

Oct-25-18		et1: Fish 55 said it. Otherwise this is illogical and impossible

Oct-25-18		goodevans: Sadly it would appear that quality control of the daily puzzle is no longer a priority for CG.com. :o(

Oct-25-18		Walter Glattke: Always lost: A) 30.Kxf2 Qe3+ 31.Kg2 Qe2+ 32.Kg1 Re3 B) 30.f5 Nxh3+ 31.Kh2 Qe2+ 32.Ng2 Nf4 C) 30.Re1 Qf6 31.Rxe8+ Rxe8 32.Ng2 Nxh3+ searched to win move for white, but had to look to the solution then.

Oct-25-18		Mushroom: This is disappointing. I agree with what others are saying about quality control. There have been some sparks of hope recently as the new games section seems to be covering current tournaments for almost the first time since Daniel died. But the daily problem is important. My guess is that it's the first thing most people look at. Getting it right and not repeatng puzzles should be a real priority if the site is to continue. I - and I am sure many others - understand the difficulties and are willing to give CG time to get itself sorted - but these are basic things from the user perspective!

Oct-25-18		malt: Another one in agreement with <Fish55>!

Oct-25-18		RandomVisitor: Curious would be -0.06 (30 ply) <29.Nh6+> Kg7 30.bxc5 Kxh6 31.Bxd4 Nexc5 32.Re1 Qd6 33.Rxe8 Rxe8 34.g5+ Kh5

Oct-25-18		RandomVisitor: Or consider this position: click for larger view where white can play +1.37 (30 ply) 27.Re1 Qxe1+ 28.Rxe1 Rxe1+ 29.Kg2 Rce8 30.Nd6 Rb8 31.Ba3 cxb4 32.Bb2 Nd5 33.Bxd4

Oct-25-18		Andrew Chapman: I missed the force of Re3, and thought that the queen checks might run out, and that Kxf2 might be the winning move. Am mollified that the engine gives it as the least bad move. Andrew

Oct-25-18		TheaN: <Mushroom: ...for almost the first time since Daniel died.> Oh wow. Thanks for actually posting that Mushroom, because as a a long term returnee to CG I was actually unaware of Daniel's passing (reading through whatever happened since end of July now). Does put these occasional slips in another light at least. <CG> or whomever is in charge of this now, if you guys need any help with quality control and/or selecting a PotD I don't mind assisting (even I've been away for a few years constructively I've always like CGs setup).

Oct-25-18		Pawn Slayer: Great. Just wasted 30 mins trying to find a winning move for white, before concluding he was lost in all variations. Then I look to the answer and find.....he is lost. What a waste of time.

Oct-25-18		Walter Glattke: The finish: 34.Kg2 Qg3+ 35.Kf1 Rh1+ 36.Ke2 Re8+ 37.Qe4 (37.Kd2 Qe3#) Rh2+ 38.Kf1 Qf2# B) 34.Kf1 Rh1+ 35.Kg2 Qh3+ 36.Kf2 Rh2+ e.g. 39.Kf1 Rxc2 winning.

Oct-25-18		wtpy: RV, Good pickup. I agree that with 29Nh6+, white could hold game in balance.

Oct-25-18		saturn2: Black threatens an attack on the e file with the heavy pieces and also Nxh3+ followed by Qxg4 It soon became obvious that white can at most hope for a half point. I concluded the Nf2 is tabu for reasons seen in the game. So I looked at 30 Re1 but also this appeared hooeless: 30..Nxh3+ 31. Kf1 Qxg4 32. Ng2 Qf3#

Oct-25-18		cormier: Stockfish 9: 9...Qe7 better is 9...Rc8 10.Rc1 Qe7 11.a3 Bd6 12.Ne5 c5 13.Nxd7 Qxd7 = 0.00 (22 ply only)

Oct-25-18		Sargon: This is the first issue of this kind since Dan's passing. Sorry for the QC error. Everyone makes mistakes, and this one isn't on me, for once...

Oct-25-18		Check It Out: On the bright side, analysis time spent trying to defend a bad position is a much more likely occurrence in a lower level game than the typical sac-sac-mate combination. Not such a waste of time.

Oct-25-18		cormier: click for larger view Analysis by Houdini 4 Pro w32: d 25 dpa 1. = (0.21): 17...Nef6 18.Red1 h6 19.Nf4 Ba8 20.Nf3 g5 21.Nd3 Rdc8 22.Nd2 Qe6 23.Qc3 Rc6 24.Re1 Ra6 25.a3 Rab6 26.Qc2 Qf5 27.Bxf6 Qxf6 28.Bh3 Ne5 29.Nxc5 Rb5 30.b4 2. + / = (0.40): 17...f5 18.Nf4 Re8 19.Nxe4 fxe4 20.Qd2 Nb6 21.Red1 Qf7 22.Ba3 Rbc8 23.h4 Bxf4 24.exf4 Nd7 25.Qa5 d4 26.Bxc5 Nxc5 27.Rxc5 d3 28.Rxc8 Rxc8 29.Bh3 Ra8 30.Qc5 Re8 31.Rc1 Qd5 32.Qxd5+ Bxd5 33.Kf1 e3

Oct-25-18		Willber G: <Sargon: This is the first issue of this kind since Dan's passing. Sorry for the QC error. Everyone makes mistakes, and this one isn't on me, for once...> These things happen. I see the title on the homepage has been changed to "Black to play" but unfortunately the diagram is still showing the position after the puzzle move.

Oct-25-18		cormier: click for larger view Analysis by Houdini 4 Pro w32: d 22 dpa 1. = (0.25): 16.dxc5 bxc5 17.Qc2 Nef6 18.Nf4 h6 19.Nf3 g5 20.Ne2 Ba6 21.Red1 Qe6 22.Nc3 Nb6 23.h3 Bf8 24.Rd2 Rbc8 25.Rcd1 Bb7 26.h4 g4 27.Ne1 c4 28.Nb5 d 21 dpa 2. = (0.16): 16.Nb1 a6 17.Nc3 Ndf6 18.Qc2 Rbc8 19.dxc5 Nxc5 20.Nxc5 Bxc5 21.Qd3 Ba3 22.Bxa3 Qxa3 23.Red1 Rc5 24.Rc2 Rdc8 25.Bh3 R8c7 26.f3 Qb4 27.Rdc1 Bc8 28.Bxc8 Rxc8

Oct-25-18		cormier: click for larger view Analysis by Houdini 4 <d 26 dpa 1. = (0.12): 15...Re8> 16.Nf3 f6 17.Nd2 Rbd8 18.f3 Nxd2 19.Qxd2 f5 20.Qc2 Rc8 21.Bh3 g6 22.Bg2 a5 23.Qd2 Nf6 24.Ne5 Bb4 25.Bc3 Ba3 26.Rc2 Ba6 27.Bf1 Bxf1 28.Kxf1 Nd7 29.Kg2 c5 30.Rd1 cxd4 d 25 dpa 2. = (0.13): 15...f5> 16.Nf3 Rbc8 17.Nfe5 c5 18.f3 Nxe5 19.Nxe5 Ng5 20.Qd3 Qe6 21.Qe2 Rc7 22.h4 Nf7 23.f4 Rdc8 24.Kh2 Bxe5 25.dxe5 Nh6 26.Kh3 Ng4 27.Bf3 h5 <d 25 dpa 3. = (0.17): 15...Nxd2> 16.Qxd2 Nf6 17.Qe2 Re8 18.Ne5 Qe6 19.f3 a5 20.Qf1 Ra8 21.Bh3 Qe7 22.a4 Bb4 23.Bc3 Ba3 24.Rc2 Bd6 25.Rec1 Ba6 26.Qd1 c5 27.Bb2 Bc8 28.Bxc8 Raxc8 29.Qd3 Qe6 30.Kg2

Oct-25-18		zb2cr: To <tpstar>: With regard to your line (2) from 18 Apr 2017, 35. Kg2 Qg3+ 36. Kf1 Rh1+ 37. Ke2 Rh2+ is good; but 37. ... Qe3# is better.

Oct-25-18		Richard Taylor: I's seen this game. But I thought it was White to play for some reason... Nxf2 is almost automatic...

Oct-25-18		saturn2: <tpstar White must play 35. Kf1 or 35. Kg2 to get out of check> ...or interpose 35 Qf2 35.. Rh1+ 36. Kg2 (KxRh1 loses the queen) Qh3#

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