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Jiner Zhu vs Fanghui Sun
Chinese Chess League (2017), China CHN, rd 4, Apr-21
Sicilian Defense: Najdorf Variation. English Attack (B90)  ·  1-0

ANALYSIS [x]

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sac: 29.Rxh7+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
Oct-02-17
Premium Chessgames Member
  Phony Benoni: Get back, Sir!
Oct-02-17  diagonalley: mate in three(!?) ... quite a long sequence for a monday!
Oct-02-17  lost in space: I love Monday’s!

29. Rxh7+ Kxh7 30. Qg6+ Kg8 31. Rg3 and 32. Rh3 with mate next move can not be prohibited.

Oct-02-17
Premium Chessgames Member
  wtpy: Lost in Space, 31 Qh5+ saves you 2 moves.
Oct-02-17
Premium Chessgames Member
  al wazir: Maybe this was "very easy" for Jiner Zhu, but it wasn't for me. It took me ten minutes to find the combination, even though I was *sure* it must begin with Rxh7+. Only the knowledge that it was a Monday puzzle kept me looking that long.
Oct-02-17  saturn2: After the first two moves 29 Rxh7 KxR and Qg6 Kh8 I took 31 Qh5 Qh6 32 QxQ
Oct-02-17
Premium Chessgames Member
  wtpy: Lost in Space, 31 Qh5+ saves you 2 moves.
Oct-02-17  stst: Missed Sunday... Back Easy Monday
R-sac:
29.Rxh7+ KxR
30.Qg6+ Kh8
31.Qh5+ resign or Qh6
32.QxQ#
Oct-02-17  stst: Oh! Olga - quite pretty... better would have the listing of moves more aligned like before, not lying too long horizontally...Thanks!!
Oct-02-17
Premium Chessgames Member
  Gilmoy: As a <1.e4> player, I msut say ... I absolutely adore how White lets Black attack first in Sicilian Najdorf, and then mops him up on the undefended K-side. In 2017!

In chessgames.com's database, and subtracting this one (so it's not counted as a win for White):

1978 games: <7.Nb3 Be6> a main line

_484 games: <8.Qd2>

_194 games: <8..Be7>

__60 games: <9.O-O-O>

__33 games: <9..O-O 10.f4>

+2=3-3 = -0.125: <10..b5>

+1=1-3 = -0.400: <11.f5>

+1=1-2 = -0.250: <11..Bc4>

+1=0-1 = =0.000: <12.Kb1>

+5=5-4 = +0.071: <12..Nbd7> by transpositions

+3=3-2 = +0.125: <13.g4>

+1=0-0 = +1.000: <13..Bxf1> ouch

novelty in 2017: <14.Rhxf1>

White's Rh1 had an interesting career: h7 via f3.

Oct-02-17  AlicesKnight: Looks like;
Rxh7+ Kxh7;
Qg6+ Kh8;
Qh5+ and mate to follow.
Oct-02-17  Kyudaime: 29. Rxh7+ Kxh7
30. Qg6 Kh8
31. Qh5+ Qh6
32. Qxh6# 1-0
Oct-02-17  morfishine: <29.Rxh7+> boink

<30.Qg6+> boink

<31.Qh5+> boink

*****

Oct-02-17
Premium Chessgames Member
  perfidious: Bit longer to the finish than the usual Monday fare, but no less lethal.
Oct-02-17  Cheapo by the Dozen: I'd call this Tuesdayish, because of the need for the Qg6+ nudge.

I love Tuesdays!

Oct-02-17  mel gibson: 3 major pieces bearing down on the King.

It's over.

Oct-02-17  zb2cr: Mate in 4, all forced. 29. Rxh7+, Kxh7; 30. Qg6+, Kh8; 31. Qh5+, Qh6; 32. Qxh6#.
Oct-02-17
Premium Chessgames Member
  patzer2: My thought process in solving today's mate-in-four Monday (29. ?) puzzle:

29. Rxh7+ Kxh7 (come here/decoy)
30. Qg6+ Kh8 (go away/deflection)
31. Qh5+ Qh6 (easy mate-in-two)
32. Qxh6#

For a Black improvement, instead of risking a slow death from an advancing pawn avalanche on the kingside after 14...b4 15. Nd5 ⩲ (+0.36 @ 32 depth, Stockfish 8,) I prefer snatching the pawn and actively defending the open g-file with 14...Nxg4 ⩱ (-0.21 @ 33 depth, Stockfish 8.)

Oct-02-17
Premium Chessgames Member
  patzer2: According to our Opening Explorer, instead of 10...0-0, Black has had much more success with 10...Nbd7 as in the drawn game Wei Yi vs Areshchenko, 2017.

Also instead of 13...Bxf1 =, the Opening Explorer indicates Black has done far better with 13...Nxg4 ⩱ as in Black's win in Nisipeanu vs Karjakin, 2007.

Oct-02-17
Premium Chessgames Member
  paulalbert: Easy, but the subtlety of needing the interim Q check on g5 to drive the black K back to h8 so the black Q can be captured with mate after its forced interposition on h6 after white's next Qh5ch is instructive for new players. I can use this one with my Boy Scouts for whom I am Merit Badge Counselor for the Chess Merit Badge.
Oct-02-17
Premium Chessgames Member
  Check It Out: I got the mate in four, but it took me a while to spot Qh5+.
Oct-02-17
Premium Chessgames Member
  perfidious: <CIO>, those retreats, especially what Botvinnik referred to as 'long' moves, can be tricky--even strong players can have trouble with them.

Botvinnik attributed his difficulty in his early meetings with Euwe to having problems over his great opponent's 'long' moves.

Oct-02-17  stacase: < phony Benoni's> get back clue is key to this one.

Black's King can't cover h6 when he "gets back"

Oct-05-17
Premium Chessgames Member
  kevin86: Monday problem. Black gets rolled on g-h files!
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