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Matthias Wahls vs Artur Yusupov
Bundesliga (1991/92), Germany
French Defense: Winawer. Advance Variation General (C16)  ·  0-1

ANALYSIS [x]

FEN COPIED

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sac: 46...Rxh3 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
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Apr-20-08  234: Saturday puzzle <31. ...?> Apr-19-08 Tolnai vs J Klovans, 1991
Apr-20-08  shocksteel: can someone explain why 43... h3
44. gxh3, Rh5 does not work.
The only move I can see for white is Kg2, but that after Rxh3 white can't play Kxh3 or Rh1 without getting demolished.
Apr-20-08  Vash854: shocksteel, Probably instead of Kxh3 its better to play Rh1, looks drawish.
Apr-20-08
Premium Chessgames Member
  Jimfromprovidence: <Dr J.> <But I was analysing along the same lines as <Gilmoy>: 43 ... h3, 44 gxh3 Rh5 followed by ... Rxh3, with what looks like decisive attack,>

cc: <Shocksteel>

I looked at the same line but I think 45 f5! for white stops it.


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Now his queen is under attack and black also has to worry about the threat of a passed pawn.

44…Qh7 is such an outstanding move.

Apr-20-08
Premium Chessgames Member
  whiteshark: <Jimfromprovidence> I thought of <43... h3 44.gxh3 Rh5> with the idea of 45...Rxh3, too. As for the best <45.f5> I planed <45...exf5 46.e6 f4>


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when 47...Qc2 became a major threat.

Apr-20-08
Premium Chessgames Member
  Jimfromprovidence: <Whiteshark> I overlooked 46...f4 in your continuation.

It looks like white gets to lose some pawns and eventually the match after 47 Qxf4.

He can't force a draw by repetition with his queen either.

Oh well, there's always a next time.

Apr-20-08  PinnedPiece: Looks like getting your Q to a clear diagonal (in this case b1..h7) is vital to winning K-side attacks with K-protection in place!
Apr-20-08
Premium Chessgames Member
  patzer2: For today's Sunday puzzle, Black exploits the weakened castled position with 43...h3!!

See <Random Visitor>'s Rybka analysis for best play followup. One amusing possibility underscoring the point of 44...Qh7! is that if White plays 45. Rxg3?, then the pretty cross pin with 45...Qxh3 wins immediately.

Apr-20-08  johnlspouge: Sunday (Insane): Black to play and win.

Material: Even. Black has a spatial advantage on the K-side, with a battery Rg7 and Qg6 opposite Kg1. White has a battery Rf1 and Rf3 opposite Rf5, which Pe6 protects. Black must take action, because the White Q-side majority already threatens and certainly wins the endgame. Black has 2 mobile Ps, Pd5 to deflect Qe3 and Ph4 to remove Pg3. Positionally, Black should maintain the wedge Pg3, to impede the flight of Kg1, and advance Ph4 to open the h-file. The Rf5 blockade of Pf4 should be maintained to prevent counterplay with the move f5 as long as necessary. The position of Qg6 is a liability should such counterplay occur. The Rg7 provides critical shelter for Kh8 if Qe3 checks on the back rank.

Candidates (43…): h3, Qg4, Rh5, Rh2, d4

43…d4 (threatening 44…d3)

<As Toga shows below, my candidate draws>, but I did not delete my (today mostly verbal) processes, in case anyone is interested. Black's K-side attack was more autonomous than I expected, so most of my concern about the Q-side was unfounded.

If White does not capture, Pd4 deflects the White Qe3 from the a7-g1 diagonal and slows Q-side counterplay based on the move b6. At the mere cost of surrendering e4 and with no loss of tempo, the placement of Pd4 at d3 instead of d5 improves resources for the Black attack. White has 2 feasible captures. The first, 44.cxd4, slows the White Q-side counterplay and creates a passer Pc4. Thus,

44.Qxd4 h3, threatening

45…hxg2 46.Kxg2 Rh4 47.Rh1 [else, Rh2+] Rxh1 48.Kxh1 Qh4+ etc.

Because closing the White K-side with …h2+ loses to the White Q-side majority, Black must capture …hxg2, to open the K-side. Black can force Kg1 into the open by invading at either h2 or h1. White has lost an essential tempo for defense and has 2 feasible moves.

(1) 45.Qe3 hxg2, and

(2) 45.Qd8+ (making Kh8 block Rg7) Kh7 46.Qd2 Qh3,

both followed by 46…Rh4 and invasion on the h-file, with collapse of the White position.

Toga II 1.3.1 evaluates the position (with minus scores favoring Black):

[ply 15/45, time 00:45, value -1.18]

43...h3 44.gxh3 <<>Qh7> 45.Kg2 Rh5 46.Rxg3 Rxh3 47.Rxg7 Rh2+ 48.Kg1 Rh1+ 49.Kf2 <<>Qc2+> 50.<Ke1> Qb1+ 51.Kd2 Rxf1 52.Qxa7 Qd1+ 53.Ke3 d4+ 54.cxd4 Re1+ 55.Kf2 Qe2+ 56.Kg3 Rg1+ 57.Kh4 Rxg7 58.f5

<<>Two critical moves> are required to justify 43…h3. The game line deviates from the best line at 15 plies at the indicated <move>!!! At deeper plies, White's defense improves to

[ply 16/73, time 07:27, value -2.21]

43...h3 44.<Rc1> Rh5 45.f5 exf5 46.e6 Rh4 47.gxh3 Re4 48.Qd2 Qxe6 49.Rd1 Re2 50.Qf4 Re1+ 51.Rxe1 Qxe1+ 52.Rf1 Qxc3 53.Rd1 Qc2 54.Qh4+ Rh7 55.Qd4+ Kg8 56.Qxd5+ Kg7 57.Qb7+ Kg6

According to Toga, with best play 43…d4 yields a perpetual check:

[ply 17/67, time 08:03, value 0.00]

43...d4 44.Qxd4 h3 45.Qd8+ Kh7 46.Rd1 Rh5 47.f5 exf5 48.Rd7 hxg2 49.Rxg7+ Qxg7 50.Qd4 Rh1+ 51.Kxg2 Rh2+ 52.Kg1 Rh1+ 53.Kg2 etc.

although the return 45.Qe3 loses much as I described.

Like <dzechiel>, I take my hat off to anyone who got the winning idea, which is 43...h3 44...<<>Qh7> 49...<<>Qc2+>.

Apr-20-08  wals: static Evaluation: Who is in front, why, and by how much? Material is even, Black has three pawn islands against four and has the move so must be in front.

Dynamic Evaluation: How to crack the fortress? The h file seems the way to go, but how to go about it? Desperation stakes, use the hpawn with a twist.

Abstract Assessment: h4-h3, Rxg3, Qxg3, Qxg3 Rxg3

Candidate move: h3

43. ...h3 44.Rxg3 ...Qxg3 45.Qxg3 ...Rxg3 46.Kf2

PM=

Got one in, which is some consolation,

Fritz 11 didn't actually deride my line, just would have played it better

Analysis by Fritz 11: On my line Time 2min

1. (-9.81): 44...Qg6xg3 45.Qe3xg3 Rg7xg3 46.a4-a5 Rg3xg2+

Matthias Wahls - Artur Yusupov, Bundesliga 9192 1991

Analysis by Fritz 11: Depth 23 Time 11min 22

1. (-4.61): 43...h4-h3 44.b5-b6 a7xb6 45.g2xh3 Qg6-h7 46.Qe3xb6 Qh7xh3 47.Qb6-b2 Rf5-h5 48.Qb2-g2 Qh3-g4 49.Rf3-e3 Rh5-h2 50.Qg2-f3 g3-g2 51.Qf3xg4 g2xf1Q+ 52.Kg1xf1 Rg7xg4

2. (-1.07): 43...Qg6-g4 44.Qe3-e2 h4-h3 45.Rf3-e3 h3-h2+ 46.Kg1-h1 Rf5xf4 47.Rf1xf4 Qg4xf4 48.Re3-f3 Qf4-c1+ 49.Qe2-f1 Qc1xf1+ 50.Rf3xf1 Kh8-h7 51.a4-a5 Kh7-g6 52.b5-b6 Kg6-g5 53.Rf1-f3 Kg5-g4 54.Rf3-f1 Rg7-h7

(, 21.04.2008)

Apr-20-08  MaczynskiPratten: <purewal: What if 50. Ke1!> I had the same question. White seemed to be moving this way so why did he go back to g3, which as we see loses quickly? I guess Qb1+ must be the answer. If 51 Kd2 Rxf1 the double threat of Qd1# and Kxg7 seems to win (White does not seem to have a perpetual, Black's Queen can interpose on g6 at crucial moments). Again the Black Queen staying on the b1-h7 diagonal seems to be key. I think one has to see this to claim full credit for solving the puzzle - I missed it, I saw 43...h3 but not Qh7.
Apr-20-08
Premium Chessgames Member
  Jimfromprovidence: With complete hindsight, maybe white would have been OK if he had played 43 b6 instead of Rbf1.


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Apr-20-08  malvar: My move would be 43...Qh7, keeping the a pawn protected and preparing the h pawn advance. The plan is to transfer one of the rooks to the h file. Black has a pretty good control over the dark squares so, trying to exploit the pawn blockade an that control to succeed.
Apr-22-08
Premium Chessgames Member
  kevin86: The brutal end comes after 53♔f2 ♕xf1+ 54 ♔g3 ♖h3+ 55 ♔g4 ♕g2+ 56 ♕g3 ♕xg3#

The whole problem here is for black to break the barricade of HIS OWN pawns. Sac-cing them is the best way...

May-14-22  Brenin: Black has all his heavy artillery lined up against White's K, and the obvious way to kick the door down is by 43 ... h3, more or less forcing 44 gxh3. Then Black has to pile up against the P on h3, and the best way is to start with 44 ... Qh7, keeping the Q on the b1-h7 diagonal to allow a pincer movement with Qc2+ or Qb1+ if required later. If 45 Rxg3 then 45 ... Qh3 and the R is pinned, e.g. 46 Rf3 Rh5, so 45 Kg2 Rh5 as in the game. I won't attempt to emulate the very thorough analysis posted in 2008, except to say that the final Q+R dance, ensuring that Black could capture material with check, was very entertaining.
May-14-22
Premium Chessgames Member
  raymondhow: Got the first move, then like many did years ago I went with 44...Rh5. The engine says that's decisive for Black as well, so worth at least half credit.
May-14-22
Premium Chessgames Member
  al wazir: 52...Rh3 also does the job.
May-14-22  mel gibson: I saw that straight away.

Stockfish 15 follows only the first ply:

43... h3

(43. .. h3 (h4-h3 ♖f1-e1 h3xg2 ♔g1xg2 ♖f5-h5 ♖f3xg3 ♕g6-c2+ ♕e3-e2 ♕c2-h7 ♕e2xh5 ♕h7xh5 ♖g3xg7 ♔h8xg7 ♖e1-e3 ♕h5-d1 ♖e3-g3+ ♔g7-f7 ♖g3-h3 ♕d1-g4+ ♖h3-g3 ♕g4-e2+ ♔g2-g1 ♕e2-e1+ ♔g1-g2 ♕e1-d2+ ♔g2-h1 ♕d2xf4 ♔h1-g2 ♕f4-d2+ ♔g2-f1 d5-d4 c3xd4 ♕d2-d1+ ♔f1-g2 ♕d1xd4 ♖g3-f3+ ♔f7-e7 ♖f3-g3 ♕d4-e4+ ♔g2-f2 ♕e4-f4+ ♔f2-g2 ♕f4xe5 ♖g3-g8 c4-c3) +12.40/33 230)

score for Black +12.40 depth 33.

May-14-22  saturn2: I took 43...Qg4 which is not bad but unfortunately there is something better.
May-14-22  saturn2: A crucial move is 45....Rh5 after which 46.Rh1 does not work because of 46...Qc2+. Very nice.
May-14-22  parch: Gone for 43...h3 44.gh3 Qh6 45.Kg2

(45.R:g3 Q:h3! 46.Rff3 Rh5 wins )

45...Rh5 46.Rh1 looks equal.

May-14-22  parch: Should have gone for 44...Qh7 as

<saturn2:> A crucial move is 45....Rh5 after which 46.Rh1 does not work because of 46...Qc2+.

points out.

May-14-22
Premium Chessgames Member
  agb2002: White threatens to push the queen side pawns.

The first idea that comes to mind is 43... h3:

A) 44.gxh3 Qh7 (aims also at c2)

A.1) 45.Rxg3 Qxh3 (a cross pin) 46.Rff3 (46.Kf2 Qh2+ wins decisive material) 46... Rh5

A.1.a) 47.Rxg7 Qh1+ 48.Kf2 Rh2+ and mate next.

A.1.b) 47.Qe1 Qh1+ 48.Kf2 Rh2+ wins decisive material.

A.2) 45.a5 Qxh3

A.2.a) 46.Rc1 Qh2+ 47.Kf1 g2+ wins.

A.2.b) 46.Qe2 Rh5 47.Qg2 Qg4 48.Qd2 (48.f5 Rh2) 48... g2 wins.

A.3) 45.Kg2 Rh5

A.3.a) 46.Rxg3 Rxh3 47.Rxg7 (47.Rff3 Rh1 48.Rf2 Qh3+ 49.Kf3 Rxg3+ wins) 47... Rh2+

A.3.a.i) 48.Kg3 Qh3#.

A.3.a.ii) 48.Kf3 Qg5+ (48... Qh3+ 49.Rg3 Qxf1+ 50.Kg4) 49.Rg4 Rh3+ 50.Kf2 (50.Kg2 Qxg4+ wins) 50... Rxe3 wins decisive material (51.Kxe3 Qxg4).

A.3.a.iii) 48.Kg1 Rh1+ 49.Kf2 (49.Kg2 Qh2+ 50.Kf3 Rxf1+ wins) 49... Qc2+

A.3.a.iii.1) 50.Ke1 Qb1+ 51.Kd2 (else 51... Qxf1+ and 52... Kxg7) 51... Qxf1 52.Qg3 Qd1+ 53.Ke3 Qd3+ 54.Kf2 Rf1+ 55.Kg2 Qe2+ 56.Kh3 Rh1+ wins.

A.3.a.iii.2) 50.Kf3 Rxf1+ 51.Kg4 (51.Kg3 Kxg7 wins decisive material) 51... Qg2+ 52.Qg3 Qxg3+ 53.Kxg3 Kxg7 wins decisive material.

A.3.a.iii.3) 50.Kg3 Rxf1 should be winning. For example, 51.Qxa7 Qd3+ 52.Kh2 (52.Kg4 Qg2+ and mate next; 52.Kh4 Rh1+ and mate in two) 52... Qe2+ 53.Rg2 Qh5+ 54.Kg3 Rf3#.

A.3.b) 46.Rh1 Qc2+ 47.Kg1 (47.Kf1 g2+ wins) 47... g2 48.Rh2 Qd1+ wins.

B) 44.a5 hxg2 45.Kxg2 Rh5

B.1) 46.Rh1 Rxh1 47.Kxh1 Qh5+ 48.Kg1(2) Qh2+ 49.Kf1 g2+ wins.

B.2) 46.Rxg3 Qc2+

B.2.a) 47.Kf3 Rxg3+ 48.Kxg3 Qh2+ 49.Kg4 (49.Kf3 Rh3+ wins) 49... Rh4+ 50.Kg5 Rh7 looks winning (51.f5 Qh6+; 51.Rg1 Qh5+ 52.Kf6 Qf5#).

B.2.b) 47.Rf2 Qb1 48.Rf1 (48.Rxg7 Qh1+ 49.Kg3 Qh3#) 48... Qh7 looks winning (49.Rxg7 Rh2+ is similar to A.3).

B.2.c) 47.Qf2 Rxg3+ 48.Kxg3 Qg6+ 49.Kf3 Rh3+ 50.Ke2 Qd3+ 51.Ke1 Re3+ wins decisive material.

B.2.d) 47.Kg1 Qh2#.

B.3) 46.b6 Rh2+ 47.Kg1 Qc2 48.Rxg3 Rg2+ 49.Kh1 (49.Rxg2 Qxg2#) 49... Rh7+ 50.Rh3 Rh2+ and mate next.

May-14-22
Premium Chessgames Member
  chrisowen: Sherpa cloud I h3 feels likely on vibrant acrid muddle cooler choice Qh7 gungho cub Qc2 v i clubhouse blues eg h3 aka;
May-14-22
Premium Chessgames Member
  Jimfromprovidence: There is another benefit of 44...Qh7 besides seeing ...Qc2+. If 44...Qh6 instead, after 45 Kg2 Rh5, white is winning after 46 f5.


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