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Karl Robatsch vs Vlastimil Jansa
Chigorin Memorial (1974), Sochi URS, Sep-??
English Opening: Anglo-Dutch Defense (A10)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 4 OF 4 ·  Later Kibitzing>
Dec-28-09  cyclon: <dzechiel:Strictly speaking, this isn't a composed chess problem, such as a mate-in-3, which must have exactly one key move or be cooked.

This is a position from an actual game, and may have multiple moves that win, and some of those moves may produce the same win. That doesn't introduce a flaw, it just shows that there are sometimes many ways to win from a given position.> EXACTLY SO. Well said. These are "Puzzles" FROM the ACTUAL GAMES, NOT `Composed Problems`.

Dec-28-09
Premium Chessgames Member
  DarthStapler: It took longer than usual for a Monday but I got it
Dec-28-09  arnaud1959: "Very Easy" only because I already know this position.
Dec-28-09  YouRang: I found 12.Qd2 right away, noticing that my queen is not only perfectly safe due to the absolute pin on black's DSB, but that my queen double-pins that bishop against the queen, and there's no saving it.

If I were playing, I probably would have answered 12...Qxd5 with 13.Qxd5 cxd5 14.Bxd5+, since I like to simplify when ahead, and taking off the queens is a great simplification.

Dec-28-09
Premium Chessgames Member
  Domdaniel: I remember this game, and the winning move Qd2, from magazines at the time. It was my first time seeing this idea, and it left an impression.
Dec-28-09  gofer: 12 Qd2

and black resigns as the pin along the a1-h8 diagonal is crushing when combined with the pin on the a5-e1 diagonal!!!

Time to check...

Dec-28-09  Utopian2020: I instantly saw the answer to this puzzle. I would like to know what was going through Jansa's mind starting with 9...Qa5. There are probably multiple lessons to learned or relearned here. One being when a GM appears to be offering a piece, think thrice before taking it.
Dec-28-09
Premium Chessgames Member
  fm avari viraf: I think, this is the second time, the puzzle has been repeated hence my answer remains the same.
Dec-28-09  cyclon: <YouRang:If I were playing, I probably would have answered 12...Qxd5 with 13.Qxd5 cxd5 14.Bxd5+> Please NOTE 3. things; 1.That 14.Bxd5+ is IMPOSSIBLE move, because N is still in f3 in THIS phase. 2. Even if it weren`t, it`s NOT a check, because Black King is in h8. 3.White does NOT play (after 12. -Qxd5) 13.Qxd5?, but 13.Qxc3+ instead, when -Rf6 (e5 transposes into a game) is the only move ( -Kg8? 14.Qg7X). Then comes 14.Qe3 which threatens to stay a whole rook up next move by 15.Bxf6+. To avoid this, Black must play 14. -e5, when White plays 15.Nxe5 threatening NOW Queen by Bg2. When BQueen moves off (your choice), White plays 16.Nd3 winning a WHOLE Rook. In the same way, if I`m mistaken, please correct me. Anyway, I only OCCASIONALLY take up for consideration other `enthusiastics` comments, it`s NOT my "hobby" to prove others flaws.
Dec-28-09
Premium Chessgames Member
  patzer2: It would appear 10...Nxd5? falls into an opening trap, sprung by 12. Qd2!

By the way, the pin after 12. Qd2! puts both a relative pin and an absolute pin on the Black Bishop on c3. The absolute pin prevents 12...Bxd2 due to the Black Bishop's pin of the King. The relative pin punishes 12...Bxb2 with 13. QxQ.

Dec-28-09
Premium Chessgames Member
  patzer2: The final move 14. Nxe5! neatly combines the discovered attack and pin tactics. If 14...Qxe5, then simply 15. Qc2! or 15. Qc1! pins and wins the Black Queen.
Dec-28-09  Patriot: I saw Qd2 instantly but briefly considered Qd4+ and quickly tossed that out.

<cyclon>

I think <YouRang> only had a typo in his analysis. His idea was 12.Qd2 Qxd5 13.Qxd5 cxd5 and 14.Bxc3+. This is one way to simplify.

If black decides to take the bishop instead: 13...Bxc3 14.Qd1 Bxa1 15.Qxa1+ trades rook for queen and white is still way ahead.

Dec-28-09  YouRang: <Patriot><I think <YouRang> only had a typo in his analysis. His idea was 12.Qd2 Qxd5 13.Qxd5 cxd5 and 14.Bxc3+. This is one way to simplify.>

Yep, I was clicking along a bit too rapidly -- I meant 14.Bxc3+, as you say.

My apologies for sloppy typing this morning, and thanks for correctly deducing and reporting my intent. :-)

Dec-28-09  remolino: 12. Qd2 wins immediately, but it took me 2 minutes. Nice to see an interesting Monday puzzle with a new motif.
Dec-28-09  WhiteRook48: 12 Qd2! took me half a minute
Dec-28-09  zb2cr: Took over a minute to quit fooling around with trying to make things happen on d4. Then I saw the cross-pin.
Dec-28-09  BOSTER: <dzechiel> <in any case , the pin of the black bishop on the a1-h8 diagonal allows white to play 12.Qd2>. This is not correct. If black played 10...Ne4 you could not play 12.Qd2.
Dec-28-09
Premium Chessgames Member
  sethoflagos: Scratched my head for a while between the less constricting (intuitive?) 12. Qd2 and 12. Qe1. Both seem to accomplish the mundane feat of winning enough material to take the game but which gains those all important points for artistic merit? If the continuation is 12 ... Bxb2 then the lines reconverge with 13 Qxa5. However, black would surely prefer to lose his bishop than trade Q for R. The threat of 13 Bxc3+ pretty well limits black’s alternatives to a queen move or 13 ... Kg8. How about picking up a consolation pawn with 12 ... Qxd5? Reconvergence again with 13 Qxc3+ e5 14 Nxe5 Qxe5 15 Qd2 and the queen is lost anyway. 13 ... Rf3 keeps material loss temporarily to a rook, but still nothing tangible to distinguish between 12 Qd2 or e1. Similarly, Q moves to b5, c7, d8 will all tend to receive the reconvergent response 13 Qxc3+. However 12 Qd2 Qc5 13 Bxc3+ Kg8
14 Ng5 Re8
15 Ne6 Bxe6
16 Bd4 Qb5
17 Qh6 any
18 Qg7#
is so much sharper than
12 Qe1 Qc5
13 Qxc3+ Qxc3
14 Bxc3 Kg8
And from d2 the queen can threaten mate unaided
12 Qd2 Qb6
13 Qh6 Kg8
14 Ng5 Rf7
15 Bxc3 Qc5
16 Rfc1 Qb6
17 Nxf7 Kxf7
18 Qxh7+

Which just leaves 12 ... Kg8
12 Qd2 Kg8
13 Bxc3 Qxd5
14 Qh6 Rf7
15 Ng5 Qc5
16 Rc1 Nd7
17 Nxf7 Kxf7
18 Qxh7+
Devastating, whereas 12 Qe1 Kg8 13 Bxc3 Qxd1 is just a bishop for two pawns. Is 12 Qe1 wrong? I think if it was me playing Jansa, I suspect it would lose the game.

Dec-28-09  YouRang: <BOSTER: <dzechiel> <in any case , the pin of the black bishop on the a1-h8 diagonal allows white to play 12.Qd2>. This is not correct. If black played 10...Ne4 you could not play 12.Qd2.>

??

I think you misunderstood <dzechiel> there. He was referring to the puzzle position where white is about to play his 12th move.

He had speculated about how the game might have arrived at that position, but then he said "in any case...", which simply meant "by whatever means this position was arrived at...".

I'm sure he did NOT mean that you could go back and change an earlier move to arrive at a different position.

Dec-28-09  MaxxLange: Robatsch really opened up the can on this poor guy's Dutch. Best Monday puzzle in a long time!
Dec-28-09  Xiaohaha: This required more calculation than the usual Monday.
Dec-28-09  Knight101: For Black at 12... instead of Qxd5, I would sacrifice Qa5 to win a slight material advantage (2-rooks against queen and rook) with good propects; for example, 12...Bxb2 13.Qxa5 Bxa1 14.Rxa1 then start devoloping queenside piece.
Dec-28-09  MaxxLange: <Knight101> Black's just busted after that idea. His development is backward, his King is open, His QR is trapped and out of play, and White still has a Queen, which looks pretty well placed for crushing chances
Dec-28-09  SufferingBruin: 1000 rating, trying to get better.

Qd2, though it didn't hit me right away. I was looking for a mating attack and then I saw it.

Oct-15-15  The Kings Domain: Nice miniature.
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