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Herbert Heinicke vs Karl Gilg
GER-ch 7th (1940), Bad Oeynhausen GER, rd 10, Aug-??
Queen's Indian Defense: Spassky System (E14)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Jun-16-22  mel gibson: Come on - this is a Monday puzzle.
Jun-16-22  nalinw: Yes ..... dis-orienting for those of us who use Chessgames instead of the calendar!
Jun-16-22  saturn2: 33.Kf1 and it is not trivial
Jun-16-22
Premium Chessgames Member
  agb2002: Black is one bishop down.

White is about to play Be4 and if Bxe3 then Qc8+ achieves perpetual at least.

The weak diagonal a8-h1 suggests 32... Rxg3+:

A) 33.hxg3 Qh1+ 34.Kf2 Qf3+ 35.Kg1 Qg2#.

B) 33.Kf2 Qxh2+ 34.Kf1 Rg1#.

C) 33.Kf1 Ba6

C.1) 34.Qxa6 Qxf4+ 35.Ke2 Rg2+ 36.Kd3 (36.Kd1 Qd2#) 36... Rd2+ 37.Kc3 Qd4+ 38.Kb3 Rxb2#.

C.2) 34.hxg3 Qh1+ 35.Ke2 (35.Kf2 Qh2+, followed by Bxc4, wins decisive material) 35... Bxc4+ wins decisive material.

Jun-16-22
Premium Chessgames Member
  devere: If 33.Kf1, there's also a nice finish with ...Qh3+ 34. Ke2 Ba6 35. Qxa6 Rg2+ 36. Kd1 Qb3+ and checkmate in 2 moves follows.
Jun-16-22  saturn2: <agb2002 33.Kf1 Ba6> 33...Qh3 is a computer move. Good to see also human analysis.
Jun-16-22  mel gibson: <
Jun-16-22 saturn2: 33.Kf1 and it is not trivial>

You are correct and I was wrong.
This is harder than a Monday puzzle.
There is no quick checkmate.

Stockfish 15 says:

32. .. Rxg3+

(32. .. Rxg3+ (♖h3xg3+ ♔g1-f1 ♕h6-h3+ ♔f1-e2 ♗b7-a6 h2xg3 ♗a6xc4+ ♔e2-f3 ♗c4-f1 ♗b2-c3 h7-h5 ♔f3-e4 ♗f1-g2+ ♔e4-d4 ♕h3xg3 ♗c3-d2 h5-h4 ♖e1-c1 ♕g3-f2+ ♔d4-d3 ♗g2-f1+ ♔d3-c3 h4-h3 ♗d2-e1 ♕f2xf4 ♔c3-b2 h3-h2 ♖c1-c8+ ♔g8-f7 ♖c8-c7+ ♔f7-e8 ♖c7-c8+ ♔e8-d7 ♖c8-h8 ♕f4-d4+ ♗e1-c3 ♕d4-f2+ ♔b2-b3 ♗f1-g2 ♗c3-b4 ♕f2-e3+ ♔b3-b2 ♕e3xe5+ ♗b4-c3 ♕e5-e2+ ♔b2-a1 ♕e2-e3 ♔a1-b2 ♗g2-h3 ♖h8xh3 ♕e3xh3 ♗b1-e4 h2-h1♕ ♗e4xh1 ♕h3xh1 a3-a4 ♔d7-e7 ♗c3-e5 ♔e7-f7 ♗e5-b8 ♕h1-e4 ♔b2-b3 ♔f7-g8 ♗b8-c7 ♕e4-b1+ ♔b3-c3 ♕b1-c1+ ♔c3-b4 ♕c1xc7) +16.06/38 1625)

score for Black +16.06 depth 38.

Jun-16-22  Brenin: White's response 33 Kf1, leading to 33 ... Qh3+ 34 Ke2 and the less than obvious 34 ... Ba6, raises this POTD from Monday to mid-week standard. After 35 hxg3 Bxc4+ 36 Kf3 Black, with Q+P for R+B, still has some work to do, e.g. 36 ... Bf1 followed by Qg2+, Qxg3 and advance of the h-pawn.
Jun-16-22  Autoreparaturwerkbau: Puzzle worthy of Thursday. Black to play.


click for larger view

The first few moves are relatively straight-forward. 32...♖xg3+ 33. ♔f1 ♕h3+ 34. ♔e2 that leads us to classic crossroad situation, how to proceed with fierce attack. True puzzle starts here, black to play:


click for larger view

Black is obviously tightening his grip, but how to continue here? ♖g2+? ♖b3? ♖e3+? ♕xh2+? ♕g2+? Rather surprisingly, none of these moves work, they all end up in dead-end or even losing the game.

The real star move is 34...♗a6+!


click for larger view

Nothing works for white:
- taking pesky bishop 35.♕xa6 ends in mate-in-4 since black is now allowed the fatal check with queen on b3 with ♕b3+ (35... ♖g2+ 36.♔d1 ♕b3+ 37.♔c1 ♕xb2+ 38.♔d1 ♕xb1#)

- all other sane moves (hxg3, ♔d1, ♔d2) loses queen (hxg3 also with check) and after some further capitulating of kingside pieces eventually promotes the h-pawn

- any other moves (like ♗e4, ♗xh7+) are mate-in-10 at best

Well, well, well... <34...♗a6+>, what a CRACKER!

Jun-16-22  Cheapo by the Dozen: The natural move is 32 ... Rxh2, which seems to recover a piece while probably leaving Black a pawn up.

But 32 ... Rxg3+ is easily shown to be at least somewhat better, once one checks that the rook is actually poisoned. Lines with ... Qxh2 seem to grab an extra pawn, while lines with ... Qh3+ seem to grab an extra tempo instead. And either approach seems to leave Black with a stronger attack than the base-case move.

And none of the above approaches seem to leave White with a counterattack that's fast enough to reverse fortunes.

That's really as far as I took the analysis before checking. :)

Jun-16-22
Premium Chessgames Member
  ClassZPlaya: 25. ... Nxe5! is also a gem
Jun-16-22  Cheapo by the Dozen: Well, actually, maybe what I wrote isn't wholly accurate. Giving up the queen's defense of e6 is dangerous and, as per the comment right above mine, may really require Black to find the best line, namely ... Ba6.
Jun-16-22
Premium Chessgames Member
  chrisowen: Prowls timer mucked a Rxg3+ arrive etcetera garcon x finish affable v puffy create i v difficult Rxg3+ fatwa?
Jun-16-22
Premium Chessgames Member
  devere: <saturn2: <agb2002 33.Kf1 Ba6> 33...Qh3 is a computer move. Good to see also human analysis.>

Actually 33...Qh3+ is the first move most talented human chess players would look at. My condolences if you are lacking the talent to see it.

Jun-16-22  Cellist: Got it fairly quickly. I also saw 34. ... Ba6 in case White declines the sacrifice and moves the K.
Jun-16-22  johnnydeep: This was a medium puzzle? Took me - an unrated patzer - all of 10 seconds. EDIT: ah, ok, if white declines to take the rook with the pawn, black's victory is not so immediate.
Jun-16-22  MrKing43: If white declines the rook sacrifice on g3, and moves the king to f1, why not Qxh2 instead of Qh3 check
Jun-16-22  AlicesKnight: Saw Rxg3+ almost at once; its effect is quick or slow but sure depending on response.
Jun-16-22  saturn2: <devere Actually 33...Qh3+ is the first move most talented human chess players would look at>

It is a check at which also patzers look at. So no need for talent. However to make it work you have to see in advance 34.. Ba6 and the tricky follow ups.

So if one has the Ba6 idea it is more human to play it at move 33 so to make 34...Qf4+ possible.

Jun-16-22  Brenin: <MrKing43>: After 32 ... Rxg3+ 33 Kf1 Qxh2 White wins with 33 Qxe6+: he keeps checking with the Q, picks up the B with Qb8+ and Qxb7+, and then plays Bd4 to prevent Black from mating him. To avoid this, Black has to keep checking, or pin the Q with Ba6.
Jun-16-22
Premium Chessgames Member
  raymondhow: < ah, ok, if white declines to take the rook with the pawn, black's victory is not so immediate. > And that's an issue in general with puzzles. Since White does not put up the best resistance, we are really solving a simpler puzzle. I like to think I would have solved if White had played 33 Kf1, but hadn't yet seen that through.
Jun-16-22  TheaN: <devere: <saturn2: <agb2002 33.Kf1 Ba6> 33...Qh3 is a computer move. Good to see also human analysis.>

Actually 33...Qh3+ is the first move most talented human chess players would look at. My condolences if you are lacking the talent to see it.>

Now now. Whilst I do disagree with saturn, Qh3+ is indeed the most logical followup, no need to state it like this.

Jun-17-22
Premium Chessgames Member
  perfidious: <davoid> has issued his electronic fatwa on the position; there is, therefore, no need to tarry over things for we mere mortals.
Jun-17-22  MrKing43: Thank you Brenin. I did not look closely enough at the position.
Jun-17-22
Premium Chessgames Member
  agb2002: <saturn2: <agb2002 33.Kf1 Ba6> 33...Qh3 is a computer move. Good to see also human analysis.>

33... Ba6 looked easier to me.

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