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Bogdan Sliwa vs Wolfgang Uhlmann
Dresden it (1956), Dresden GDR, rd 3, Feb-??
King's Indian Defense: Saemisch Variation (E80)  ·  1-0


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sac: 25.Rxg6 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
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Jul-26-16  abuzic: Another mate: 28.Bg5+ Kxg5 29.Rg1+ Kf4 30.Qh2+ Ke3 31.Qe2+ Kd4 32.Nb5#
Premium Chessgames Member
  lost in space: got it
Jul-26-16  saturn2: My moves were 29 Rh5 Kf4(6) 30 Rf5 etc the king will be chased to death.
Jul-26-16  stst: B-sac:
28.Bg5+ KxB
29.Rg1+ (A) Kf6

30.Rg4+ Kxf3
31.Qh3+ Kf2
32.Qg2+ Ke3 (if Ke1, Qe2#)
33.Rg3+ Kd4
34.b3 Nf4
35.Qd2+ Nd3

29.Rg1+ can be changed to Rh5+ for similar variations.

Premium Chessgames Member
  Once: I opted for the scenic route:

28. Bg5+ Kxg5 29. Rh5+ Kf4 30. Qh6+

And white will surely round up the black king after a short king hunt. Don't ask me how. I am still eating my breakfast.

The game continuation is better.

Jul-26-16  Cheapo by the Dozen: I went with

28 Bg5+ Kxg5
29 Rh5+ Kf4
30 Rf5+ Ke3
31 Qh1 Nf4
32 Qe1+ Ne2+
33 Qxe2#

Jul-26-16  stacase: 28.Bg5+ sacs the Bishop and allows White's Queen and Rook to go on a rampage.
Premium Chessgames Member
  YouRang: Tuesday 28.?

click for larger view

Got it. At first, our (white) queen looks kind of trapped. We can exchange queens, but that goes nowhere.

It seems that we need to launch some sort of attack on black's king, but how? Our Nc3 and Rh1 are incapable. Our Q can't give check effectively.

However, our bishop can give check at g5. Sure black can (and in fact must) capture it, but to do so requires the king to move to g5. There, it becomes exposed to a rook attack.

So, we proceed <28.Bg5+ Kxg5 29.Rg1+>

click for larger view

Seeing this, I was quite sure that this was the right way. At a minimum, I can get a knight back for my bishop after the king moves, but more importantly, the king will wide open to attack from my queen and rook, not to mention some pawns, and mate will come quickly, e.g. <29...Kf4 30.Qh2+ Ke3 (...Kxf3 Qg3#) 31.Qe2+>

click for larger view

Whereever the king goes, the rook follows with mate:
- 31...Kd4 32.Rd1#
- 31...Kf4 32.Rg4#

Premium Chessgames Member
  gofer: You gotta be happy to play <25 Rxg6> and know that you have a mate in 6 more...
Jul-26-16  nisharaj31: Is 28Rh5 equally good??
Premium Chessgames Member
  agb2002: White has a bishop and two pawns for a rook and a knight.

Black threatens 28... Qxh7.

White can extract the black king with 28.Bg5+ Kxg5 29.Rg1+ Kf4 (29... Kf6 30.Q(R)xg6#) 30.Qh6+ Kxf3 (30... Qg5 31.Qxg5+ Kxf3 32.Qg3#) 31.Qh3+ Kf4 (31... Kf2 32.Rf1#) 32.Rg4#.


The alternative 29.Rh5+ is more involved but more interesting, 29... Kf4 (29... Kf6 30.Rf5#) 30.Qh6+:

A) 30... Kxf3 31.Rh3+

A.1) 31... Kg4 32.Qh5+ Kf4 33.Rf3#.

A.2) 31... Kf2 32.Qe3+ followed by 33.Qf3+ and 34.Rh1#.

A.3) 31... Kg2 32.Rh2+

A.3.a) 32... Kf(g)3 33.Qh3+ Kf4 34.Rf2+ Kg5 35.Rf5#.

A.3.b) 32... Kf1 33.Qh3+ Ke1 (33... Kg1 34.Qg2#) 34.Re2#.

A.3.c) 32... Kg1 33.Ne2+ Kf1 34.Qh3+ Ke1 35.Qg3+ Kf1 36.Qf2#.

B) 30... Kg3 31.Rh3+

B.1) 31... Kf2 32.Qd2+ Kg1 (32... Kf1 33.Rh1#) 33.Rg3+ Kf1 (33... Kh1 34.Qg2#) 34.Qe2#.

B.2) 31... Kg2 32.Rh2+

B.2.a) 32... Kf1 33.Qh3+ as in A.3.b.

B.2.b) 32... Kg1 33.Ne2+ as in A.3.c.

B.2.c) 32... Kxf3 33.Qh3+ as in A.3.a.

B.2.d) 32... Kg3 33.Qh3+ Kf4 34.Qg4+ Ke3 35.Rd2 and 36.Nd1#.

Jul-26-16  WorstPlayerEver: A fatal blunder would be 28. Rh5 I guess.

Juz tezting where things could go wrong...

Premium Chessgames Member
  morfishine: <28.Bg5+> followed by 29.Rg1+


Premium Chessgames Member
  Sally Simpson: Hi nisharaj31,

"Is 28Rh5 equally good??"

click for larger view

A wonderful idea but foiled by the Black Knight on d7 so Black can just take the White Queen. 28.Rh5 QxQ.

Let us put a Black Rook on d7 by changing the 2nd line of the fen from '/3nq2Q/' to '/3rq2Q/'

click for larger view

Now we see your imaginative idea working. 28. Rh5 QxQ 29.Rf5+ Ke7 30.Bg5 mate. Beautiful.

Alas in the game position Black in answer to 30.Bg5+ can play 30...Nf6.


Played over the game. I'm thinking that here. (White to play)

click for larger view

27.Bxe5+ (instead of 27.Bh6+) is an easier an quicker win. It's all forced and only moves.

27.Bxe5+ Kf8 28.Qh6+ Kg8 29.QxN+ mate next move.

I suppose it all comes down to your viewpoint of the term 'easier'.

Jul-26-16  zb2cr: Found this one quickly.
Jul-26-16  saturn2: <Sally Simpson> In your other variation cannot black play 28...Kf7 instead of Kg8? So it is not one and only.
Jul-26-16  Razgriz: Well surely it wasn't a Queen Sac. The knight couldn't go do anywhere relevant, pawns were still a long way away so it was a bishop sac. I was focused on bg7 at first but it quickly rebuffed. So I checked the other square.
Premium Chessgames Member
  whiteshark: <28.Bg5+ Kxg5 29.Rg1+> was (good) enough for me.
Premium Chessgames Member
  Sally Simpson: Hi Saturn,

click for larger view

27.Bxe5+ Kf8 28.Qh6+ Kf7 Qg7 mate.

Avoiding mate in one is an only move.


Premium Chessgames Member
  kevin86: White brings opposing king into the open, then sets up a mate .
Premium Chessgames Member
  Mrcomputer55: What about Rh5 black has nothing else to give up or Qxh7 and Rf5 mate or else Nh4 Rf5+ Nf5 and Qxf5#!

Isn't this more elegant?

Jul-26-16  Patriot: I went with 28.Bg5+ Kxg5 29.Rh5+ Kf4 (29...Kf6 30.Rf5#) 30.Rf5+ etc. which HAS to be winning.
Jul-26-16  Moszkowski012273: 27.Bxe5+... is a less fancy way to win.
Jul-26-16  drollere: i don't get 25. Rxg6 instead of 25. Bxf8, R(or Q)xf8, 26. Rxg6+ ...

anyway, this is a typical open board situation where mate follows if the K starts on the right square -- which is g5. the downside is that the K has low rank flight squares that are hard to close off.

28. Bg5+ Kxg5 (or loses Q)

now there is a p+, 2 Q+ and 2 R+. i chose:

29. Rh5+ Kf4 (or Kf6, Rf5#)
30. Rf5+ Kg3
31. Qxg6+ Kf2
32. Nd1+ Ke2
33. Qg2+ etc.

the line in the game was my alternate, which solves the flight problem:

29. Rh1+ Kf4 (or Kf6, Qxg6+)
30. Rg4+ Kxf3
31. Qh3+ etc.

but i enjoyed the squirmy alternative.

Premium Chessgames Member
  Sally Simpson: Hi Mrcomputer55,

click for larger view

Sadly 28.Rh5 does lead to a mate.

After 28...Qxh7 the square d7 is a newly created flight square for the Black King. 29.Rf5+ Kd7 30.Bg5+ Nf6. No mate.

See Sliwa vs Uhlmann, 1956 (kibitz #18)


Hi Moszkowski,

I too think 27...Bxe5+ is a less fancy way. But it looks easier, a much quicker mate and more natural than have the Bishop blocking the Rook file.

Just odd how White played it how he did. I do not think it was time trouble, Black resigned before being shown the mate, you don't do that if your opponent has a flag hovering.

But It was White's game, he finished it how he wanted to.

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