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Viktor Kupreichik vs Vitaly Tseshkovsky
Minsk (1982), Minsk URS, rd 15, May-??
Sicilian Defense: Paulsen. Normal Variation (B45)  ·  0-1



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sac: 26...Bxb2 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Sep-26-12  JohnBoy: <Tired Tim: This doesn't quite fit as a puzzle 26...Bxb2 was the difficult move> - a lot of the puzzles posted here are like that. The groundwork was already laid. The issue here is whether or not black has enough to continue, or ought to take the perp.

My thinking was along the lines of <FSR>. First make sure that a draw is in hand. Then, can Q+R secure the full point? I decided that the white king was too exposed, after ...Qd3+ and ...Qxd5+, to pass up ...Re3. I didn't see a mate, but was convinced that white had no way to give up the knight for a perp of his own.

Sep-26-12  King Sacrificer: Good to see a fresh puzzle. It's out of the regular "Queen sac on Monday, rook sac in mid-week, pawn push at the weekend" logic.
Premium Chessgames Member
  gawain: A nice puzzle. 27...Qd3+ seemed like the natural first move but I missed the follow-up. I was looking only at 28...Qc4+
Premium Chessgames Member
  gawain: There is a plausible line after 25 Qg1 (rather than 25 Rxe8+) that leads to this remarkable mating position.

click for larger view

I will show the whole line if anyone is interested

Premium Chessgames Member
  chrisowen: Fangs a very much in rolling high it rookh2 he free then e3 too

horrific blundred in whites camp is king safe not a chance in

stripped rook (bare bones) queend3+ king aid of the party fable a

kinga2 bang rookc2 on i kit a hammering ar g3 oil the rampart re2

serves up hope rest ROI Ka1 literally forced pawn doily it lacer in

d3xd5 a rudder to guidehome 29.Kb1 stiffer qd3+ resistance rooke3

provides the pedestal in defend at see queen and rook cant shinbone

over a3 too f2 so you sketch ok in setter d3xd5 thunder and ash Ka1

smoker ala re3 from e8 pipe up ride a ok i reckon in gen decision

blacks queen does the damage it her in d3+ glib in python in a2 ore,

Mind you rc2 drips and cues right rookb2 in feed him re2 win queen

g3 to boot end queen down easy mop up job a3 g4 h4 ar good king a2

by timed ...d5+ stints over in Ka1 re3 now everything falls to a3 d3

f3 light it a lyth in collect clap rookh2 e3 game for ait brush in!

Ka2 lieu ah milk it how in too slander your rook away.

Premium Chessgames Member
  doubledrooks: I overlooked that after 27...Qd3+ 28. Ka2 that 28..Qxd5+ was the best way to go.
Sep-26-12  kaingero: <LIFE Master AJ: A GM - many years ago - told me analysis was a lot like digging a hole. You never know what you will find, but you keep on going deeper and tossing dirt ... until you uncover something.>

.....finding yourself in the hole and could not get out?

Premium Chessgames Member
  kevin86: I missed this one;I was looking for a perpetual.
Sep-26-12  Tiggler: After 27... Qd3+, 28. Kh2, I played 28... Re3 instead of 29... Re3. I think it is equally good. If 28. Kh1 Re1+ 29. Kh2 Re3. If 28. Rc2 Re3. If 28. Kc1 Re1+ wins Q for R.

I checked 27... Qf1+ too, but decided it was less effective, though I think it transposes.

So now I'll look to see what others say.

Sep-26-12  Tiggler: Typos in my solution: substitute <a> for <h> . I've made that mistake before: sorry, I'll try to be more careful.
Sep-26-12  Tiggler: So my post should have read:

After 27... Qd3+, 28. Ka2, I played 28... Re3 instead of 29... Re3. I taink it is equally good. If 28. Ka1 Re1+ 29. Ka2 Re3. If 28. Rc2 Re3. If 28. Kc1 Re1+ wins Q for R. I caecked 27... Qf1+ too, but decided it was less effective, taough I taink it transposes.

So now I'll look to see what otaers say.

Sep-26-12  Tiggler: <Abdel Irada: <LMAJ>: I think that's a good metaphor, although I'd refine it a bit and compare it to an archaeological dig.>

In either case, unless one uncovers forced mate, there is always the question of whether to dig deeper. Until the clock forces a decision.

Sep-26-12  Tiggler: <Gryz: I saw Qd3 and Re3. But I don't think that's enough. I missed Qxd5+. I think that move is crucial.>

Now I see <Gryz>'s explanation, I think he is right, because 28. ...Re3 29. Qxd6 also protects the white a-pawn. So 28. ...Qxd5 is necessary.

Premium Chessgames Member
  LIFE Master AJ:

This is my web page on this game, I actually got it posted on the same day as the POTD ...

Sep-26-12  captainandrewwiggins: A Vitaly needed Viktor-y!
Sep-26-12  Dr. J: There appear to be several ways to win, and I really don't see much difference between them, but for what it's worth, playing against Crafty EGT I find the easiest win is not the game continuation, but rather 27...Qd3+ 28 Ka2 Qxd5+ 29 Kb1 Qd3+(!) 30 Kb1 Re3. Your mileage may vary.
Sep-26-12  Blunderdome: Qf1+ also wins, although I was wrong about why.

27...Qf1+ 28. Ka2 Re3? 29. Nd2! and white is slightly better according to our machine overlords. Any other 29th for white loses (I looked at Qxd6, Rb1, Rf2, Qf2).

But with 27...Qf1+ 28. Ka2 Qc4+ 29. Ka1(29. Kb1 Qd3+) Re3 black will win.

Sep-26-12  David2009: Playing through the game I reached

click for larger view

which is the position just after Black plays 20...Bxc3!. I think White has to accept the sacrifice wih 21.bxc3: I was expecting 21...Nxd5 when 22.Bh7+ gives White a breathing space.

Setting the diagram position up on Crafty End Game Trainer, the robot plays instead 21...Nxa2! and then, unfortunately, froze up before3 I could explore further.

Here's a link to play the position out when the EGT become3s available again:

Sep-26-12  Casseb: <gofer> 28...Re1+??
Sep-26-12  TheBish: Kupreichik vs Tseshkovsky, 1982

Black to play (27...?) "Medium/Easy", Black is down a knight for two pawns.

Black can take advantage of the awkward placement of White's pieces, particularly the knight and queen.

27...Qf1+ 28. Ka2

Or 28. Kc2 Re2+ 29. Kc3 Re3+ followed by 30...Rxf3.

28...Re3 29. Rf2

Or 29. Rb3 Qe2+ 30. Rb2 Qxf3.

29...Qc4+ 30. Kb2 Rb3+ 31. Ka1

Or 31. Ka2 Rxf3+, winning the queen.

31...Qc1+ 32. Ka2 Qb1#.

White can probably improve (last longer) with 30. Kb1, but Black has a winning attack wtih 30...Qd3+ followed by 31...Qxa3+.


It looks like there's more than one way to "skin a cat", to use the old (terrible) cliche.

Sep-26-12  CHESSTTCAMPS: Black is down two pawns for a knight, but with the knight screening the queen from defense of the exposed king, the rook is an over-matched defender. In response to the threat of 28.Rxb5, black has two queen checks available.

27... Qd3+! is much the stronger of the two, pinning the knight, forking loose pawns, and restricting black's defensive options. There is no satisfactory response:

A) 28.Kc1?? Rc8+ 29.Rc2 Qxc2#

B) 28.Rc2? Re2 29.Ne1 (Nd4 Qxg3 30.Rxe2 Qd3+ wins the knight) Qxg3 30.Rxe2 Qxg4 leaves an easy endgame (Q+3P versus R+N+exposed WK) for black.

C) 28.Ka1 Qxa3+ 29.Kb1 (Ra2 Qc1#) Qd3+ 30.Ka2 Qxd5+ 31.Ka1/b1 (Rb3 Re3 wins) Re3 32.Rf2 Qd1+ 33.Ka2 Rb3! 34.Rb2 (otherwise 34... Qb1#) Rxf3 wins.

C.1) 30.Ka1 Qd1+! 31.Ka2 (Rb1 Qa5+ 32.Kb2 Re2+ forces mate) Qxd5+ followed by Re3 wins as in C main line.

D) 28.Ka2 Qxd5+ (Re3 29.Qxd6 with counter-play) 29.Ka1/b1 Re3 is similar to C.

Time for review....

Sep-26-12  LoveThatJoker: <27...Qd3+! 28. Ka2>

[28. Ka1 Qxa3+ 29. Kb1 (29. Ra2?? Qc1#) 29...Re3 ; 28. Rc2 Re2 29. Ne1/Nd4 Qxg3 ; 28. Kc1? Rc8+ 29. Rc2 Qxc2#]

<28...Qxd5+ 29. Ka1>

[29. Rb3? Re2+ 30. Nd2 (30. Ka1 Qxb3 ; 30. Kb1 Qd1#) 30...Qxd2+! mating; 29. Kb1 Re3 30. Rf2 (Trying to protect the N: Black wins at least on material if it falls) 30...Qd1+ mating]

<29...Re3 30. Rf2>

Trying to protect the N: Black wins at least on material if it falls

<30...Qd1+> Mating


Premium Chessgames Member
  numbersguy70: Fascinating game. Fritz, at Depth=28 (yes, I let it run a few days), has 20...Rxc3 being superior to the 20...Bxc3 played.

I feel one of my greatest shortcomings as a player is the inability to see a bishop that is stronger than a rook. Here the dark squares in the king's vicinity are crucial and without easy rescue by White.

Premium Chessgames Member
  LIFE Master AJ: Any comments on my web page?
Sep-03-13  JoergWalter: <LIE Master AJ: Any comments on my web page?> I'll actually stuff some dollars in an envelope if you stop it. <Thanks, and have a great day>
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