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Boris Katalymov vs Oleg Kaminsky
Sochi (Russia) (1969)
Scotch Game: Scotch Gambit. Advance Variation (C45)  ·  1-0
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
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Jun-14-08
Premium Chessgames Member
  dzechiel: White to move (28?). Black is up a rook and a pawn. "Very Difficult."

White is down serious material. He can recoup some of the material right away with 28 e8=Q+ Rxe8 29 Rxe8+ Rxe8 30 Qxe8+ Kh7, but this still leaves white down by two pawns and his back rank is dangerously weak.

I think white has to try for more, and the most immediate threat I see is

28 Be5

Not only does this threaten 29 Qxg7#, the bishop blocks the black queen's access to the king side of the board, and it also gives our king some "luft" in the future by clearing the h2 square.

I think black must play

28...Rg8

This stops the immediate mate. But I think white needs to turn up the pressure. How about

29 Qg6

Now the threat is 30 Qxh6#. Black seems to have but one defensive move...

29...Qc6

It's time to win back some material and exchange down.

30 Bxg7+ Rxg7 31 e8=Q+ Rxe8 32 Rxe8+ Qxe8 33 Qxe8+

Now black has a choice. Move the king or interpose with the rook. I think black should try

33...Rg8

because after 33...Kh7 34 Qe4+ picks up the knight.

34 Qe5+ Rg7

Once again 34...Kh7 35 Qe4+ wins the knight.

This seems correct so far. If we can move the b4-knight, then the bishop can be brought into the game.

I'm gonna take a look now and see what was actually played. I think this is the correct line, but black may have other defensive moves I haven't looked at.

Jun-14-08
Premium Chessgames Member
  dzechiel: Close, but I gave up too early! The whole line seems to be forced. I wonder if black could have given up the queen for the bishop early on and tried to push his own pawn. Probably not.
Jun-14-08
Premium Chessgames Member
  al wazir: I got the first five moves. At that point white has only material equality, but with an active ♕ and black's weak ♙s, I think it's enough to win. I probably would have played 35. Qd4, winning the ♙ on d3.

After 35...N6d5, white also has 36. Qxh6+ Kg8 37. a3, and black must lose a ♘ after 37. Qe6+

Jun-14-08
Premium Chessgames Member
  lost in space: 28. Be5 Rg8 (only move) 29. Qc6 (threat: Qxh6#) and then there are two options for Black:

a: 29... Qxe5 30. Rxe5 Rge8 + -
b: 29... Qc6 30. Bxg7+ Rxg7 31. e8Q+ Rxe8 32. Rxe8+ Qxe8 33. Qxe8+

By far not very difficult. Lets see, what I have been overlooking

Jun-14-08  JohnBoy: Instead of 29.Qg6, does not 29.e8Q win as well?
Jun-14-08  SniperOnG7: <JohnBoy> That's what I think too.

My line of thought goes:
28. Be5 Rg8
29. e8=Q Raxe8
30. Bxg7+ Rxg7 (if ...Kg7, then 31. Bf6)
31. Rxe8+ and White wins.

If
29...d2, then
30. Bxg7+ wins again.

Quite proud that I found this line...but obviously that's not the "correct answer". I reckon it's good enough though, no?

Jun-14-08  stacase: Yes, 28. Be5 threatening mate is usually an intelligent thing to do.
Jun-14-08  znprdx: Almost timed out on the obvious try 28. e8=Q+ but the h7 flight square is a problem

28.Qg6 Re1 29.Be5 Nice Tuesday puzzle However ...28.Qg5 busts it

Aha: that Bishop on b1 is doing nothing:28. a3 and Black can't play Qc1because of 29. Qf8+ but Kh7 again is the spoiler

I'm in trouble, so I'm going back to what I'd play OTB: 28. Be5 Rg8 and now 29.a3

Jun-14-08  derekchessgames: <JohnBoy>, <SniperOnG7>: 31. Rxe8+ is defended by 31...Kh7. 29.Qg6 is necessary for decisive win.
Jun-14-08  james biwi: what about 28.Be5 Q*e5 29.RE5 Re8 when black is threatening to play d2. i think the solution is 28.a3 NC6 30.e8=Q+ RE8 31.Re8 RE8 32.Qe8+ Kh7 Bd3+ etc
Jun-14-08  SniperOnG7: <derekchessgames> lol can't believe I missed that thanks
Jun-14-08
Premium Chessgames Member
  johnlspouge: Saturday (Very Difficult): White to play and win.

Material: 2B for 2N+R. White can soon play e8=Q, supported by Re1 and Qf7, to regain his R. The Black Kh8 is isolated, and the Black K-side has a weak light-square complex accessible to Qf7. The advance of the Black Pd3 must consider the opening the b1-h7 diagonal for Bb1. The only inactive White piece is Bh2, but the mate-in-1 threat Be5 activates it easily. The move Be5 is desirable also, to create luft, because presently White is vulnerable to back-rank mates.

Candidates (28.): Be5

28.Be5 (threatening Qxg7#)

Black has 2 possible defenses.

(1) 28Qxe5 29.Rxe5

threatening

29.e8=Q+ Rxe8 30.Rxe8+ Rxe8 31.Qxe8+ Kh2

with all exchanges forced to avoid mate. Then, Qe8 easily stops Pd6 (or Pd7), and Black has nothing to play for. Black can try

29Rc1+ 30.Kh2 Rxb1 31.e8=Q+ Rxe8

[31Kh2 32.Qg6#]

32.Rxe8+ Kh2 33.Qf5+ g3 34.Qf7#

The only alternative on move 28 is therefore passive defense.

(2) 28...Rg8 29.Qg6

threatening 30.Qxg7#, 30.Qxh6#, and 29d2 30.Qh7#

Black cannot respond 29Qxe5, so defense of Ph6 is the only alternative.

29Qc6 30.e8=Q

The White Qe8 and Qg6 are now mutually protecting, on a rubber band. The Black Qc6 is burdened with protection of Ph6; the Black Rg8, with protection of Pg7. Black has one R to spare, however.

30Raxe8 31.Bxg7+ Rxg7 32.Rxe8+ Qxe8 33.Qxe8+ Rg1

Although White cannot force a Q-fork of Kh8 and Ng4, he has no trouble chopping Pd6. The resulting position with Q+B for R+2N+P is a technical win, eased by the exposed state of the Black Kh8.

Jun-14-08
Premium Chessgames Member
  Once: This puzzle needs depth of analysis. Finding the first move (or even the first few) is definitely not enough. Let's not forget that white starts the position a rook down, so just picking up a piece is not enough for equality, let alone a win.

It is not until 37.a3 - 9 moves into the combination - that white secures a material advantage. And all the time black has that monster pawn on d3. Swap off all the pieces (eg by 29. Bxg7+?) and this pawn gets ever more dangerous.

Me? I saw 28. Be5 but then failed to see the strength of 29. Qg6. My continuation was the wimpish 29. Ba1 when white has threats against both g7 and e8.

My new toy, Fritz 11, evaluates 29. Qg6 as +3.7, 29. Ba1 as = (0.00) and 29. Bxg7+ as -3.7.

<sniperon G7> Great name, BTW! Fritz 11 rates your line as -3.7 - a decisive advantage to black. You've thrown away your passed pawn and won the exchange. But as you started a rook down, this does not equalise. 31... Kh7 and white has little to show for his adventure.

My usual problem of not analysing in sufficient depth!

Jun-14-08  Yopo: If 28 Bc7?? d2 winning imediately
Jun-14-08
Premium Chessgames Member
  hedgeh0g: <dzechiel><I wonder if black could have given up the queen for the bishop early on and tried to push his own pawn. Probably not.>

An interesting thought, but after 28...Qxe5 29. Rxe5 d2??, White wins with 30. e8=Q+!

Jun-14-08
Premium Chessgames Member
  johnlspouge: <<Once> wrote: This puzzle needs depth of analysis. Finding the first move (or even the first few) is definitely not enough. [snip] It is not until 37.a3 - 9 moves into the combination - that white secures a material advantage.>

Hi, <Once>.

I agree that White does not have a clear-cut material advantage until 37.a3. In my estimation, however, analysis is not required to see that White has a win after 33.Qxe8+ (and I notice that, like me, <dzechiel> discontinued precise analysis then). The Pd3 is dead, the Black pieces are scattered, and Kh8 is exposed to forking checks - all part of the recipe for the White win as it occurred, convenient because forced, but strategically inevitable.

Don't get me wrong, however. I agree with the need for analyzing the puzzles beyond the next move :)

Jun-14-08  234: Friday puzzle <29. ...?> Jun-13-08 G Agzamov vs Tal, 1981
Jun-14-08
Premium Chessgames Member
  kevin86: A nice combination. Black was unable to guard everything at once,and his game collapsed.
Jun-14-08
Premium Chessgames Member
  Once: <johnlspouge> Totally agree. Life is much too short to analyse a clearly winning position. I think you can count this one solved as far as you are concerned.

It is my own feeble effort that I think fails today.

Jun-14-08
Premium Chessgames Member
  johnlspouge: Hi, <Once>.

Thanks for giving me credit today, which I appreciate after being bruised, like so many others, by my effort against Tal yesterday :<{

I left a message for you earlier, at Judit Polgar vs Anand, 1991. Be warned, the link reflects my whimsical sense of humour, but you might enjoy it nonetheless.

Jun-14-08
Premium Chessgames Member
  Once: <johnlspouge> I always need a sense of humour, especially when being humbled by both today's and yesterday's puzzles. Or being beaten over the board by a schoolboy three times this year ...

Enjoyed your link; now set as the wallpaper on my laptop.

Jun-14-08
Premium Chessgames Member
  DarthStapler: I didn't get it
Jun-14-08  jheiner: Saturday. White to play. Very Difficult.

Material: White is down a R and a P, but has the B pair against 2 N. White has a P on the 7th rank, while Black has one on the 6th rank. Black's K has little defense, and the g7 square is weak. Down so much material, White must look for mate threats, either ending in mate, winning a Q or both R's for compensation. The P on the 7th rank is going to be key.

Candidates: a3, e8=Q+, Qxg7+, Qf8+

28.a3 drives the N off the b4 square, likely Nc6, and could capture on d3, putting more pressure towards the Black K. There are problems with this move. Black can ignore it, for instance 28.a3 d2. Or ignore it completely. Even a full N at this stage won't even the material. The a3 pawn will fall after the N moves (Qxa3) and the "pressure" is not forcing. However, this is a subtle move and could be necessary preparation in order to bring the light-squared B to play later. Would really like to have that b1-h7 diagonal covered, because it would create a back-rank weakness for Black. Wishful thinking?

28.e8=Q+ or Qf8+ may also come into play later, but there is no good continuation, despite these being forcing moves.

28.Qxg7+ Kxg7 29.Be5+ easily blunted via Qxe5 30.Rxe5 and Black wins with superior material.

28.Be5 threatening Qxg7# is forcing and looks promising. The Be5 blocks the Black Q from defense on g5, however, it also interferes with the Re1 coming into play.

28.Be5 Rg8

Continuations:
29.Qxg7+ Rxg7
29.Bd4...
29.e8=Q Raxe8 30.Bxg7+ Rxg7 (31....Kh7 mate to follow) 31.Qxe8+ Rg8 29.Bxg7+ Rxg7 (29...Kh7 mate to follow) 30.e8=Q+ Rxe8 (both Qf8 and Rg8 lose Qxf8+ or Qxg8#) 31.Qxe8+ Rg8

The last two transpositions to the same position. One of them may be a blunder.

Having a hard time visualizing a winning continuation in this position. K is trapped at h8. Q is on e8 on light squares. R on g8 defending. The only check available is 32.Qe5+ QxQ 33.RxQ and now the material is R+B vs. R+N+N. If the Re1 moves, Black gets Qc1+.

The problems come when the Q goes to e8 and comes off dark squares. Can't we just bring the R in at e8? Why did I miss that?

28.Be5 Rg8 29.Bxg7+ Rxg7 30.e8=Q+ Rxe8 31.Rxe8+ Rg8 (31...Qf8 just drops the Q) 32.Qf6+ Kh7 33.Re7+ Qxe7 34.Qxe7+ and the material is Q+B vs. R+N+N. The Nb4 is hanging and will probably be forked.

Time to check.

29.Qg6 threatening Qxh6#. Didn't see that. I had the right idea, since this still ends the same as mine with Q+B versus R+N+N. What did I miss? Checking with Fritz...

31.Rxe8+ Kh7 Ouch. Sigh. No cookie for me.

The Qg6 is a lovely threat. In fact, that pattern/cluster of pieces on the K-side should become a learned pattern. The pinned g7 and Rg8 creating a claustrophobic situation for the Black K, and h6 hangs dangerously once the Q is on g6, keeping the opponents K from defense on h7. Going to have to drill that one.

Jun-14-08
Premium Chessgames Member
  johnlspouge: <<jheiner> wrote: [snip] The Qg6 is a lovely threat. In fact, that pattern/cluster of pieces on the K-side should become a learned pattern. [snip] >

I remembered the epaulette mate. To visualize the move Qg6, I took away Pg7 and Ph6 and imagined the Qf7 at h6, a semi-epaulette mate.

Jun-15-08  jheiner: <johnlspouge: semi-epaulette mate> I like that. Imagining the mating patterns extending off the edge of the board. Clever.

Of course there are some like the Arabian that usually only work in the corner, of course we've seen them working this week in the middle of the board.

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