[usbca_chess] Re: Skype Coaching Notes - 15 December 2019 - Caro-Kann Defence, Advanced Variation, Tal Variation, B12

From: "Chris Ross" <c.ross@xxxxxxxxxxxxxxxxxxx>
To: <usbca_chess@xxxxxxxxxxxxx>
Date: Sun, 5 Jan 2020 17:15:47 -0000

All,

Playing through this game, made me think of this excellent victory a few
days ago at the Hastings tournament.

Superb display by white, switching play from side to side, displaying
wonderful positional sense, combined by neat attacking probes.

Enjoy!

[Event "Hastings Masters"]

[Site "?"]

[Date "2019.12.29"]

[Round "2"]

[White "Sengupta, Deep"]

[Black "Merry, Alan B"]

[Result "1-0"]

[WhiteElo "2564"]

[BlackElo "2420"]

[PlyCount "175"]

[EventDate "2019.12.28"]

[EventRounds "9"]

[EventCountry "ENG"]

1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 c5 5. a3 Bxc3+ 6. bxc3 Qa5 7. Bd2 Qa4 8.
h4

Nc6 9. h5 h6 10. Qg4 Rh7 11. Qf4 c4 12. Kd1 Bd7 13. Qh4 f6 14. f4 O-O-O 15.
Nf3

Rf8 16. Be2 Nge7 17. Rf1 Kb8 18. Qh3 Ka8 19. Be3 Qa5 20. Kd2 Rhh8 21. Nh4
Rhg8

22. Bg4 fxe5 23. fxe5 Nd8 24. Rxf8 Rxf8 25. Be2 Qb6 26. Qg3 Rg8 27. Qe1 Be8
28.

g4 a6 29. Qb1 Qc7 30. Qb2 Nf7 31. Rf1 Qd8 32. Rb1 Bc6 33. Qb6 Qd7 34. Rf1
Nc8

35. Qb4 b6 36. Ng6 a5 37. Qb1 Nh8 38. g5 hxg5 39. Bxg5 Qe8 40. Nh4 Ka7 41.
Rf2

Nf7 42. Qg1 Nxg5 43. Qxg5 Ne7 44. Bg4 Bd7 45. Rf3 Ka6 46. Ng6 Nc6 47. Qf4
Nd8

48. Rf2 Bc8 49. Bh3 Bd7 50. Rf3 Bc8 51. Qh4 Nc6 52. Kc1 Bd7 53. Bf1 Bc8 54.
Be2

Bd7 55. Rf4 Bc8 56. Kd1 Bd7 57. Ke1 Bc8 58. Kf2 Bd7 59. Kg2 Kb5 60. Rf1 Bc8
61.

Bg4 Bd7 62. Kh3 Bc8 63. Qg5 Bd7 64. Kg3 Bc8 65. Qc1 Bd7 66. a4+ Ka6 67. Qa3
Nd8

68. Qd6 Bxa4 69. Ne7 Rh8 70. Ng6 Rg8 71. Ne7 Rh8 72. Rb1 Nc6 73. Qc7 Bb5 74.

Ng6 Rg8 75. Nf4 Nd8 76. Nxd5 Qc6 77. Qxc6 Bxc6 78. Nxb6 g6 79. h6 Rh8 80.
Nxc4

Rxh6 81. Bxe6 a4 82. d5 g5 83. Bc8+ Bb7 84. Bxb7+ Nxb7 85. e6 Rh4 86. e7 Re4

87. Rb6+ Ka7 88. Rxb7+ 1-0

From: braillechess@xxxxxxxxxxxxxxx [mailto:braillechess@xxxxxxxxxxxxxxx] ;
Sent: 04 January 2020 05:37
To: Braille Chess
Subject: B.C.A. Skype Coaching Notes - 15 December 2019 - Caro-Kann Defence,
Advanced Variation, Tal Variation, B12



Skype coaching session, 15 December 2019.

3 Forthcoming coaching sessions in January will be on Sundays: 12, 19, 26,
at 14:00 UTC, which is 14:00 GMT.
The game discussed (41 moves) is given below with annotations and without
annotations.

Re-structuring of the sessions now offers the option for guests to bring
their own games for group discussion.
Recordings of some previous coaching sessions can be found at:

http://www.open-aurec.com/Skype/PaulBenson/PaulBenson.htm ;

Paul Benson.

* * *

Annotated Game.

White: V. Okhotnik, 2449.
Black: V. Berezhnoi.
Date: 1981.
Result: 1-0 in 41 moves.
Opening: Caro-Kann Defence, Advanced Variation, Tal Variation, B12.

| Editorial.
We are told that the strongest defensive pawn formation to have in front of
a king has the pawns sitting on their original squares.
Fine, but does this not mean such strategy misses out on claiming space?
Perhaps there is a subtle balance to be struck between the opposing
thoughts?
If so, just how many pawns in front of the king should move, and how far?
||

1. e4 c6
2. d4 d5
3. e5 Bf5
4. h4

| The Tal Variation.
White claims some kingside space with ideas of annoying the black f5 bishop.

Such pawn advances are relatively safe when the centre is closed.
||

4. ... h6

| The more popular choice here for black is, 4. ... h5, preventing white
from gaining further space with a later, pawn h5, and fighting for control
of the g4 square.
Both h-pawn moves give black the h7 square for the f5 bishop to retreat if
desired.
Please note the disastrous, 4. ... e6 5. g4 Be4 6. f3 Bg6 7. h5, snares the
unwary, black is losing the g6 bishop.
Instead, 4. ... Qb6, is an off-beat worthy of study.
||

5. g4

| White continues with the kingside expansion.
This style of play appears to contradict advice on how openings should be
handled - Get pieces out with the minimum of pawn moves.
Experience over the last 100 years or so has however discovered that
exceptions to the good advice exist, and here is such an example.
The variation is named after Tal, surely a recommendation in itself?
So despite the apparent rule-breaking, this system is perfectly playable,
the only question on placing it in the repertoire is does it produce
middlegames which appeal to the end-user?
Black to play and decide on the future of the attacked f5 bishop.
||

5. ... Bd7

| Counter-intuitive, right?
Surely retreating with either, 5. ... Bg6, or, 5. ... Bh7, keeping up the
fight for the h7 - b1 diagonal makes more sense?
Not necessarily so.
Black is planning a transposition from the Caro-Kann Defence into a system
found in the French Defence, Advanced Variation.
But surely black here is losing a tempo as the transposition occurs?
Yes, but take a look at the white kingside.

White almost universally in the Advanced French system will castle kingside,
the space-claiming pawn moves will leave the white king feeling much less
comfortable over there.
||

6. h5

| White increases the grip on the black kingside while also ruling out the
possibility of black pushing, pawn h5, trying to break up the white kingside
clamp.
||

6. ... e6

| The beginning of the transformation to the French Defence.
||

7. f4

| A doubler.
Firstly, the kingside space-claiming continues.
Secondly, the e5 pawn, an important, "Cramping-Device", in a French Defence
is given extra support.
||

7. ... c5

| And surely this is another loss of tempo by black?
Yes, the d7 bishop has consumed 2 moves to get there, as has the black
c-pawn spent 2 tempi to arrive on c5.
Is this flying in the face of more good advice about not wasting tempi,
especially in the opening?
Not really.
The position is closed, white has played 7 pawn moves, there are no weak
points in the black position.
So despite 2 tempi having been lost along the way, this black position is
secure.
However if you ever find yourself in a King's Gambit Accepted it might be
advisable to make every tempo count.
Going 2 moves behind in such a system is asking for trouble, which should
quickly arrive.
||

8. c3

So, 8 white moves played and all by pawns.
Surely another of those good advice rules being broken?
Perhaps so, but amongst those who have achieved this precise position for
white are: Mikhail Tal, John Nunn, Michael Adams, David Navara, Fabiano
Caruana.
So those, "Unwritten Rules", can be broken, but take care to only break them
when there are Grand Masters giving you examples of when it can be done.
||

8. ... Nc6
9. Nf3

| Giving the central dark square pawn chain some necessary support, black
might have plans of ganging up on the d4 square.
||

9. ... Qb6

| The black queenside development plan is taking shape,
Who knows what development plans white has, there are still a couple of
pawns yet to move, or perhaps something else totally unexpected?
||

10. Kf2

| Arrrrrrrgggh!!
An, "Annotator's Nightmare", of a move.
So, just which of the, "Unwritten Rules", does this move break?
How about getting your pieces developed quickly combined with king safety
being of the highest priority?
So why can white play like this?
Simply because the position is closed and black has no way of blasting it
open to get at the white king.
It might please the purists to learn that the limited database reports that,
10. Rh2, is slightly more popular, white preferring to defend the b2 pawn,
permitting the c1 bishop to move with, Be3, strengthening the central dark
squares.
||

10. ... O-O-O

| Again following the French Defence strategy.
Less committal and similarly, "French", were, 10. ...Rc8, and, 10. ... f6.
White to play and find the, "Blindingly Obvious Move".
||

11. Kg3

| The white monarch leads the battlefield charge toward the enemy forces,
more like 1381 rather than 1981.
There is however some logic to getting out of the x-ray glare of the black
b6 queen while offering token support to the g4 pawn.
||

11. ... Nge7

| Looks logical, but perhaps a safety-first approach plan of, Kb8, with,
Rc8, might have worked well.
Instead for an aggressive approach there was, 11. ... f6, beginning to
undermine the white centre.
||

12. a3

| Another pawn move, but it is still part of the overall plan, white must
somehow get open lines on the queenside.
||

12. ... c4

| And it is for black to try and prevent queenside line-opening.
||

13. Nbd2

| Supporting the, pawn b3, challenge.
||

13. ... Na5

| Designed to prevent white, pawn b3.
||

14. Rb1

| White insists that, pawn b3, must be pushed and so keeps on preparing it.
An example of the immediate, pawn b3, is available.
U. Jahr (2215) - M. Schlaugat (2250), Bundesliga 1981-82, went:
14. b3 Nxb3 15. Nxb3 Ba4 16. Nfd2 Nc6 17. Rb1 cxb3 18. Bb2 Be7
19. Bd3 Kb8 20. Qe2 Rc8 21. Rhf1 Rhf8 22. Nf3 Na5 23. Nd2 Qc7
24. Rbd1 a6 25. Kh3 Bd7 26. Rc1 Qb6 27. c4 Nxc4 28. Nxc4 dxc4
29. Bxc4 a5 30. Rc3 a4 31. Rfc1 Bc6 32. Qd3 Rcd8 33. Rd1 Rd7
34. Rcc1 Rc8 35. Qe3 Qd8 36. Qe2 Qf8 37. Ra1 Bd5 38. Bb5 Rdc7
39. Rdc1 Rc2 40. Qd3 Rxb2 41. Bxa4 Rf2 42. Rf1 Bc4 43. Qxc4 0-1.
||

14. ... Nb3

| Black makes it impossible for white to achieve the aim by occupying the b3
square.
Fine, but as a window of opportunity is closed, another window of
opportunity opens.
Clue: Fischerism - "Tactics flow from a positionally superior game."
Fine, but here it is the black pieces who are awkwardly placed which gives
white a chance to gain an advantage.
||

15. Bxc4

| White finds a combination which exploits no less than 5 unfortunate
factors in the black position.
||

15. ... Nxd2

| The 1st unfortunate factor eliminates itself.
The black b3 knight runs out of protection when a white knight lands on c4.
Instead, 15. ... dxc4 16. Nxc4 Qc7 17. Qxb3, white has won a couple of
pawns.
Much worse for black is, 15. ... dxc4 16. Nxc4 Qb5 17. Nd6+ Kb8 18. Nxb5
Nxc1 19. Nd6 Na2 20. Qb3 Bc6 21. Qxa2, white will be winning the black queen
plus 2 pawns for a bishop.
Finally, 15. ... Nxc1 16. Qxc1, black is confronted with the same problem as
is to occur in game.
||

16. Nxd2

| White replaces a knight with another knight, the combination exploiting
unfortunate factors in the black position can continue.
||

16. ... dxc4

| Black had a difficult decision to make.
The alternative was to permit the white c4 bishop to retreat, simply
accepting the loss of the queenside-cramping c4 pawn.
||

17. Nxc4 Qc7

| The next unfortunate factor, the black queen on b6 being hit as a white
knight lands on c4, is revealed.
Instead, 17. ... Qb5 18. Nd6+, royally forks black, the black b5 queen is
dropping off.
Or less dramatic, 17. ... Qa6, and white will proceed in similar manner to
game, but the black queen will not be as active on a6 compared to the game
continuation.
||

18. Nd6+

| And now 2 unfortunate factors are simultaneously exposed.
The white knight lands on d6 with check, forcing the black king to move,
plus the black e7 knight blocks out the f8 bishop, which could have traded,
Bxd6, had the e7 knight been elsewhere.
||

18. ... Kb8
19. Nxf7

| The last unfortunate factor is found.
Black's rooks are in a knight fork, had black made the previously suggested
defensive shuffle, Kb8 - Rc8, the whole white combination would not have
caused so much hurt, and perhaps white might not have tried it at all.
||

19. ... Rg8
20. Nxd8 Qxd8

| Material imbalance reads: White loses 2 minor pieces for a black rook plus
3 pawns.
Also of consideration is the black d7 light square bishop, which once gets
an open diagonal into the white centre / kingside, will effectively be
unchallengeable.
Well, unchallengeable unless white reckons it must be eliminated by the
return of an exchange.
Not a happy trade, white would then be a piece down for whatever pawns the
combination has trawled.
||

21. c4

| Playing for some central control, those light squares are in need of a
little strengthening.
||

21. ... g6

| The start of the real fighting begins.
Black must create some weaknesses in the white position and then gang up on
them.
||

22. hxg6

| A quick glance reveals the only active white piece is the g3 king, hardly
a position from which to start controlling the game.
Furthermore, black is going to focus on the white centre / kingside,
especially the light squares.
Quite ironic considering the tactic which created the material deficit was
due to a strategic disaster on those light squares.
White here recognises that the white h5 pawn - black g6 pawn tension will
result in a trade at some point, and so chooses to offer black a choice of
recaptures, one never knows how an opponent might respond...
||

22. ... Bc6

| Aha, black throws in a zwischenzug, rough translation, an inbetween move.
Here black leaves the white g6 pawn alone and instead places an attack on
the white h1 rook, which of course will immediately jump out of the way,
right?

Instead either, 22. ... Rxg6, or, 22. ... Nxg6, were simple to play and easy
to understand.
White to play continues with the light square strategy.
||

23. d5

| White is willing to give something on the light squares, expecting to make
an important light square gain elsewhere.
||

23. ... exd5

| A deflection.
When a unit moves it gains control of some new squares and loses control of
previously-guarded squares.
So why is white so keen to give away a pawn when simple chess suggests
moving the attacked h1 rook?
||

24. f5

| All of a sudden white has 3 connected fairly-well advanced passed pawns,
with the bonus the doubled g-pawns give the lonely white king some extra
cover.
||

24. ... d4

| And now black has a passed pawn as well as some lovely light squares on
the h1 - a8 diagonal.
Note the greedy, 24. ... dxc4, is refuted by, 25. Qxd8+, black drops the
queen.
||

25. Rh5

| Giving some extra support to the white f5 pawn, fine, but was it in any
danger?
||

25. ... Be4

| A doubler.
Firstly, a tempo-gain attack is given to the white b1 rook.
Secondly, the black e4 bishop is pressuring the white f5 and g6 pawns, ideas
of a combination against the white kingside pawns could be in the air.
||

26. Ra1 Qb6

| A doubler.
Firstly, pressure is placed on the white b2 pawn, the c1 bishop is tied down
to a defence.
Secondly, sideways pressure is placed on the white g6 pawn.

A question arose during the coaching session, is there an immediate
combination available for black on the kingside with, 26. ... Nxg6, trying
to blast the white kingside apart?
The idea is, 26. ... Nxg6 27. fxg6 Bxg6 28. Rh4 Be7 29. Rxh6 Bf5.
White would have severe problems protecting the g4 pawn, black can take
immediately, when white might give up the queen for the black light square
bishop plus g-file rook.
Or white might choose to try and run the king queenside to escape the
liberated black forces, neither seem appealing.

Chess can be somewhat contradictory at times.
Consult any middlegame book and there will be a chapter on missed
opportunities, a player deciding to increase the pressure instead of hitting
out immediately, and the delay permitted a defence.
Then the next chapter gives examples of striking too soon, the advice being
more units are needed for the attack to succeed.
So what are we to do when confronted with a position which looks as if
something should be happening?
Build even more pressure on the perceived weak point, or take the chance
before it disappears?
There is no real answer to this conundrum.
Simply be aware of the building / striking concepts, analyse both, make a
decision, then go home and work out which was the better.
In this way slowly but surely your personal file of middlegame judgement
will increase, hard work but worth the effort in the long term.

White to play needs some queenside development, an active response is
required.
||

27. c5

| White offers a pawn to gain a much-needed development tempo.
Instead, 27. Bf4 Qxb2, would leave white with weaker queenside pawns than is
about to occur in game.
||

27. ... Qxc5

| A deflection, the white c1 bishop can now move without fear of the loss of
the b2 pawn.
White now also has a fully open c-file for a rook.
||

28. Bf4

| White prefers to keep the 3 central connected passed pawns.
Instead, 28. Bxh6 Bxh6 29. Rxh6 Qxe5+, effectively trades a dangerous white
e5 pawn for a non-contributing black h6 pawn, not to mention permitting the
black queen to enter the game.
||

28. ... Nc6

| Black takes the pressure off the white g6 pawn in order to increase the
pressure on the white e5 pawn.
||

29. Rc1 Qd5

| Black reinforces the grip on the light squares while keeping a
double-attack on the white e5 pawn.
||

30. e6+ Bd6

| Move 30 and black completes development, the white d1 queen has yet to
join in, and yet there has been a certain logic to the strategy of both
sides.
||

31. Qd2

| Another coaching contradiction emerges?
Remember that previous advice about having a single bishop and queen
placement?
That is, put the queen on the colour-complex of the missing bishop.
This must be a generalisation, there will be more instances where this
strategy is useful, but the advice is not universal.
Here white can do little about the light squares and so instead fights for
control of the dark squares.
||

31. ... Ne5

| Another black unit occupies the centre, white must find some active play
soon, but what?
||

32. f6

| White can only make progress by throwing in a quiet, "Confusion Bomb".
Every move you make in chess is a test of various skills.
Before this move all the white kingside pawns were safe, now there are 4
targets on display, tactical opportunities now available.
In return the white rook is x-raying the black queen through the black e5
knight.
There are also 3 connected passed pawns on the 6th rank, and no matter what
black does white will obtain a pawn on the 7th rank, though how long it
might last is another question.
||

32. ... Qxe6

| The potential analytical tree of options might have caused the, "Confusion
Bomb", to go off.
Perhaps confronted with 3 white, "Mini-Monsters", all seeking the 7th rank
black understandably reduces the odds.
Other candidates, 32. ... Rxg6, and, 32. ... Bxg6, must take into account
white pushing either passed pawn, or, capturing on e5 with either the h5
rook or the f4 bishop, plus a real randomiser in the shape of, Rc5, very
tricky to work through them all.

And do not forget to invert the move-orders to be certain a critical line is
not being overlooked.
Fritz and friends find this frivolous fun, but bio-organic brains make
mistakes or miss opportunities.

There is another idea, 32. ... Qb3+, to be crunched, some ideas go:
(A). If, 32. ... Qb3+ 33. Kh4 Nf3+ 34. Kh3 Nxd2+ 35. Kh2 Bxf4+ 36. Kg1 Qg3+
mate.
(B). Or if, 32. ... Qb3+ 33. Kh2 Nf3+ 34. Kh1 Nxd2+ 35. Kg1 Bxf4, white has
no sensible way to stop black, Qg3+ mate.
(C). Or if, 32. ... Qb3+ 33. Rc3 dxc3 34. Qxc3 Qxc3 35. bxc3, black has won
a rook but still has the problems of those 3 white, "Mini-Monsters", on
their 6th rank.

The black game move of, 32. ...Qxe6, removes a potentially dangerous
attacker while placing a double-attack on the white g4 pawn, how can such a
move be considered bad?
White to play continues with, "Confusion Bomb", strategy.
||

33. Rxe5

| All right, perhaps this is not exactly, "Confusion Bomb", strategy, but
instead what the position demands, anything else leaves black fine.
||

33. ... Bxe5

| Forced.
The material-imbalance has white a piece down for a pawn, so better make
that pawn count.
Instead, 33. ... Qxf6 34. Rxe4, white is a rook up.
||

34. f7

| The vulnerable white f-pawn saves itself with a tempo-gain attack on the
black g8 rook.
||

34. ... Rd8

| All very logical, black protects the d4 pawn.
Instead, 34. ... Rf8 35. Re1, and black has severe problems, some ideas run:

(A). If, 34. ... Rf8 35. Re1 Bxf4+ 36. Qxf4+ Ka8 37. Qxe4, protects the g6
pawn, black will not survive much longer.
(B). Or if, 34. ... Rf8 35. Re1 Bxg6 36. Rxe5 Qxf7 37. Re8+ mate, a
double-discovered check, the black king has no flight squares.
(C). Or if, 34. ... Rf8 35. Re1 Qxg6 36. Bxe5+ Ka8 37. Qxd4 Bc6 38. Bg7 Rxf7
39. Qd8+ mate.
(D). Or if, 34. ... Rf8 35. Re1 Qd5 36. Rxe4 Qxe4 37. Bxe5+ Qxe5+ 38. Qf4
Qxf4+ 39. Kxf4 (white is a rook down but the, "Mini-Monsters", will force a
promotion) Kc7 40. Ke4 Kd7 41. g7 Rxf7 42. g8=Q, white will snatch the black
d4 pawn, the ending of queen against rook with 3 pawns each is a win.
(E). Or if, 34. ... Rf8 35. Re1 Qd5 36. Rxe4 Qxe4 37. Bxe5+ Qxe5+ 38. Qf4
Qxf4+ 39. Kxf4 Kc7 40. Ke4 Kc6 41. Kxd4, and again the white g-pawn will
promote into a won ending.
White to play has been pulling rabbits out of the hat for several moves now,
no reason for there not being another hidden in there.
||

35. Qxd4

| A tactical tripler.
Firstly, the white queen threatens, Qxd8+, with mate on c8 next move.
Secondly, the white queen threatens, Qxe4, winning a piece.
Thirdly, the white queen threatens, Qxe5+, winning a piece.

Finally the winner of the mutual x-ray glaring of the 2 dark square bishops
is declared, white triumphs.
So the black e5 bishop cannot capture the white queen, but did not black
just play a rook to the d-file to protect the d4 pawn?
||

35. ... Bxf4+

| Forced.
Capturing the white queen only exposes the weak black back rank.
Instead, 35. ... Rxd4 36. f8=Q+, no black piece can safely interfere, as,
36. ... Qc8 37. Rxc8+ is mate.
||

36. Kxf4

| And the white king now creates a double-attack on the black e4 bishop, and
nothing about the weak black back rank has altered, the black d8 rook needs
to protect the f8 square against a white f-pawn promotion.
||

36. ... Qe7

| Black guards the d8 rook and places another guard on the f8 promotion
square.
However on e7 the black queen cannot capture the white g6 pawn, it seems now
that the smoke is clearing that white will be keeping both advanced kingside
pawns.
||
37. Qxe4 Qg5+

| Aren't, "Tactical Event Horizons", tricky beasts?
White has been landing a sequence of punches on black, but just as you
expect black to fall over, out comes a counter-punch.
The black queen skewers the white king and unprotected c1 rook.
Instead, 37. ... Qxe4+ 38. Kxe4 Rf8 39. g7 Rxf7 40. g8=Q+, mating.
||

38. Kf3 Ka8

| Black declines the white c1 rook, why?
Instead, 38. ... Qxc1 39. Qf4+, forces queens off, 39. ... Qxf4+ 40. Kxf4,
threatening, pawn g7 forcing a promotion, so, 40. ... Rf8, white needs a
little care here, 41. Ke5 Kc7 42. Ke6 Kd8 43. g7, white will emerge a queen
ahead.
So by shuffling the king to a8 black has escaped the potential royal fork of
white, Qf4.
White to play can demonstrate a weakness which has been plaguing black for
several moves has just been made worse.
||

39. Qe8

| A quadrupler.
Firstly, the promotion of, pawn f8, is supported.
Secondly, an x-ray protection has been given to a now-vulnerable square in
the black defences.
Thirdly, the black d8 rook is pinned to the a8 king.
Fourthly, the black g5 queen is now tied down to protecting the d8 rook.
Having waited for 31 moves to get into the action it appears that the white
queen now dominates the game.
||

39. ... Qf6+

| Black prevents the white threat of, pawn f8, with promotion, however there
is still another white tactic in need of neutralisation.
||

40. Kg3 Kb8

| When white advanced with, Qe8, an ex-ray support was given to the c8
square, consequently white threatened, Rc8+, forcing black to trade rooks
and white would mate with, Qxc8+.
So black shuffles the king back to b8, regaining sufficient control of the
c8 square to prevent that particular mate.
Instead, 40. ... a6, black will lose control of the f8 square, 41. Rc8+ Rxc8
42. Qxc8+ Ka7 43. f8=Q, white wins.
||

41. Re1
Black resigns, 1-0

| White has too many threats which cannot be countered, some ideas run:
(A). If, 41. ... Kc7 42. Qe5+ Qxe5+ 43. Rxe5 Kd7 44. g7, and, pawn g8=Q,
will follow.
(B). Or if, 41. ... Kc7 42. Qe5+ Qxe5+ 43. Rxe5 Rf8 44. Re8, the black rook
cannot move and dare not trade on e8 as white replies, fxe8=Q.
(C). Or if, 41. ... Kc8 42. Qxd8+ Kxd8 43. Re8+ Kd7 44. f8=Q, black will not
find a perpetual, the white material will soon prove decisive.
(D). Or if, 41. ... Kc8 42. Qxd8+ Qxd8 43. Re8 Kd7 44. Rxd8+ Kxd8 45. f8=Q+,
winning.
||

* * *

## Unannotated Game.

White: V. Okhotnik, 2449.
Black: V. Berezhnoi.
Date: 1981.
Result: 1-0 in 41 moves.
Opening: Caro-Kann Defence, Advanced Variation, Tal Variation, B12.

1. e4 c6
2. d4 d5
3. e5 Bf5
4. h4 h6
5. g4 Bd7
6. h5 e6
7. f4 c5
8. c3 Nc6
9. Nf3 Qb6
10. Kf2 O-O-O
11. Kg3 Nge7
12. a3 c4
13. Nbd2 Na5
14. Rb1 Nb3
15. Bxc4 Nxd2
16. Nxd2 dxc4
17. Nxc4 Qc7
18. Nd6+ Kb8
19. Nxf7 Rg8
20. Nxd8 Qxd8
21. c4 g6
22. hxg6 Bc6
23. d5 exd5
24. f5 d4
25. Rh5 Be4
26. Ra1 Qb6
27. c5 Qxc5
28. Bf4 Nc6
29. Rc1 Qd5
30. e6+ Bd6
31. Qd2 Ne5
32. f6 Qxe6
33. Rxe5 Bxe5
34. f7 Rd8
35. Qxd4 Bxf4+
36. Kxf4 Qe7
37. Qxe4 Qg5+
38. Kf3 Ka8
39. Qe8 Qf6+
40. Kg3 Kb8
41. Re1
Black resigns, 1-0

* * *

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[usbca_chess] Re: Skype Coaching Notes - 15 December 2019 - Caro-Kann Defence, Advanced Variation, Tal Variation, B12

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