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Main
Date: 01 Jul 2005 01:25:32
From: =?ISO-8859-1?Q?Claus-J=FCrgen_Heigl?=
Subject: Hydra - Adams game 4 analysis (long)
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Hello,
upon request here is an analysis of game 4 of the Hydra - Adams match.
Adams - Hydra game 4
1. e4 c5 2. Nc3 d6 3. Nge2 Nf6 4. g3
Adams plays some sort of chameleon Sicilian and here he transpose into a
standard d6-Sicilian with d4. Adams sets up for control of the center
white squares. That doesn't necessarily mean he has given up on
attacking the kingside that could still be had with a later f4.
4...g6
Hydra doesn't contest control of d5 with e6 and opts for a fianchetto
itself, avoiding any weakening of d6. Although it looks like d6 isn't
threatened at all, things could quickly change after d4 when the d-file
will open for White. e6 would also mean the king bishop will be
developed to e7 where it his rather passive compared to g7, where it
exerts some pressure on the white queenside. Whatever Adams does now,
most definitely Hydra wants to attack on the queenside, not in the center.
5. Bg2 Nc6 6. d4
Adams doesn't want to play the classical closed Sicilian after 6. d3
which could be followed up by a later f4 and attack in the f-file.
6...cxd4 7. Nxd4 Nxd4
If Black doesn't want to trade the knights he has to play 7...Bd7 else
White trades and gives his Bg2 a target. For example 7...Bg7? 8. Nxc6
Nxc6 9. e5! with advantage (Popovic - Kozul Sarajevo 1985, also Adams -
Dreev Linares 1997). Trading opens the c-file for Black and puts the
white queen on an uneasy spot.
8. Qxd4 Bg7 9. O-O O-O 10. a4
In the past Adams played 10. Qb4 against Short and Kramnik. Short
answered 10...a5 11. Qb3 Rb8 12. a4 and got severely under pressure.
Kramnik sacrificed temporarily a pawn and got Adams in a difficult
situation after 10...a5 11. Qb3 Be6 12. Nd5 a4! 13. Qxb7 Nxd5 14. exd5
Bf5 15. Bg5 Qb8! 16. Qxb8 Rfxb8 17. Bxe7 Rxb2 18. a3? (18. c4) Rxc2 19.
Rae1 Ra6 20. Be4 Bxe4 21. Rxe4 Bb2 22. Rfe1 Rc1 23. Rxc1 Bxc1 24. Bf6
Ra8 25. Rc4 Bxa3 26. Bd4 Bc5 27. Bxc5 dxc5 28. Rxc5 a3 29. Rc1 a2 0-1
10...Qa5
If 10...Be6 threatening Nd5 White often plays 11. Qb4 and and can hope
for advantage in the case of 11...Qc7 12. a5! The idea is a white pawn
advance on the queenside. Kindermann - Wirthensohn went 12...Nd7 13. Bd2
Rfe8 14. Rfc1 Ne5 15. Nd5 Qd7 16. Qa4 Rac8 17. Bc3 Bh3 18. Qxd7 Bxd7 19.
f4 Nc6 20. Bxg7 Kxg7 21. c3 Nb8 22. Kf2 Na6 23. b4 Nc7 24. c4 Nxd5 25.
exd5 1-0 (79)
But I think Black has an excellent chance for equality or even a slight
advantage if offering a pawn with 12...a5!? and now
a) 13. Qxb7!? Nd7 14. Qb5 (better not wait for 14...Bc4 15. Rd1 Nc5 and
the queen is gone; 14. Nd5 Rb8 15. Qa6 (on 16. Qc6 Nc5 (Black threatens
Rb7 and Bd7) 17. Qc7 Qxc7 18. Nxc7 Bxb2 Black has definitively an
advantage) 15...Nc5 16. Qe2 Bxb2 with advantage for Black because of the
weak a-pawn) 14...Bxc3 15. bxc3 Ne5 and the miserable white pawn
structure should be good for compensation.
b) 13. Qb5 Rc8 14. e5!? (It doesn't make much sense to take the pawn now
with an extra tempo for Black. The black threat is Bc4 and if 14. Rd1
Nd7 15. Bd2 Rc4! plan Rb4 White experiences some trouble) 14...Nd7 15.
exd6 (15. Qxb7 Bxe5 trading a central pawn for a wing pawn should be
really good for Black) 15...Bc4 16. dxe7 Qxe7 17. Bg5 Qe6 18. Qxb7 Bxf1
19. Rxf1 Bxc3 20. bxc3 Nb6 21. Ra1 Rxc3. Black plans to eliminate all
white pawns on the queenside. I'm not sure if the white bishops pair
makes up for the material disadvantage.
Leko still plays 10...Be6 11. Qb4 Qc7 but hasn't faced 12. a5 yet.
Anyway, Hydra's 10...Qa5 stopped the idea a5 cold.
11. Qd3
This is new territory. There is a game Short - Gulko that continued 11.
Bd2 Qh5 12. Qb4 Bh3 13. f3 a5 14. Qb5 Qxb5 15. Nxb5 Bxg2 16. Kxg2 Rfc8
17. c3. Short doubled the rooks on the d-file, secured the queenside
with b3 and c4 and broke the center with e5. All this without much
chance of counter play for Black. Obviously Adams has found an
improvement for Black. My guess would be the transfer of the black
knight to c6 where it aims for d4 or b4 attacking c2. For instance 11.
Bd2 Qh5 12. Qb4 Ng4 13. h3 Ne5 14. Nd5 Nc6 (not 14...Bxh3 15. Nf4) 15.
Qb3 (Qa3!?) e6 16. Nf4 Qc5.
Perhaps Adams plans to trade his queen on b5 just like Short. Hydra
prevents this.
11...Bd7 12. Nd5 Nxd5 13. Qxd5
Adams decides to test the endgame abilities of Hydra. After the queens
are traded, Adams runs into difficulties. Perhaps it was better to leave
the queens on board. 13. exd5 Rfb8 (plans b5) 14. Bd2 Qb6 15. Rfb1 Rc8
16. c3 or 16. Be3 looks quite equal.
Other lines: 13. exd5 Bf5 14. Qb3 Rab8 15. Bg5 Qc7 16. c3. White may
follow up with Qb4-h4 and/or doubling the rooks on the e-file. Black can
prevent Bg5 like in the game, for example 13. exd5 Bf6 14. Bd2 Qc7
(14...Qb6 15. a5 or 14...Qc5 15. b4 just gives White the opportunity to
push his pawns) 15. c3 with the plan b3, c4 and a5, b4, c5 (see the
Kindermann game) or if Black blocks with a5, going b3, c4, Be3, Rc1, c5.
13...Qxd5 14. exd5
This looks quite equal with both sides having a half open file to put
the rooks against a pawn. But as the game shows, Adams never manages to
get some pressure against e7 while his queenside will come under attack.
14...Bf6!
A great prophylactic move which is directed against Bg5. The bishop
defends e7 reliably while the same time attacking the queenside.
15. c3 a5 16. Re1 Rfb8
The c-pawn is well protected so Hydra shifts its focus to the base of
the pawn chain. Black wants to open the b-file to attack the b-pawn.
17. Bf1
Obviously this doesn't prevent b5 so the goal is to trade off an
attacker, following the golden rule of defense. At first I found this
move suspicious because also a defender of d5 is removed, a black rook
moves on a strong place with tempo and the white rooks will be forced to
a passive position. The benefit is the position will simplify, so Adams
doesn't have to calculate as much. This shouldn't be underestimated as
in an over the board game the thinking time is limited. In fact I
searched for an improvement for two days until I was satisfied. This
luxury Adams didn't have.
My suggestion is 17. Re4 which lends a hand on the queenside and at the
same time prepares an advance on the kingside. The motivation is to
dislodge the Bf6 from its ideal position with g4-g5 so e7 becomes
vulnerable. If Black follows its original plan the game could continue:
17...b5 18. axb5 Bxb5 (18...Rxb5 19. Rea4 with the plan R4a3, b4, Bd2,
c4, b5 and the a-pawn is in trouble. Most likely Black pushes his pawn
to a4. In this instance Black can't afford to trade the white-squared
bishops, so White can get any diagonal he wants. If Black doesn't want
to play a4, White can annoy the rook with Be4-d3. White would like to
trade d5 versus a5 as White would then have a passed pawn and an open
file for himself.) 19. Ra3 (moves out of the diagonal of the Bf6 and
opens the possibility of a later b4. It also controls b3 where Black
would love to place the bishop.) 19...Rc8 (Black plans to attack d5 with
Bc4) 20. h4 (the threat is 21. g4 Bxh4? 22. g5 Rc4 23. Rxc4 Bxc4 24.
Ra4) 20...Bc4 (attacks d5) 21. Rf4 (White maintains the rook on the 4th
rank and renews the threat of g4-g5) 21...h5 (the rook is safe against
direct assault by 21...Be5 22. Re4 (threat Bg5xe7 e.g. 22...Kg7 23. Bg5
h6 24. Bxe7! Ra7 25. Rxe5! dxe5 26. d6 with excellent compensation)
22...Bxd5? 23. Rxe5! Bxg2 24. Rxe7 with white advantage) 22. Bd2 (White
is ready for b4) 22...a4 23. Bh3 Rc7 (23...Rc5 24. Bd7 plan Bc6) 24. Bf1
Bb3 25. Rb4 plan Rb5.
This endgame shouldn't be too hard to hold.
17...b5 18. axb5 Bxb5 19. Bxb5
This puts the black rook with tempo on a good square where it both
protects a5 and attacks d5. An alternative was 19. g4 h6 20. Re4 Kg7 21.
Ra3 (21. Bg2 Bd3 22. Rea4 Bc2 23. b4 a4 with Black advantage) 21...Bxf1
22. Kxf1 Rb5 23. c4 Rb4 24. b3 which looks defendable.
20...Rxb5 20. Rd1
20. c4 Rb4 21. Bd2 Rxb2 22. Rxa5 Rc8 loses a pawn.
20...Rc8 21. Ra4 Rcc5 22. c4 Rb3 23. Be3?
Although the black rooks look most impressive Adams managed to avoid a
pawn loss so far. But here he is rushing it. With a bit more patience
Adams could have driven off the Rb3 by 23. Rd2 followed by Kf1-e2 and
Rd3. E.g. 23. Rd2 Kg7 24. Kf1 h5 25. Ke2 Rb7 (25...g5 26. Rd3 Rb4 27.
Rxb4 axb4 28. b3 Rc7 29. Bd2 Rb7 and the rook is bound to the defense of
b4.) 26. Rc2. Now the white pieces are much better placed for the plan
Be3, Rxa5 and perhaps c5.
23...Rc8 24. Bd4 Kg7 25. Kf1 Bxd4 26. Rxd4 Rxb2 27. Rxa5 f5?
Hydra should have secured the 7th rank first. After 27...Rc7 28. Ra8 Rc2
29. Re8 R2xc4 30. Rxc4 Rxc4 31. Rxe7 Rd4 Black will enjoy a solid pawn more.
28. Ra7 Kf6 29. g4!
Adams managed to put up counter play which should have been enough to
secure the draw.
29...Rb4
Not better is 29...fxg4 30. Rxg4 Kf5 31. Rh4 Rf8 32. Rxh7 Kg5 33. Raxe7
Rfxf2+ 34. Kg1 Rfc2 35. Re1 Rxc4 36. h4+ Kg4 37. Rg7.
30. g5+?
This costs a pawn. After 30. gxf5 R4xc4 31. Rxc4 Rxc4 32. fxg6 hxg6 33.
Ra3 Black can't block the rook from attacking the king or the
disconnected black pawns, e.g. 33...Rd4 34. Rf3+ Ke5 35. Rg3 Kf5 36.
Rf3+ Rf4 37. Re3 or 33...g5 34. Rf3+ Ke5 35. Kg2 Rd4 (35...Kxd5 36.
Rf5+) 36. Rg3 Kf5 37. Rf3+ Ke4 38. Kg3 Rxd5 (38...Kxd5 39. Rf5+;
38...Ke5 39. Rf7) 39. Re3+.
Also 30...gxf5 31. Rh4 R4xc4 32. Rxh7 R8c7 33. Rxc7 Rxc7 34. Rh3 Ke5 35.
Rd3 Ke4 36. Rd1 keeps d5. If Black moves his rook to help e7 falls.
30...Kxg5 31.Rxe7 Rcxc4 32. Rxc4 Rxc4 33. Rxh7
I'm not entirely sure if the endgame after 33. Re6 is lost: 33...Rd4 34.
34. Rxd6 Kf4 35. Kg2 (no hope is after 35...Rd7 Kf3 36. Ke1 Re4+ 37. Kd2
Kxf2 38. Kd3 h5 39. Rg7 Re1 40. Rxg6 (40. Kd2 Re5 41. Rxg6 Rxd5+ 42. Kc3
f4 -+) 40...Re1+ 41. Kc4 f4 -+) 35...Ke5 35. Rd7. It seems that Black
has trouble protecting his pawns and capturing d5 at the same time.
34. Kf6 34. Rd7 Ke5 35. Rg7 Rg4 36. f3 Rg5 37. Kf2 Kxd5
Now the pawn is gone.
38. h4 Rh5 39. Kg3 Rh6 40. Re7 Kd4 41. Re1 d5 42. Rd1+ Ke5
43. Re1+ Kd6 44. Rd1 Rh5 45. Ra1 Kc5 46. Rc1+ Kb4 47. Rd1 Kc4 48. Rc1+
Kd3 49. Rc6
If 49. Rd1+ Ke2 50. Rxd5 f4+ wins the rook.
49...Rh6 50. h5 f4+ 0-1
The pawn is protected by 51. Kxf4 g5+ and Rxc6.
After the g and h pawns are traded White can't stop the d-pawn.
Comments are welcome.
Claus-Juergen
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Date: 09 Jul 2005 02:30:01
From: Grobian
Subject: Re: Hydra - Adams game 4 analysis (long)
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Am Fri, 01 Jul 2005 01:25:32 +0200 schrieb Claus-J�rgen Heigl:
> Hello,
>
> upon request here is an analysis of game 4 of the Hydra - Adams match.
>
> Adams - Hydra game 4
>
> 1. e4 c5 2. Nc3 d6 3. Nge2 Nf6 4. g3
>
> Adams plays some sort of chameleon Sicilian and here he transpose into a
> standard d6-Sicilian with d4. Adams sets up for control of the center
> white squares. That doesn't necessarily mean he has given up on
> attacking the kingside that could still be had with a later f4.
>
> 4...g6
>
> Hydra doesn't contest control of d5 with e6 and opts for a fianchetto
> itself, avoiding any weakening of d6. Although it looks like d6 isn't
> threatened at all, things could quickly change after d4 when the d-file
> will open for White. e6 would also mean the king bishop will be
> developed to e7 where it his rather passive compared to g7, where it
> exerts some pressure on the white queenside. Whatever Adams does now,
> most definitely Hydra wants to attack on the queenside, not in the center.
>
> 5. Bg2 Nc6 6. d4
>
> Adams doesn't want to play the classical closed Sicilian after 6. d3
> which could be followed up by a later f4 and attack in the f-file.
>
> 6...cxd4 7. Nxd4 Nxd4
>
> If Black doesn't want to trade the knights he has to play 7...Bd7 else
> White trades and gives his Bg2 a target. For example 7...Bg7? 8. Nxc6
> Nxc6 9. e5! with advantage (Popovic - Kozul Sarajevo 1985, also Adams -
> Dreev Linares 1997). Trading opens the c-file for Black and puts the
> white queen on an uneasy spot.
>
> 8. Qxd4 Bg7 9. O-O O-O 10. a4
>
> In the past Adams played 10. Qb4 against Short and Kramnik. Short
> answered 10...a5 11. Qb3 Rb8 12. a4 and got severely under pressure.
> Kramnik sacrificed temporarily a pawn and got Adams in a difficult
> situation after 10...a5 11. Qb3 Be6 12. Nd5 a4! 13. Qxb7 Nxd5 14. exd5
> Bf5 15. Bg5 Qb8! 16. Qxb8 Rfxb8 17. Bxe7 Rxb2 18. a3? (18. c4) Rxc2 19.
> Rae1 Ra6 20. Be4 Bxe4 21. Rxe4 Bb2 22. Rfe1 Rc1 23. Rxc1 Bxc1 24. Bf6
> Ra8 25. Rc4 Bxa3 26. Bd4 Bc5 27. Bxc5 dxc5 28. Rxc5 a3 29. Rc1 a2 0-1
>
> 10...Qa5
>
> If 10...Be6 threatening Nd5 White often plays 11. Qb4 and and can hope
> for advantage in the case of 11...Qc7 12. a5! The idea is a white pawn
> advance on the queenside. Kindermann - Wirthensohn went 12...Nd7 13. Bd2
> Rfe8 14. Rfc1 Ne5 15. Nd5 Qd7 16. Qa4 Rac8 17. Bc3 Bh3 18. Qxd7 Bxd7 19.
> f4 Nc6 20. Bxg7 Kxg7 21. c3 Nb8 22. Kf2 Na6 23. b4 Nc7 24. c4 Nxd5 25.
> exd5 1-0 (79)
>
> But I think Black has an excellent chance for equality or even a slight
> advantage if offering a pawn with 12...a5!? and now
>
> a) 13. Qxb7!? Nd7 14. Qb5 (better not wait for 14...Bc4 15. Rd1 Nc5 and
> the queen is gone; 14. Nd5 Rb8 15. Qa6 (on 16. Qc6 Nc5 (Black threatens
> Rb7 and Bd7) 17. Qc7 Qxc7 18. Nxc7 Bxb2 Black has definitively an
> advantage) 15...Nc5 16. Qe2 Bxb2 with advantage for Black because of the
> weak a-pawn) 14...Bxc3 15. bxc3 Ne5 and the miserable white pawn
> structure should be good for compensation.
>
> b) 13. Qb5 Rc8 14. e5!? (It doesn't make much sense to take the pawn now
> with an extra tempo for Black. The black threat is Bc4 and if 14. Rd1
> Nd7 15. Bd2 Rc4! plan Rb4 White experiences some trouble) 14...Nd7 15.
> exd6 (15. Qxb7 Bxe5 trading a central pawn for a wing pawn should be
> really good for Black) 15...Bc4 16. dxe7 Qxe7 17. Bg5 Qe6 18. Qxb7 Bxf1
> 19. Rxf1 Bxc3 20. bxc3 Nb6 21. Ra1 Rxc3. Black plans to eliminate all
> white pawns on the queenside. I'm not sure if the white bishops pair
> makes up for the material disadvantage.
>
> Leko still plays 10...Be6 11. Qb4 Qc7 but hasn't faced 12. a5 yet.
>
> Anyway, Hydra's 10...Qa5 stopped the idea a5 cold.
>
> 11. Qd3
>
> This is new territory. There is a game Short - Gulko that continued 11.
> Bd2 Qh5 12. Qb4 Bh3 13. f3 a5 14. Qb5 Qxb5 15. Nxb5 Bxg2 16. Kxg2 Rfc8
> 17. c3. Short doubled the rooks on the d-file, secured the queenside
> with b3 and c4 and broke the center with e5. All this without much
> chance of counter play for Black. Obviously Adams has found an
> improvement for Black. My guess would be the transfer of the black
> knight to c6 where it aims for d4 or b4 attacking c2. For instance 11.
> Bd2 Qh5 12. Qb4 Ng4 13. h3 Ne5 14. Nd5 Nc6 (not 14...Bxh3 15. Nf4) 15.
> Qb3 (Qa3!?) e6 16. Nf4 Qc5.
>
> Perhaps Adams plans to trade his queen on b5 just like Short. Hydra
> prevents this.
>
> 11...Bd7 12. Nd5 Nxd5 13. Qxd5
>
> Adams decides to test the endgame abilities of Hydra. After the queens
> are traded, Adams runs into difficulties. Perhaps it was better to leave
> the queens on board. 13. exd5 Rfb8 (plans b5) 14. Bd2 Qb6 15. Rfb1 Rc8
> 16. c3 or 16. Be3 looks quite equal.
>
> Other lines: 13. exd5 Bf5 14. Qb3 Rab8 15. Bg5 Qc7 16. c3. White may
> follow up with Qb4-h4 and/or doubling the rooks on the e-file. Black can
> prevent Bg5 like in the game, for example 13. exd5 Bf6 14. Bd2 Qc7
> (14...Qb6 15. a5 or 14...Qc5 15. b4 just gives White the opportunity to
> push his pawns) 15. c3 with the plan b3, c4 and a5, b4, c5 (see the
> Kindermann game) or if Black blocks with a5, going b3, c4, Be3, Rc1, c5.
>
> 13...Qxd5 14. exd5
>
> This looks quite equal with both sides having a half open file to put
> the rooks against a pawn. But as the game shows, Adams never manages to
> get some pressure against e7 while his queenside will come under attack.
>
> 14...Bf6!
>
> A great prophylactic move which is directed against Bg5. The bishop
> defends e7 reliably while the same time attacking the queenside.
>
> 15. c3 a5 16. Re1 Rfb8
>
> The c-pawn is well protected so Hydra shifts its focus to the base of
> the pawn chain. Black wants to open the b-file to attack the b-pawn.
>
> 17. Bf1
>
> Obviously this doesn't prevent b5 so the goal is to trade off an
> attacker, following the golden rule of defense. At first I found this
> move suspicious because also a defender of d5 is removed, a black rook
> moves on a strong place with tempo and the white rooks will be forced to
> a passive position. The benefit is the position will simplify, so Adams
> doesn't have to calculate as much. This shouldn't be underestimated as
> in an over the board game the thinking time is limited. In fact I
> searched for an improvement for two days until I was satisfied. This
> luxury Adams didn't have.
>
> My suggestion is 17. Re4 which lends a hand on the queenside and at the
> same time prepares an advance on the kingside. The motivation is to
> dislodge the Bf6 from its ideal position with g4-g5 so e7 becomes
> vulnerable. If Black follows its original plan the game could continue:
> 17...b5 18. axb5 Bxb5 (18...Rxb5 19. Rea4 with the plan R4a3, b4, Bd2,
> c4, b5 and the a-pawn is in trouble. Most likely Black pushes his pawn
> to a4. In this instance Black can't afford to trade the white-squared
> bishops, so White can get any diagonal he wants. If Black doesn't want
> to play a4, White can annoy the rook with Be4-d3. White would like to
> trade d5 versus a5 as White would then have a passed pawn and an open
> file for himself.) 19. Ra3 (moves out of the diagonal of the Bf6 and
> opens the possibility of a later b4. It also controls b3 where Black
> would love to place the bishop.) 19...Rc8 (Black plans to attack d5 with
> Bc4) 20. h4 (the threat is 21. g4 Bxh4? 22. g5 Rc4 23. Rxc4 Bxc4 24.
> Ra4) 20...Bc4 (attacks d5) 21. Rf4 (White maintains the rook on the 4th
> rank and renews the threat of g4-g5) 21...h5 (the rook is safe against
> direct assault by 21...Be5 22. Re4 (threat Bg5xe7 e.g. 22...Kg7 23. Bg5
> h6 24. Bxe7! Ra7 25. Rxe5! dxe5 26. d6 with excellent compensation)
> 22...Bxd5? 23. Rxe5! Bxg2 24. Rxe7 with white advantage) 22. Bd2 (White
> is ready for b4) 22...a4 23. Bh3 Rc7 (23...Rc5 24. Bd7 plan Bc6) 24. Bf1
> Bb3 25. Rb4 plan Rb5.
> This endgame shouldn't be too hard to hold.
>
> 17...b5 18. axb5 Bxb5 19. Bxb5
>
> This puts the black rook with tempo on a good square where it both
> protects a5 and attacks d5. An alternative was 19. g4 h6 20. Re4 Kg7 21.
> Ra3 (21. Bg2 Bd3 22. Rea4 Bc2 23. b4 a4 with Black advantage) 21...Bxf1
> 22. Kxf1 Rb5 23. c4 Rb4 24. b3 which looks defendable.
>
> 20...Rxb5 20. Rd1
>
> 20. c4 Rb4 21. Bd2 Rxb2 22. Rxa5 Rc8 loses a pawn.
>
> 20...Rc8 21. Ra4 Rcc5 22. c4 Rb3 23. Be3?
>
> Although the black rooks look most impressive Adams managed to avoid a
> pawn loss so far. But here he is rushing it. With a bit more patience
> Adams could have driven off the Rb3 by 23. Rd2 followed by Kf1-e2 and
> Rd3. E.g. 23. Rd2 Kg7 24. Kf1 h5 25. Ke2 Rb7 (25...g5 26. Rd3 Rb4 27.
> Rxb4 axb4 28. b3 Rc7 29. Bd2 Rb7 and the rook is bound to the defense of
> b4.) 26. Rc2. Now the white pieces are much better placed for the plan
> Be3, Rxa5 and perhaps c5.
>
> 23...Rc8 24. Bd4 Kg7 25. Kf1 Bxd4 26. Rxd4 Rxb2 27. Rxa5 f5?
>
> Hydra should have secured the 7th rank first. After 27...Rc7 28. Ra8 Rc2
> 29. Re8 R2xc4 30. Rxc4 Rxc4 31. Rxe7 Rd4 Black will enjoy a solid pawn more.
>
> 28. Ra7 Kf6 29. g4!
>
> Adams managed to put up counter play which should have been enough to
> secure the draw.
>
> 29...Rb4
>
> Not better is 29...fxg4 30. Rxg4 Kf5 31. Rh4 Rf8 32. Rxh7 Kg5 33. Raxe7
> Rfxf2+ 34. Kg1 Rfc2 35. Re1 Rxc4 36. h4+ Kg4 37. Rg7.
>
> 30. g5+?
>
> This costs a pawn. After 30. gxf5 R4xc4 31. Rxc4 Rxc4 32. fxg6 hxg6 33.
> Ra3 Black can't block the rook from attacking the king or the
> disconnected black pawns, e.g. 33...Rd4 34. Rf3+ Ke5 35. Rg3 Kf5 36.
> Rf3+ Rf4 37. Re3 or 33...g5 34. Rf3+ Ke5 35. Kg2 Rd4 (35...Kxd5 36.
> Rf5+) 36. Rg3 Kf5 37. Rf3+ Ke4 38. Kg3 Rxd5 (38...Kxd5 39. Rf5+;
> 38...Ke5 39. Rf7) 39. Re3+.
>
> Also 30...gxf5 31. Rh4 R4xc4 32. Rxh7 R8c7 33. Rxc7 Rxc7 34. Rh3 Ke5 35.
> Rd3 Ke4 36. Rd1 keeps d5. If Black moves his rook to help e7 falls.
>
> 30...Kxg5 31.Rxe7 Rcxc4 32. Rxc4 Rxc4 33. Rxh7
>
> I'm not entirely sure if the endgame after 33. Re6 is lost: 33...Rd4 34.
> 34. Rxd6 Kf4 35. Kg2 (no hope is after 35...Rd7 Kf3 36. Ke1 Re4+ 37. Kd2
> Kxf2 38. Kd3 h5 39. Rg7 Re1 40. Rxg6 (40. Kd2 Re5 41. Rxg6 Rxd5+ 42. Kc3
> f4 -+) 40...Re1+ 41. Kc4 f4 -+) 35...Ke5 35. Rd7. It seems that Black
> has trouble protecting his pawns and capturing d5 at the same time.
>
> 34. Kf6 34. Rd7 Ke5 35. Rg7 Rg4 36. f3 Rg5 37. Kf2 Kxd5
>
> Now the pawn is gone.
>
> 38. h4 Rh5 39. Kg3 Rh6 40. Re7 Kd4 41. Re1 d5 42. Rd1+ Ke5
> 43. Re1+ Kd6 44. Rd1 Rh5 45. Ra1 Kc5 46. Rc1+ Kb4 47. Rd1 Kc4 48. Rc1+
> Kd3 49. Rc6
>
> If 49. Rd1+ Ke2 50. Rxd5 f4+ wins the rook.
>
> 49...Rh6 50. h5 f4+ 0-1
>
> The pawn is protected by 51. Kxf4 g5+ and Rxc6.
>
> After the g and h pawns are traded White can't stop the d-pawn.
>
> Comments are welcome.
>
> Claus-Juergen
Great - thx for your analysis !
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Date: 04 Jul 2005 10:06:04
From: Franade
Subject: Re: Hydra - Adams game 4 analysis (long)
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"Claus-J�rgen Heigl" a �crit:
> 11. Qd3
> Perhaps Adams plans to trade his queen on b5 just like Short.
The queen on d3 secures the knight and controls e3, d2...
> Hydra
> prevents this.
>
> 11...Bd7 12. Nd5
12. f4! searching counterplay on the kingside. For example: 12...Ng4 13.Nd5
Qc5+ 14.Kh1 Rae8 (16...Rfe8? 15.b4 Nf2+ 16.Rxf2 Qxf2 17.Be3 Qxg2+ 18.Kxg2
Bxa1 19. Nc7 +/-) 15.b4 Nf2+ 16. Rxf2 Qxf2 17.Be3 Qxg2+ 18.Kxg2 Bxa1 19.
Bxa7 +=
Franade.
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Date: 04 Jul 2005 19:57:42
From: =?ISO-8859-1?Q?Claus-J=FCrgen_Heigl?=
Subject: Re: Hydra - Adams game 4 analysis (long)
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Franade wrote:
> "Claus-J=FCrgen Heigl" a =E9crit:
>>11...Bd7 12. Nd5
>=20
> 12. f4! searching counterplay on the kingside. For example: 12...Ng4 13=
=2ENd5
> Qc5+ 14.Kh1 Rae8 (16...Rfe8? 15.b4 Nf2+ 16.Rxf2 Qxf2 17.Be3 Qxg2+ 18.Kx=
g2
> Bxa1 19. Nc7 +/-) 15.b4 Nf2+ 16. Rxf2 Qxf2 17.Be3 Qxg2+ 18.Kxg2 Bxa1 19=
=2E
> Bxa7 +=3D
Interesting line, but Black can improve with 15...Qd4 16. Qxd4 (16. Ra3=20
Nf2+ 17. Rxf2 Qxf2 18. Be3 Qe1+ does not catch the queen; 16. Rb1 Qxd3=20
17. cxd3 Bxa4 loses a pawn) 16...Bxd4 17. c3 Nf2+ (17...Bg7 is also=20
possible) 18. Kg1 Nh3+ =3D)
Black can make matters complicated with the pawn sacrifice 12...e6!?=20
which denies d5 to the white knight.
a) After 13. Qxd6 Rfd8 White runs into trouble for instance 14. Be3 Ng4=20
15. Qc5 Qa6 16. Bf2 Bf8 17. Qg5 Nxf2 18. Rxf2 Qb6 with the threats Bc5=20
and Qxb2. Or 14. b4 Qh5 (threat Bb5) 15. Qe5 (15. Qd1 Ng4 16. h3 Bxc3=20
17. hxg4 Qh6 18. Ra3 Bc6 19. Qe2 (19. Rxc3!? Rxd1 20. Rxd1 Bxa4 -/+)=20
19...Bxb4 -/+) 15...Qh6 (threat Ng4) 16. Qg5 Qxg5 17. fxg5 Ng4 18. Bb2=20
Bd4+ 19. Kh1 Nf2+ and Rxf2 is forced because else Nd3+ wins.
b) 13. e5 opens the game to the advantage of Black. 13...dxe5 14. fxe5=20
Qxe5 15. Bxb7 Rab8 16. Bg2 Rfd8 17. Bf4 Qc5+ 18. Be3 (18. Qe3 Qxe3 19.=20
Bxe3 Rxb2) 18...Qc7. White has a lot of problems on the queenside.
c) White better not takes the pawn. 13. Bd2 Qh5 14. Bf3 (14. Qxd6 Bc6=20
(threats Rfd8 and Qb6+/Qxb2) 15. Nd1 (15. Qd3 Qb6+ 16. Kh1 Rfd8 17. Qe2=20
Qxb2 18. e5 Qxc2 loses a pawn) 15...Qh5 16. h3 Rfd8 17. hxg4 Qxg4 18.=20
Qb4 a5 and Black will win back his piece on d2 with superior position)=20
14...Qh5 15. Bxg4 Qxg4 16. Be3 (again White should pass on 16. Qxd6 Bc6=20
17. Qb4 Rfd8 18. Be3 h5 19. Bf2 h4 20. Rae1 (20. Rad1 hxg3 21. hxg3=20
Rxd1 22. Nxd1 Qe2 -/+) 20...hxg3 21. hxg3 Rd2 22. Nd5 Rxd5! 23. exd5=20
Bxd5 (threats Qf3 and Qh3) 24. Rd1 Bc6 25. Rd6 Bf8 and wins)) 16...Rfc8=20
17. Bd4 Bf8 =3D
Claus-Juergen
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Date: 01 Jul 2005 09:35:46
From: Tantale
Subject: Re: Hydra - Adams game 4 analysis (long)
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Very interesting
Thanks
--
http://www.jmrw.com/
J'ai d�couvert que tout le malheur des hommes vient d'une seule chose, qui
est de ne savoir pas demeurer en repos dans une chambre.
Pascal (Pens�es)
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