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Vlastimil Hort vs Ivan Radulov
Sunny Beach (cat 9) (1974), Slanchev Bryag BUL
Sicilian Defense: Richter-Rauzer. Classical Variation (B64)  ·  1-0



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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 1 OF 2 ·  Later Kibitzing>
Jun-26-04  patzer2: One Bishop sacrifice is enough for Hort to win after 15. Bxh7+!!

This move is the solution to number 1594 in the Batsford Encyclopedia of Middle Games (Demolition of Pawn Structure: Sacrifice on h7). Note that if Black declines the sacrifice with 15...Kh8, then the attack with 16. Bd3 g6 17. h4 Kg7 18. h5 is winning for White.

In the final position, play could continue 17...Nde5 18. Qh7+ Kf6 19. Nce4 dxe4 20. Ne4#.

Oct-31-06  razarahman: I think the loss of black is due to lack of development, his pieces lack central control and are poorly extermly underdeveloped. Even if he aviods 15.Bxh7 by playing a pawn earlier still his white has huge positional advantage leading him to win.
Aug-29-07  sanyas: Black was put off by the fact that he had played a Sicilian instead of a French; the position was screaming for a Greek Gift.
Jul-02-14  Chess Dad: I had each move, one move in advance.

But I couldn't see all the variations black might have tried.

15. Bxh7+ Kxh7
16. Ng5+ Kg6
17. Qh3

At this point, I'm not sure why black gives up. Yeah, white threatens Qh7#, but to me I don't see why Ncxe5 isn't playable.

But let's try that and see what happens.

17... Ncxe5
18. Qh7+ Kf6
19. Nce4+ dxe4
20. Ngxe4#

Ok, I didn't see that from the beginning. It's mate in 6 from the puzzle position. Knowing it was a puzzle, I tried the forcing moves. But I wouldn't have been able to see mate in 6 from the position after 14... Rb8.

Premium Chessgames Member
  Cheapo by the Dozen: Maybe I'm missing something, but this looks like a classic BxKRP sacrifice.

The main theme is Bxh7/Nxg5/Qh3. If Black declines the bishop it winds up at g6. Black's king isn't allowed on f7 even if the f-pawn is pushed, and his king can't get to the queenside fast enough.

Accepting the sacrifice and running to g6 doesn't work either, because White's queen gets to the h-file before Black's unsupported rook does.

Black's potential pawn fork on d4 is irrelevant, as White wants to move his queen away in a very forcing way anyhow.

Premium Chessgames Member
  An Englishman: Good Evening: Saw the solution; presumably, Radulov expected 17.Qd3+. However, I also noticed 17.Qg3, threatening 18.Nxe6+ and 19.Nxd5. Also a win, but slower and therefore less good?
Premium Chessgames Member
  Cheapo by the Dozen: OK, I did that quickly and didn't check the line in which Black plays Nxe5. But once again, I invoke Spielmann -- in positions like this you attack with great faith that you can win. Black neither has pieces actively defending nor an open path allowing easy king flight; this is almost the perfect situation for the classic sacrifice.
Jul-02-14  M.Hassan: "Medium/Easy"
White to play 15.?

Bishop sac opend the line of attack:
15.Bxh7+ Kxh7
16.Ng5+ Kg8
17.Qh3 threatening mate on h7 and Black can do little but to delay mate 17...........Rd8
18.Qh7+ Kf8
It appears that black can exchange his Queen with the Knight and play on for a while: 17..........Qxg5

Win comes for White even if Black declines the Bishop:]

15.Bxh7+ Kh8
16.Ng5 f6
17.Qh3 fxg5
18.Bg6+ Kg8

Premium Chessgames Member
  al wazir: We've all noticed that ♕ sacrifices play an inordinately large role in these puzzles. Another meme with a high success rate is sacking a piece by capturing a ♙ in front of a castled ♔. So when I saw that 15. Bxh7+ was available, I told myself that must be it.

The next two moves are straightforward. After 17...Nf6, I suppose white has to be content with 18. exf6 Kxf6 19. Nh7+ Kg6 29. Nxf8+.

Jul-02-14  Dr. J: Here are some more possibilities for Black in the final position:

17...Nf6 18.exf6 Qc5 (instead of <al wazir>'s Kxf6);

17...Rh8 18.Qxh8 Kf5 (then if 19.g3 N7xe5; or 19.Nh3 Kg6.)

This looks winning for White in all cases, but I don't think Black had to resign yet.

Premium Chessgames Member
  Cheapo by the Dozen: I think my biggest "What was that???" reaction in a casual game came from just this kind of sacrifice, also around Move 15. I'd just taken my one and only corporate job as a whiz kid, and a colleague 30 years older wanted to test himself against me in chess. So on a command performance I stopped by his office and played a few games, of which he even won one.

But while he was smart, he'd evidently never actually studied chess, and probably had never been mated in a quick sacrificial attack like this in his life. :)

Premium Chessgames Member
  al wazir: <Dr. J: 17...Nf6 18.exf6 Qc5> 19. Qh7+ Kxf6 20. Ne4+ dxe4 21. Nxe4+.
Premium Chessgames Member
  agb2002: The material is identical.

The position looks ready for the typical bishop sacrifice on h7, 15.Bxh7+:

A) 15... Kxh7 16.Ng5+

A.1) 16... Kg6 17.Qh3

A.1.a) 17... Ndxe5 (or 17... Ncxe5) 18.Qh7+ Kf6 19.Nce4+ dxe4 20.Nxe4#.

A.1.b) 17... Rh8 18.Qxh8 Nf8 19.g4 Nxe5 20.Qh5+ Kf6 21.Nge4+ dxe4 22.Qg5# or 22.Nxe4# or 22.fxe5#.

A.1.c) 17... Nf6 18.exf6 Kxf6 (18... g(Q)xf6 19.Qh7#) 19.Nh7+ Kg6 20.g4 and mate in two.

A.1.d) 17... Qxg5 18.fxg5 + - [Q+P vs B+N].

A.2) 16... Kg8 17.Qh3

A.2.a) 17... Rd8 18.Qh7+ Kf8 19.Qh8#.

A.2.b) 17... Nf6 18.exf6 and mate in two.

A.2.c) 17... Qxg5 18.fxg5 + - [Q+P vs B+N].

A.3) 16... Kh6(8) 17.Qh3+ and 18.Qh7#.

B) 15... Kh8 16.Ng5

B.1) 16... f6 17.Bg6 and mate in three.

B.2) 16... g6 17.Qh3 Kg7 18.Bxg6 Rh8 (18... fxg6 19.Qh7#) 19.Bh5 Nxe5 20.g4 (20.fxe5 Qxg5+) and White is a pawn ahead and keeps the attack.

B.3) 16... d4 17.Qh3 wins.

Jul-02-14  VincitQuiSeVincit: In the <al wazir> line 17...Nf6, 18. exf6 Kxf6 19. Nh7+ Kg6, better than 20. Nxf8+ would be 20. g4 (threatening 21. Qh5# )
Jul-02-14  jdc2: The position before Bxh7 is similar to one in Vukovic's book "The art of attack in chess", where a similar position arises from the French defense with similar results.
Premium Chessgames Member
  FSR: The sac on h7 is very strong. Black's best response - but hardly sufficient - is to sac his queen for two minor pieces.
Jul-02-14  stacase: I'm always trying for that Bishop sacrifice. It's a killer move when you can pull it off.
Jul-02-14  Dr. J: <al wazir: <Dr. J: 17...Nf6 18.exf6 Qc5> 19. Qh7+ Kxf6 20. Ne4+ dxe4 21. Nxe4+.>

Indeed. Other Queen moves (to d8, b4, b7, etc., would prevent the fork, but White's attack is still strong.

Jul-02-14  morfishine: The strongest move-order appears to be:

First <15.Bxh7+>

15...Kxh7 16.Ng5+ Kg6 and now <17.Qh3>

To this, I've been unable to defend as Black


Jul-02-14  zb2cr: Classic Bishop sacrifice! 15. Bxh7+, Kxh7; 16. Ng5+, Kg6; 17. Qh3 brings down the curtain.
Jul-02-14  CC0112358: <agb2002> nice analysis! There is also a possible black continuation with a Queen sacrifice 16.....Qxg5. Exchanges the Queen for two small pieces. Don't think it is sufficient for black to prevail but it looked like a possible counter.
Jul-02-14  Stormbringer: Sometimes I feel like it would be more instructive to study games where the bishop sac on h7 didn't work.
Jul-02-14  pedro99: The Kottnauer-Kotov game is one which almost didn't work. I'd like to see an updated annotation of this game with the help of a few super computers. Aggressive lines are easier to play as an attacker.
Jul-02-14  beenthere240: CG has posted spoilers in the past where the CBS is a bust.
Premium Chessgames Member
  Penguincw: 3/3 this week, although I wouldn't have known what to do after 16...Kg6 (nevermind, play 17.Qh3 anyway).
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