Peter Krug vs Heinz Hauptmann (1955)

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Peter Krug vs Heinz Hauptmann
GDR-ch U18 (1955), Schkopau GDR, rd 8, Aug-22
French Defense: Tarrasch Variation (C03) · 1-0

8

7

6

5

4

3

2

a

1

b

c

d

e

f

g

h

White to move.

ANALYSIS [x]

Notes by Stockfish 11 (minimum 6s/ply) 3...c5 4.exd5 exd5 5.Bb5+ Bd7 6.Bxd7+ Nxd7 7.dxc5 = 0.00 (37 ply) ⩲ +0.83 (29 ply) 4...Nd7 5.c3 Ngf6 6.Bd3 Nxe4 7.Bxe4 Nf6 8.Bg5 c5 = +0.01 (36 ply) 5.Nf3 Nf6 6.Bb5+ c6 7.Nxf6+ gxf6 8.Bd3 Bb7 9.Bf4 ⩲ +1.13 (28 ply)= -0.22 (30 ply) 6...Qc8 7.Bf4 Nd7 8.Qf3 Rb8 9.Qe2 Ne7 10.Nf3 Ng6 = +0.24 (30 ply) ⩲ +1.30 (31 ply)better is 7...Be7 8.O-O Nf6 9.Ne5 Na5 10.Nxf6+ Bxf6 11.Bxb7 = +0.46 (31 ply) ⩲ +1.07 (29 ply) 8...Rd8 9.Qe2 Nf6 10.Nxf6+ gxf6 11.Rd1 Ne7 12.b3 Bg7 ⩲ +0.76 (32 ply) 9.c3 Nf6 10.Ned2 e5 11.dxe5 Ne4 12.Qe1 Nxd2 13.Bxd2 Be7 ± +1.67 (29 ply) 9...f6 10.Qe2 h6 11.Rad1 Qf7 12.c4 Nge7 13.Nc3 Kb8 14.a3 = +0.46 (31 ply) ± +1.83 (28 ply) 11.Nc4 Nf6 12.a4 Qe8 13.a5 b5 14.a6 Ba8 15.Na3 Bxa3 ± +1.64 (29 ply)= 0.00 (36 ply) 12.d5 exd5 13.cxd5 Nb4 14.Nc4 Bxd5 15.Nfe5 Qe8 16.Bxd5 = +0.45 (32 ply) 12...Nge7 13.Qe2 Bg7 14.Rfd1 Kb8 15.Rac1 Ng6 16.Ne5 Bxe5 ⩱ -0.78 (28 ply) 13.d5 exd5 14.cxd5 Rxd5 15.Nxg5 Rxd1 16.Nxf7 Rxa1 ⩲ +0.76 (35 ply) 13...Nge7 14.a4 f4 15.gxf4 Qh5 16.a5 Nxa5 17.Qd1 Nxc4 ⩱ -1.34 (29 ply)= +0.39 (32 ply)better is 14...Nge7 15.a5 f4 16.axb6 cxb6 17.Bd2 Bg7 18.Qb1 Rhf8 ⩱ -0.53 (31 ply)= +0.08 (33 ply) 18...Ng4 19.cxb6 cxb6 20.Bxb6 Kxb6 21.h3 Nxf2 22.Qe3+ = 0.00 (36 ply) 19.Nxa5+ bxa5 20.c6+ Kc8 21.Qc4 Rd6 22.Qa6+ Kd8 23.exd6 +- +10.77 (35 ply) 19...Ka7 20.Nxa5 Nxe3 21.Qxe3 f4 22.Qc3 Qf5 23.Nb3 Qd3 ⩲ +0.52 (35 ply)+- +7.40 (35 ply) after 20.Nxa5 Nxe3 21.Qxe3 Rd5 22.Nb7 Qe8 23.Rac1 Kb8 24.Qb3 20...Nb4 21.Rad1 Qe8 22.Rxd8+ Qxd8 23.Qxe6+ Kb8 24.Rc1 +- +4.61 (33 ply)better is 21.Nxa5 Nb4 22.Nb7 Nxc6 23.Qxc6 Qd7 24.Nd6+ Kd8 25.Nf7+ +- +12.38 (33 ply) 21...Kd8 22.Qa6 Bb4 23.Qa7 Ke7 24.Bxb6 Kf8 25.Bxa5 Bxa5 +- +3.94 (36 ply)+- +8.58 (33 ply)30...Kc8 31.Rb8# +- mate-in-11-0

rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1

FEN COPIED

Annotations by Stockfish (Computer). [35434 more games annotated by Stockfish]

explore this opening	find similar games	31 more games of P Krug
sac: 25.Bxb6	PGN: download \| view \| print	Help: general \| java-troubleshooting

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Mar-16-23		goodevans: I saw 25.Rd8+ in a flash. It's winning but it turns out it's not quite as winning as the game line. Is finding the absolute best winning line amongst several this week's theme?

Mar-16-23		Mayankk: My first instinct was to play 25 Rd8 Ka7 (25 ... Rxd8 26 Qxe6) 26 Qxe6 Rxe6 27 Rxa8 fxe6 28 fxe3. And White is up an exchange. I then thought that since the Bishop was lost anyways, may as well sac it first via 25 Bxb6 cxb6 26 Rd8+ Kc7 27 Qxe6 Rxe6 28 Rxa8. The main difference was that Black King is now more active but White has one more pawn. I didn't figure out the more deadly 27 Rd7+ manoeuvre. At least not till I saw the text.

Mar-16-23		Brenin: Brenin: 25 Bxb6 is the obvious way of breaching the Black K's defences. If 25 ... cxb6 then 26 Rd8+ Kc7 (or Ka7; if Rxd8 then 27 Qxe6) 27 Rd7+ Kb8 (otherwise Qa6+ with mate) 28 Rb7+ Kc8 (Ka8 29 Qa6 mate) 29 Qa6 (threat Qa8 mate) Kd8 30 Qxb6+ Kc8 31 Qc7 mate. If Black decines the B sac he is 2P down with a great big hole in his K's defences.

Mar-16-23		Honey Blend: Weakening the black king's defenses with 25. ♗xb6 cxb6 26. ♕b5 seems reasonable. It's impossible to effectively defend b6 after this without heavy material loss, e.g. 26. ... ♔c7 (or ♔a7) 27. ♖d7+ etc.

Mar-16-23		King.Arthur.Brazil: My try is: 25. Rd8+. Maybe, Black refuse: Ka7 26. Bxb6+ (Kxb6 27. Qb5+ Ka7 28. Qb7#) cxb6 27. Rd7+ Kb8 28. Rb7+ Kc8 29. Qa6 and mate next. (If 29. Kd8 30. Rd1+ to avoid 31... Qc8 as answer to 31. Qa8+). Therefore, Black must reply 25... Rxd8 26. Qxe6 fxe3 27. fxe3 Rde8 28. Qd5 Bc5 29. Qd3 Rxe5 30. Qa6... mate to come. Hope I didn't forget any detail this time.

Mar-16-23		Mayankk: At the end a more aesthetically pleasing mate arises from 30 Qa8+ Qc8 31 Rd7#

Mar-16-23		wolfshield: 25. Rd8+ Ka7 26. Ra8+ if 26... Kxa8, then Qa6+ followed by Qb7# if 26... Rxa8 then Qxdi6 (as would happen in the game line if ...Rxd8)

Mar-16-23		mel gibson: It took me a few minutes to get that solution. I wasted a lot of time to find out that other moves had an attack that fizzled out. Stockfish 15 says: 25. Bxb6 (25. Bxb6 (Be3xb6 c7xb6 Qc4-b5 Kb8-c7 Rd5-d7+ Qe6xd7 c6xd7 Re8-e6 Qb5-d5 Re6-c6 Ra1-d1 Bb4-e7 Qd5-f7 Kc7-d8 g3xf4 g5xf4 Qf7xf4 Rh8-f8 Qf4-e4 Kd8-c7 Kg1-h1 Rc6-c5 f2-f4 Rf8-h8 Qe4-d3 Rh8-d8 Qd3-d4 h6-h5 f4-f5 Be7-f8 f5-f6 Rc5-c6 Qd4-f4 Rc6-e6 Qf4-c4+ Re6-c6 Qc4-f7 Bf8-h6 e5-e6 Rc6-d6 Rd1xd6 Kc7xd6 Kh1-g2 Bh6-c1 Qf7-e7+ Kd6-c7 f6-f7 Bc1-h6 Qe7-e8 h5-h4 e6-e7 Rd8xd7 f7-f8Q Rd7-d2+ Kg2-h3 Rd2-d3+ Kh3xh4 Rd3-d4+ Kh4-h5) +16.27/33 443) score for White +16.27 depth 33.

Mar-16-23		agb2002: White is one pawn up. Black threatens fxe3. The rook on e8 is overloaded with the defense of the queen and the back rank. This suggests 25.Rd8+: A) 25... Ka7 26.Bxb6+ A.1) 26... Kxb6 27.Qb5+ Ka7 28.Qb7#. A.2) 26... cxb6 27.Rd7+ (better than 27.Qxe6 Rxe6 28.Rxh8) A.2.a) 27... Ka8 28.Qa6+ Kb8 29.Qb7#. A.2.b) 27... Kb8 28.Rb7+ (28.Qa6 Qxc6) 28... Kc8 (28... Ka8 29.Qa6#) 29.Qa6 and mate in two (29... Kd8 30.Qa8+ Qc8 31.Rd7#). A.2.c) 27... Qxd7 28.cxd7 looks winning (28... Rxe5 29.Qc7+ and 30.Qxe5; 28... Rd8 29.Qc7+ Ka6 30.Rc1 Bc5 31.Rxc5 Bxc5 32.e6). B) 25... Rxd8 26.Qxe6 fxe3 27.fxe3 wins decisive material.

Mar-16-23		jrredfield: I saw 25 Bxb6 cxb6 almost immediately but then struggled with how to proceed. I thought maybe 26 c7 but wasn't sure.

Mar-16-23		Refused: Saw 25.Rd8+ instantly and didn't bother to look for anything better, 25.Rd8 Ka7 26.Bxb6 cxb6 (Kxb6 runs into 27.Qb5+) 28.Rd7+ and this is just absolute misery. Black will have to capture on d7 and then he can't really keep the queen out of c7. e.g. 28...Qxd7 29.cxd7 Rd8 30.Qc7+ Ka8 31.e6 and now white is threatening Qxb6 and Rc1. if black tries to cover be with 31...Bc5 32.b4 makes the position collapse.

Mar-16-23		cocker: 26 Qb5 is stronger than the flashy 26 Rd8+.

Mar-16-23		Dohboy: Mayankk, you're right, that would have been a very pretty finish.

Mar-16-23		Socrates2: I agree with Mayankk's 30. Qa8+ - there are more ways than one to skin a cat.

Mar-16-23		TheaN: Add me to the list of the people going for <25.Rd8+?!> straight away. It wins, so it's arguable whether it's wrong. 25.Bxb6+! is better because of the game line, but a bit more sophisticated. In the Rd8+ line, <25....Rxd8> is significantly better than Ka7 as White still has Bxb6+. <26.Qxe6 fxe3 27.fxe3 Rhe8 28.Qc4 +-> is winning, but White still has some work to do.

Mar-16-23		Cellist: I also chose 25.Rd8+ and concluded that it was clearly winning, which it is.

Mar-16-23		chrisowen: I mark it is z with favours push it is Bxb6 accomodate match it is ho acrid mid arrived it is odd Bxb6 cat;

Mar-16-23		jrredfield: My engine analysis shows 25 Bxb6 (+15) clearly superior to 25 Rd8 (+5). Bd4 and Bxf4 are also in the +5 to +7 range but still well below the text move.

Mar-16-23		ClassZPlaya: I went with 25. Rd8+ which also wins handily after either 25. ... Rxd8 26. Qxd6 or 25 ... Ka7 26 Qxd6 Rxd6 27. Rxh8

Mar-16-23		Check It Out: The line I saw: 25.Rd8+ Ka7 26.Ra8+ Rxa8 27.Bxb6+ cxb6 28.Qxe6 leaving white up Queen + 2 p for R+B. Let's see what happened.

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