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Rainer Knaak vs Andras Adorjan
"Knaak is OK" (game of the day Sep-01-2011)
Szirak (1985), Szirak HUN, rd 1, Oct-06
Nimzo-Indian Defense: Normal. Bronstein (Byrne) Variation (E45)  ·  1-0



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Given 35 times; par: 15 [what's this?]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
May-24-21  kevinatcausa: One of those situations where black's position would be so much better if they could just make their G-pawn disappear. Not great, but at least not an immediate loss.
May-24-21  TheaN: Honestly these kind of combinations should be what a Monday should be. More recently have we been treated on pretty complex positions with a fast knockout, but still pretty far fetched.

<21.Rh8+ Kxh8 22.Qh5+ Kg8 23.Qh7#>. This pattern is crucial to know. The fact that the queen covers the castle square from h2/h7 means the rooks are just cannon fodder for tempos.

click for larger view

White to play #7. You should know how by now :>

May-24-21  awfulhangover: Seriously, I solved it in less than 1 second, and I guess I am not the fastest!
May-24-21  zb2cr: Mate in three. 21. Rh8+ draws the Black King out where he can be checked to death. 21. ... Kxjh8; 22. Qh5+, Kg8; 23. Qh7#.
May-24-21  1g1yy: I started off immediately with qh5, and although it does allow black one full tempo, the end result is the same. I see the Rook Sac is more forceful but mate is mate.
May-24-21  1g1yy: Ah, fxg6 offers a flight Square. 0 - 1 for Monday, LOL
May-24-21  DrGridlock: <1g1yy: I started off immediately with qh5, and although it does allow black one full tempo, the end result is the same. I see the Rook Sac is more forceful but mate is mate.>

Can you give us your line to mate after:

21 Qh5 fxg6

The entire point of the puzzle is that black can put his "one full tempo" to quite good use, opening up the "escape hatch" and remaining two full bishops to the good.

Premium Chessgames Member
  chrisowen: Lerky i velodrome Rh8 gestate vintage arrive axiomed its jekyll i velodrome affable petulance its guv lerky bandjob its whirl quipper matrix cant glocky foggies vestige its guv canyon duvet its job woe its cows i vestige mappy its hay vestiges dealt fig bitz quality totadd fertile chops eg flick quality vestige divots its chuppy with lead its doctor x Rh8 caddy?
May-24-21  saturn2: 21 Rh8. Black is KO
May-24-21  thegoodanarchist: A Knaak for tactics.
Premium Chessgames Member
  chrisowen: No verdict bad it is h8 v flog?
May-24-21  Walter Glattke: Gridlock &1g1: 21.Qh5?? fxg6 22.Qh7+ Kf7 23.0-0-0 Rh8 qxr rxr rxr Qf4+ -8.0 / 23.Qf3 Bxc3+ 24.bxc3 Qxc3+ 25.Kf2 Bxc4 -++ 21.Rh8+ sac or lose
May-24-21  Scuvy: "Knaak Knaak knocking on Adjoran's door."

Rook sac Mondays are a great way to start the week!

May-24-21  landshark: <Diademas> Nice Avatar! Where do you guys get those?
May-24-21  cormier: sf Depth 31

+8.89 13....Re8 14.Qg4 Nxc4 15.Nf6+ Kf8 16.Rh8+ Ke7 17.Rxe8+ Qxe8 18.Nxe8 Nxb2 19.Kd2 Rxe8 20.Kc2 d5 21.Kxb2 dxe4

+9.67 13....Bxc3+ 14.bxc3 Re8 15.Qg4 Bb7 16.Nf6+ Kf8 17.Rh8+ Ke7 18.Rxe8+ Qxe8 19.Nxe8 Rxe8 20.Bxb7 Nxb7 21.Qe4 Nd8

+10.54 13....Qxg5 14.f4 Qg6 15.Bxg6 Bxc3+ 16.bxc3 fxg6 17.Qg4 gxh5 18.Qxe6+ Rf7 19.Rxh5 Bxc4 20.Qe4 Rd8 21.O-O-O Rf6

+11.18 13....f5 14.gxf6 Rxf6 15.Qg4 Qf8 16.Nxf6+ Qxf6 17.Bxa8 Kf7 18.O-O-O Qg6 19.Qf3+ Qf6 20.Qxf6+ gxf6 21.Ne4 d5

May-24-21  cormier:

sf Depth 32

+7.23 12....Re8 13.gxf6 gxf6 14.e5 dxe5 15.Qg4+ Kf8 16.O-O-O Bxc3 17.bxc3 e4 18.Bxe4 Nxc4 19.Qg7+ Ke7 20.Qxf6+ Kf8

+9.58 12....Nxe4 13.Bxe4 Re8 14.Qg4 Bb7 15.Nf6+ Kf8 16.Rh8+ Ke7 17.Rxe8+ Qxe8 18.Nxe8 Rxe8 19.Bxb7 Nxb7 20.Qf3 Na5

+9.47 12....Bxc3+ 13.bxc3 Nxe4 14.Bxe4 Re8 15.Qg4 Bb7 16.Nf6+ Kf8 17.Rh8+ Ke7 18.Rxe8+ Qxe8 19.Nxe8 Rxe8 20.Bxb7 Nxb7

May-24-21  cormier: sf Depth 30

+6.36 12.hxg5 Re8 13.gxf6 gxf6 14.e5 dxe5 15.Qg4+ Kf8 16.O-O-O: exd4 17.Qg7+ Ke7 18.Bg6 Rf8 19.Nd5+ Kd7 20.Nxb4

May-24-21  johnnydeep: Finally a Monday puzzle even this imbecile could solve in under 20 seconds. The rule this sequence epitomizes: if you find a check, see if you can continue checking until you win :-)
May-24-21  cormier: sf Depth 30

+6.22 11....Nxh5 12.Bxd8 Nf4 13.Bf6 Bxc3+ 14.bxc3 Nxd3+ 15.Qxd3 gxf6 16.Qf3 Kh7 17.Qxf6 Rg8 18.Rh3 Bxc4 19.Rg3 Raf8

+6.60 11....Nxc4 12.Nxf6+ Qxf6 13.Bxf6 Nxb2 14.Qg4 Bxc3+ 15.Kf1 Bxd3+ 16.Kg1 g6 17.Qf4 Kh7 18.Rc1 Na4 19.Be7 Rg8

+6.94 11....hxg5 12.hxg5 Re8: 13.gxf6 gxf6 14.e5 dxe5 15.Qg4+ Kf8 16.O-O-O Bxc3 17.bxc3 e4 18.Bxe4 Nxc4 19.Qg7+ Ke7

+7.82 11....Bxc3+ 12.bxc3 hxg5 13.hxg5 Nh7 14.Nf6+ Nxf6 15.gxf6 Qxf6 16.e5 Qg5 17.Bh7+ Kh8 18.Rh5 Qh6 19.Be4 Bb7

May-24-21  cormier: sf Depth 34

+6.34 11.Nh5 Nxh5 12.Bxd8 Nf4 13.Bf6

May-24-21  cormier: sf Depth 32

+0.66 10....Nxc4 11.Qe2 Nxb2 12.Qxb2 Bxd3 13.Bxf6 Qxf6 14.Qxb4 c5 15.Qa3 Qxd4 16.Rd1 c4 17.Nce2 Qe5 18.Qc3 Qxc3+

+1.94 10....Be7 11.Bxf6 Bxf6 12.e5 Bxh4 13.Qg4 Bg5 14.Nce4 Bxc4 15.Nxg5 Qxg5 16.Qxg5 hxg5 17.Bh7+ Kh8 18.b4 Nc6

+2.99 10....Bxc4 11.e5 Be7 12.exf6 Bxf6 13.Bxf6 Qxf6 14.Nh5 Qe7 15.Bxc4 Nxc4 16.Qe2 Nd6 17.g4 c6 18.O-O-O g6

+3.74 10....d5 11.e5 Nxc4 12.Bxc4 Bxc4 13.exf6 Re8 14.Qg4 Bxc3+ 15.bxc3 e5 16.O-O-O Qd6 17.Kb2 Qc6 18.Bxh6 Qxf6

+4.04 10....hxg5 11.hxg5 Nxc4 12.gxf6 Qxf6 13.Qh5 Qh6 14.Qe2 Bxc3+ 15.bxc3 Qg5 16.Bxc4 Bxc4 17.Qxc4 Rac8 18.Qd3 g6

+6.34 10...d6 11.Nh5 Nxh5 12.Bxd8 Nf4 13.Bf6

May-24-21  AlicesKnight: Another of those Rh8+ tempo-gainers for the Q to intervene. A delightful sequence from move 16.
May-24-21  Damenlaeuferbauer: After long pondering, my compatriot, the strong GM Rainer Knaak, who was 5 times champion of East Germany, finally found the mate in 3 moves with the nice rook sacrifice 21.Rh8+!,Kxh8 22.Qh5+,Kg8 23.Qh7#. Maybe his best game was his win with the exchange variation of the Queen's Gambit Declined against Efim Geller 1982 in Moscow.
May-24-21  Nullifidian: Why didn't this puzzle start on move 19? It would have been just as easy and the winning line would have still involved the rook sac.

Anyway, 21. ♖h8+ ♔xh8 22. ♕h5+ (♕h3+ also wins, but this is more efficient since the queen can't interpose) ♔g8 23. ♕h7#

Premium Chessgames Member
  catlover: This puzzle makes me feel nostalgic. It reminds me of the Monday puzzles from years ago.
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