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Alexander Kotov vs Paul Keres
USSR Championship (1951), Moscow URS, rd 6, Nov-21
Kangaroo Defense: Keres Defense. Transpositional Variation (E00)  ·  1-0
ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
Jun-03-08
Premium Chessgames Member
  Domdaniel: The "Kangaroo Defence" - aka the Franco-Indian or the Keres Defence - is simply 1.d4 e6 2.c4 Bb4+ ...

It almost always transposes - most usually to a Bogo-Indian, sometimes to a Dutch, occasionally to a Catalan or a Queen's Indian. In this game, 3.Nc3 offers to transpose to a Nimzo-Indian as soon as Black plays ...Nf6.

In fact it winds up in a line normally reached via the move-order 1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.e3 b6 5.Ne2 c5 6.a3 Ba5 7.Rb1 -- the Romanishin-Psakhis System in the Rubinstein Variation [E42].

This seems to be the earliest game in this line. Several of the ideas here -- 6...Ba5 by Black, 7.Rb1 by White (trying to force b4), Black's ...Na6 (covering b4 & developing) and ...h5 (harrying the Ng3 and tying up White's piece development) - are still current. In this particular line, however, 9...0-0 is now usually preferred to ...h5, though the ...h5 idea works well in similar positions.

9...h5 practically forces Black to castle queenside, where White already has an initiative and the black pieces are awkwardly placed.

Yet, after several minor errors by both sides, Black only finally loses with 34...Ke7? -- instead 34...Rc8 should at least draw. For example, Black is better after 34...Rc8 35.Rb7+ Kd8 36.Qxa5+ Ke8.

But, just prior to this, White had missed a win. Instead of Kotov's 33.Qc3+?, 33.Qb3! wins at once.

Not a masterpiece, but a great example of chess as struggle -- a tough fight, with victory going to the player who made the last mistake but one.

Jun-17-15  zydeco: <Domdaniel> Nice analysis.
Sep-11-18  cwcarlson: 27...♘c4?+-; 27...♖c5 28.♗c5 ♘c4 29.♕a2 ♕c5= Houdini. 27...♖c5 28.♖d6 ♖d6 29.♗c5 ♖d2 30.♕a5 ♗f3= Houdini.
Sep-11-18  WorstPlayerEver: 12... h3 these moves kinda irritate me. Although the content of this game is quite hilarious.


click for larger view

13. Bg5 Qc7 14. Bf4 hxg2 and a small plus for White, so Black apparently had no idea when marching up to h3.


click for larger view

-------

So did White, 15. gxh3 (15. Ng3 hxg2=) and White is simply a pawn up.


click for larger view

Sep-12-18
Premium Chessgames Member
  whiteshark: re <cwcarlson's> analysis:


click for larger view

Black to move

1) +0.84 (32 ply) <27...Rxc5 28.Bxc5 Nc4 29.Qa2 Qxc5+> 30.Rd4 e5 31.Qxe2 exd4 32.cxd4 Qxd4+ 33.Kh1 Nb6 34.e5 d5 35.Qh5 g6 36.Qh7 Rd7 37.Qg8+ Kc7 38.e6 Re7 39.Rc1+ Nc4 40.Qxg6 Kd6 41.Qg8 Qe5 42.h4 Qxe6 43.Qd8+ Rd7 44.Qf8+ Kc7 45.Rb1 Nb6 46.Qc5+ Kb7 47.Qxa5 a6 48.h5 Ka7 49.Re1 Qd6 50.Rd1 d4 51.Ra1 Nd5 52.Bxd5 Qxd5+ 53.Qxd5 Rxd5 54.h6

2) +2.25 (31 ply) 27...Nc4 28.Qa2 Nxe3 29.Qxe2 Nxd1 30.Qa6+ Kd7 31.c6+ Qxc6 32.Rb7+ Qxb7 33.Qxb7+ Ke8 34.Bf3 Rg5+ 35.Kf1 Nxc3 36.Qc6+ Rd7 37.Qc8+ Ke7 38.Qxc3 Kd8 39.Kf2 Re5 40.Qb3 Ke7 41.Qb8 a4 42.Qb4 a5 43.Qxa4 Rb7 44.h4 Rb4 45.Qc6 Rc5 46.Qa8 a4 47.Qg8 Rb2+ 48.Kg3 a3 49.Qxg7+ Ke8 50.Qf6

= = = = = = =

<27...Rxc5 28.Bxc5 Nc4 29.Qa2 Qxc5+>


click for larger view

White to move

1) +0.97 (32 ply) 30.Rd4 e5 31.Qxe2 exd4 32.cxd4 Qxd4+ 33.Kh1 Nb6 34.e5 d5 35.Qh5 a4 36.e6 Qf6 37.Re1 g6 38.Qh7 Qc3 39.Rf1 Qc7 40.Qxg6 Kb8 41.h4 Qe5 42.h5 a3 43.Qg3 Qxg3 44.hxg3 Kc7 45.e7 Re8 46.Ra1 Kd6 47.Rxa3 Rxe7 48.Kh2 Ke5 49.Rd3 Rh7 50.g4 Kf4 51.Rd4+ Ke5 52.Rd1 d4

2) -1.24 (31 ply) 30.Kh1 Bxd1 31.Rxd1 Kd7 32.Qb3 Ne5 33.Rg1 Qb6 34.Qa2 Qe3 35.Bf1 Qf3+ 36.Qg2 Qxg2+ 37.Rxg2 Kc6 38.Rxg7 Nd7 39.Bc4 Nc5 40.Rxa7 a4 41.Re7 Nxe4 42.Rxe6 Nxc3 43.Re3 d5 44.Rxc3 dxc4 45.Rxc4+ Kb5 46.Rc7 a3 47.Ra7 Rd1+ 48.Kg2 Rd2+ 49.Kf3 a2 50.Ke3 Rxh2

all 6.0 minute analysis by Stockfish 9 v010218

Sep-12-18  cwcarlson: Thanks.
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