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Viktor Korchnoi vs Lev Aronin
USSR Championship (1952), Moscow URS, rd 15, Dec-20
Caro-Kann Defense: Two Knights Attack (B10)  ·  1-0



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Kibitzer's Corner
May-13-11  aniceto: very instructive endgame technique
Premium Chessgames Member
  zydeco: Black should be slightly better at the start of this endgame. 30....Kg7 is incomprehensible.
Premium Chessgames Member

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In this position, Aronin should have returned his King to e6, waiting. If Korchnoi tries 50..Ke6 51 Rd4 (51 Rc5 Rf1; 51 Ka5 Kf5) then Black always has an effective waiting move: 51..Kf5! 52 c4 a3 53 Kb3 Kg4!

50..Kd7 was not so good because it allows the f-pawn to advance.

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54 f5! Ke7 55 Rc6 Ra1 56 f6+ Kf7 57 c4 a3 58 Kb4! Kf8 59 Kb3 Kf7 60 Rd6 Rc1 61 Rd4! forces a well-known winning position.

Korchnoi didn't go for it though and played 54 Ka5 giving Aronin another change to put his King on e6 to guard the f-pawn. Sadly though he chose 54..Kd6? again allowing 55 f5! since 55..Ke5 56 Rc5+ Kd6 56 f6! Korchnoi opted to repeat the position before putting the f5 idea on the board.

Towards the end there is a nice King-on-King shoulder-barge:

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59 Kb6! Rf3 60 Rc4 Rxf5 61 Rd4+ and here Aronin played 6there are generally a few more chances keeping the defending King on the 3rd or 4th rank and so 61..Ke5 was worth a punt. Now 61 Rd8 (controlling the 8th rank) 61..Rf4 (stopping the c-pawn advancing) 62 Kb5 Ke6 (waiting) 62 c4 Ke7 63 Rd1 Rf8 64 c5 Rb8+ 65 Ka6 Rc8 66 Kb6 reaches another well-known won position.

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