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Carl Jaenisch vs Ilya Shumov
unknown m/6 (1854)
King's Gambit: Accepted. Bishop's Gambit Lopez Variation (C33)  ·  1/2-1/2

ANALYSIS [x]

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Kibitzer's Corner
Sep-11-04  mjk: After 46.♘xb3 its a draw.
<-- Nalimov Tablebase Server>
Dec-08-05  blingice: Why not 47. ♘a5?
Dec-08-05  Saruman: Good question.
Feb-08-09  WhiteRook48: obviously White doesn't know the mating process here, but it's 1854
Mar-06-09  David2009: Jaenisch vs Shumov, 1854 is the first recorded NN v P ending. The game was agreed drawn at move 50 with White to play. Black has just played 49... a4-a3 to leave (White) K at e3, Ns at e4,a2 (Black) k at c4, p at a3. The position is drawn but White has winning chances. If Black does not head for the safety of the h8 corner (or more generally the f, g and h files) he can lose. Suppose Black decides to stand his ground, and to try to repeat moves by moving back to his previous square whenever it seems reasonable. The game might then continue 50. Nec3 Kc5 51. Ke4 Kd6 52. Nd5 K5 53. Ne3 Kd6 54. Kf5 Kc5 55. Ke5 Kc6 56. Nf5 Kc5 57. Nd6 Kc6 58. Ne4 Kd7 59. Kf6 Kc6 60. Ke6 Kc7 61. Nf6 Kc6 62. Nd7 Kc7 63. Ne5 Kd8 64. Kf7 Kc7 65. Ke7 Kc8 66. Nf7


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This position is also reachable as a variation from Smyslov vs Lilienthal, 1941 with colours reversed. Suddenly Black is in real danger. 66… Kc8-c7 loses in 33 moves (as shown by Botvinnik in his annotations to the 1941 match-tournament book); Kc8-b8 lasts one move longer; the only move to draw is 66... Kb7. The drawing strategy is to head for b3 via a6, a5 and a4. White can try to prevent this with his King (which allows repetition of moves) or with his N (which allows Black to escape to the h8 corner).

For more analysis, see Game Collection: Two Knights versus Pawn and the various kibitzings of Smyslov-Lilienthal 1941. The Nalimov database can currently be found at http://www.lokasoft.nl/tbweb.htm

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