Problem 11
Problem 11Teichmann - NN, Zurich 1920
| a | b | c | d | e | f | g | h | ||
| 8 | 8 | ||||||||
| 7 | 7 | ||||||||
| 6 | 6 | ||||||||
| 5 | 5 | ||||||||
| 4 | 4 | ||||||||
| 3 | 3 | ||||||||
| 2 | 2 | ||||||||
| 1 | 1 | ||||||||
| a | b | c | d | e | f | g | h |
Neishtadt's "Leçons de tactique" gives: "1.Rxh6!! the g pawn will be helped by the h pawn 1...Nxh6 (1...Rxh6 2.Bxf7+ Kxf7 3.g8Q+) 2.Qg5 Nf7 3.Qd8+!! Nxd8 4.h6 and there is nothing to prevent h6-h7+ 1-0"
But 4...Qd4!! 5.h7+ Kf7 6.g8Q+ Ke7 7.h8Q Kd6 8.Rg7 Qxd2!! 9.Qxd8 Qd1+! (if 9...Kc5? 10.Rxd7 Bxd7 11.Qxa8 Kb4 12.Qh1! and White wins. Not 12.Qxa7? Qe1+ 13.Kb2 Qc3+ with perpetual check.) 10.Kb2 Qd4+ 11.Ka3 Qc5+ 12.b4 Qe3+ 13.Bd3 Qc1+ 14.Kb3 Qb1+ 15.Kc3 Qe1+ 1/2 as White cannot escape the black checks.
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