Die Unsterbliche Zugzwangpartie - Aron Nimzowitsch

1923 gelang es Aron Nimzowitsch bereits im Mittelspiel Friedrich Sämisch in Zugzwang zu stellen. Dieses Taktik ist sonst meist nur im Endspiel anzutreffen.
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►►► PGN
[Event "Copenhagen"]
[Site "Copenhagen, DEN"]
[Date "1923.03.09"]
[EventDate "1923.03.03"]
[Round "6"]
[Result "0-1"]
[White "Friedrich Saemisch"]
[Black "Aron Nimzowitsch"]
[ECO "E18"]
[WhiteElo "?"]
[BlackElo "?"]
[PlyCount "50"]

1. d4 {Notes by Nimzowitsch} Nf6 2. c4 e6 3. Nf3 b6 4. g3 Bb7
5. Bg2 Be7 6. Nc3 O-O 7. O-O d5 8. Ne5 c6 {Safeguards the
position} 9. cxd5 cxd5 10. Bf4 a6 {Protects the oupost station
c4, i.e., by ...a6 and ...b5.} 11. Rc1 b5 12. Qb3 Nc6 {The
ghost! With noiseless steps he presses on towards c4.}
13. Nxc6 {Samisch sacrifices two tempi (exchange of the
tempo-eating Knight on e5 for the Knight which is almost
undeveloped) merely to be rid of the ghost.} Bxc6 14. h3 Qd7
15. Kh2 Nh5 {I could have supplied him with as yet a second
ghost by ...Qb7 and ...Knight-d7-b6-c4, but I wished to turn
my attention to the King's side.} 16. Bd2 f5 {!} 17. Qd1 b4
{!} 18. Nb1 Bb5 19. Rg1 Bd6 20. e4 fxe4 {! This sacrifice,
which has a quite surprising affect, is based upon the
following sober calculation: two Pawns and the 7th rank and an
enemy Queen's wing which cannot be disentangled - all this for
only one piece!} 21. Qxh5 Rxf2 22. Qg5 Raf8 23. Kh1 R8f5
24. Qe3 Bd3 25. Rce1 h6 {!! A brilliant move which announces
the Zugzwang. White has not a move left. If, e.g., Kh2 or g4,
then R5f3. Black can now make waiting moves with his King, and
White must, willy-nilly, eventually throw himself upon the
sword.} 0-1