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Carl Friedrich von Jaenisch
Number of games in database: 65
Years covered: 1838 to 1868
Overall record: +21 -32 =12 (41.5%)*
   * Overall winning percentage = (wins+draws/2) / total games
      Based on games in the database; may be incomplete.

MOST PLAYED OPENINGS
With the White pieces:
 King's Gambit Accepted (11) 
    C33 C39 C34 C35
With the Black pieces:
 Giuoco Piano (8) 
    C53 C50 C54
 King's Gambit Accepted (7) 
    C39 C33 C35 C37
 King's Pawn Game (5) 
    C44
 Petrov (4) 
    C43 C42
Repertoire Explorer

NOTABLE GAMES: [what is this?]
   Shumov vs Jaenisch, 1854 0-1
   Jaenisch vs Shumov, 1854 1/2-1/2
   Shumov vs Jaenisch, 1845 0-1
   Jaenisch vs Mongredien, 1851 1-0

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CARL FRIEDRICH VON JAENISCH
(born Apr-11-1813, died Mar-07-1872, 58 years old) Russia

[what is this?]
Carl Friedrich Andreyevich von Jaenisch was born in Vyborg*. A major in the Russian army in 1838, he started writing a book on chess openings and two years later left the army to concentrate full-time on the task. After four years he published 'Analyse nouvelle des ouvertures du jeu des echecs' in 1842-43. This work together with Paul Rudolf von Bilguer 's 'Handbuch' marked the beginning of modern opening theory.

*Wikipedia article: Vyborg

Wikipedia article: Carl Jaenisch


 page 1 of 3; games 1-25 of 65  PGN Download
Game  ResultMoves Year Event/LocaleOpening
1. Jaenisch vs Kieseritzky 1-022 1838 corrC33 King's Gambit Accepted
2. Kieseritzky vs Jaenisch ½-½50 1838 corrD20 Queen's Gambit Accepted
3. Von Der Lasa vs Jaenisch 1-025 1842 BerlinC43 Petrov, Modern Attack
4. Hanstein vs Jaenisch 1-025 1842 Berlin m1C01 French, Exchange
5. Von Der Lasa vs Jaenisch  1-027 1842 BerlinC39 King's Gambit Accepted
6. Jaenisch vs Von Der Lasa  ½-½35 1842 BerlinA85 Dutch, with c4 & Nc3
7. Hanstein vs Jaenisch  1-039 1842 Berlin m1C01 French, Exchange
8. NN vs Jaenisch 1-027 1842 BerlinC30 King's Gambit Declined
9. Jaenisch vs Von Der Lasa 1-050 1842 BerlinA85 Dutch, with c4 & Nc3
10. Jaenisch vs NN 0-136 1842 BerlinC53 Giuoco Piano
11. Hanstein vs Jaenisch 1-018 1842 BerlinC37 King's Gambit Accepted
12. Von Der Lasa vs Jaenisch 1-041 1842 ?C42 Petrov Defense
13. Von Der Lasa vs Jaenisch 1-020 1842 UnknownC35 King's Gambit Accepted, Cunningham
14. Hanstein vs Jaenisch 1-028 1842 BerlinC31 King's Gambit Declined, Falkbeer Counter Gambit
15. Jaenisch vs Bledow  0-128 1842 BerlinC24 Bishop's Opening
16. Jaenisch vs Von Der Lasa 1-022 1842 UnknownC35 King's Gambit Accepted, Cunningham
17. Jaenisch vs A Petrov  1-034 1844 St PetersburgC40 King's Knight Opening
18. A Petrov vs Jaenisch 1-026 1844 St PetersburgC43 Petrov, Modern Attack
19. Shumov vs Jaenisch 0-118 1845 St PetersburgC53 Giuoco Piano
20. Jaenisch vs Shumov  0-152 1849 UnknownC33 King's Gambit Accepted
21. Shumov vs Jaenisch  0-134 1849 Russia mC77 Ruy Lopez
22. Shumov vs Jaenisch  0-149 1849 UnknownC39 King's Gambit Accepted
23. Jaenisch vs Shumov 0-128 1850 RussiaB20 Sicilian
24. Wallenrath vs Jaenisch  ½-½32 1850 St PetersburgC23 Bishop's Opening
25. Jaenisch vs Shumov 1-044 1850 RussiaB20 Sicilian
 page 1 of 3; games 1-25 of 65  PGN Download
  REFINE SEARCH:   White wins (1-0) | Black wins (0-1) | Draws (1/2-1/2) | Jaenisch wins | Jaenisch loses  

Kibitzer's Corner
Mar-30-04  Eatmysacs: Jaenisch is a fascinating player. His risky behavior over the board spawned some very interesting gambits today, including the Jaenisch Gambit, 1. c4 b5. Also the Schliemann-Jaenisch Gambit, 1. e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Nc3 fxe4 5.Nxe4 d5 6.Ne5 dxe4 7.Nxc6.
May-25-04  tacticsjokerxxx: True.. 1.c4-b5! is an underrated response to 1.c4, 1.c4 works so well because people haven't figured out that -b4 is the correct response yet.
May-25-04
Premium Chessgames Member
  AgentRgent: I looked at 1.c4 b5 quite a bit as a possible response to the English. I play the Benko against 1.d4 and thought play would be similar (Actual transposition is possible, but unlikely). I found that even though black has similar play on the queenside, the lack of the pawn on d5 was actually a benefit to white.
May-25-04  Lawrence: <tacticsjokerxxx>, "people haven't figured out that -b4 is the correct response yet." That's not surprising.
Oct-02-04  Knight13: He had a bad Loss against NN since 1842. But his attacking strategy is well played.
Oct-02-04  fgh: 1 c4 b5 doesn't seem very usefull to me.
Oct-03-04  Kean: First time I hear about the 1.c4 b5 gambit, I guess the idea could be a bishop on b7 , pawn on d5 and the rapid sizing of e4.
Dec-11-04  DanielBryant: Anybody here ever used it?
Nov-05-05  royspeck: I played the Jaenisch variation of the Evans gambit against an advanced player. I won the game with a powerful attack. I would suggest an example of this variation should be put in Jaenisch games.
Aug-11-06  BIDMONFA: Carl Friedrich Von Jaenisch

JAENISCH, Carl
http://www.bidmonfa.com/jaenisch_ca...
_

Sep-15-06  FHBradley: The biographical data on Jaenisch is (are?) slightly misleading. Technically speaking, if I may put it this way, he was Russian, but in fact he was (and always regarded himself as) a Finn. Anyone with knowledge of the Finnish language can easily figure out the linguistic origin of his surname.
Sep-15-06  moppa: Oh, he was a Finn? (Finland wasn't actually an independent country back then) I didn't recognize that from the name - but now when I know it, it's propably written Jänis (a with dots is often replaced with ae)in Finnish. Jänis is a rabbit in english. However, Carl Friedrich isn't very Finnish name, altough there were quite a few Swedish-sound names in the 1800's
Oct-25-07  melianis: Vyborg was quite a mix of nationalities back then, finns, karelians, swedes russians, germans, estonians, tatars, others. Nice to know that he regarded himself a finn.
Feb-12-08  brankat: C.F.Jaenisch's work on openings, together with that of P.R.von Bilguer's ("Handbuch") is regarded as the birth of modern openings' theory.
Feb-12-08  sigi: <brankat>

During the preparation of both books their authors were in close contact. In 1842 Jaenisch visited twice Berlin and analysed openings with von der Lasa:

"Der Austausch meiner Ideen mit dem russischen Gaste geschah weniger contradictorisch in der gespielten Partie, als gemeinsam auf dem theoretischen Gebiete der Eröffnungen. Ich darf wohl behaupten, dass unsere, unter zwei Verfassern gewiss seltene Vereinigung der Forschung, welche durch fortgesetzte Correspondenz seitdem unterhalten worden ist, zu sehr günstigen Resultaten für die Vervollkommnung des Bilguer'schen Werkes und für die Analyse nouvelle, deren erster Band 1842 in Dresden gedruckt wurde, geführt hat."

Source: Lasa's "Berliner Schach-Erinnerungen", page 25.

Feb-12-08  brankat: <sigi> Thank You so much for this information. I've been wondering about it myself.

All 3 were of approximately the same generation, and involved in very similar kind of work, it would have seem natural for them to be in contact.

It was quite fortunate that Mr.v.d.Lasa was not only a very talented master, but also a capable analyst, a far-sighted person. And above a loyal friend to P.R.Bilguer.

We all owe a debt of gratitude to these Pioneers of Chess theories.

Aug-11-09  WhiteRook48: Happy birthday!
Sep-15-10  FHBradley: Happy Birthday Mr. Jänisch! Serving in the Russian army as an engineer-officer, he could retire at the ripe age of thirty, after which he dedicated the rest of his life to chess and mathematics. A nice career.
Apr-11-11  Penguincw: Happy Birthday Carl Friedrich Von Jaenisch!
Apr-11-12  brankat: Happy Birthday!
Oct-22-13
Premium Chessgames Member
  Karpova: The 'British Chess Magazine' Almanac, p. 1, March 1882 claims he died March 17, 1872 and Gaige (p. 191) agrees.
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