Results:
1. Znosko-Borovsky 13.5/17
2. Oscar Blum 13/17
3-4. Cukiermann and Rossolimo 12/17
5. Raizman 11.5/17
6-7. Halberstadt and Romi 10.5/17

The cross-table: http://heritageechecsfra.free.fr/pa...

[Event "Paris championship"]
[Site "Paris"]
[Date "1931.??.??"]
[Round "?"]
[White "Romi, Massimilian"]
[Black "Blum, Oscar"]
[Result "0-1"]
[ECO "A47"]
[PlyCount "86"]
[Source "'Le Temps', January 2, 1932, p. 4"]

1. d4 Nf6 2. Nf3 e6 3. g3 b6 4. Bg2 Bb7 5. O-O Be7 6. b3 O-O 7. Bb2 d6 8. Nbd2 Nbd7 9. c4 d5 10. Ne5 c5 11. Rc1 cxd4 12. Bxd4 Nxe5 13. Bxe5 Nd7 14. Bc3 Nc5 15. Qc2 d4 16. Bb4 Bxg2 17. Kxg2 Qc7 18. Bxc5 bxc5 19. Qe4 a5 20. f4 Ra6 21. Rf3 Rd8 22. Rcf1 a4 23. h4 axb3 24. axb3 Ra2 25. Rd3 Qa5 26. Nf3 Qa8 27. Nd2 Qxe4+ 28. Nxe4 Rxe2+ 29. Kf3 Ra2 30. Rfd1 Rb8 31. Rb1 f5 32. Nd2 Bf6 33. g4 Bxh4 34. b4 Rxb4 35. Rxb4 cxb4 36. Rxd4 Be1 37. c5 Bxd2 38. c6 fxg4+ 39. Kxg4 Bxf4 40. Kxf4 Rc2 41. Rd8+ Kf7 42. Rd7+ Kf6 43. Rc7 b3 0-1

Sources: "Le Temps", November 1, 1931, p. 6; "Le Temps", January 2, 1932, p. 4; "Le Temps", January 10, 1932, p. 4.

In 1932 Oscar Blum won the title of Paris Championship. There was an unusual scoring system used - 3 points for a win, 2 for a draw, 1 for a loss and 0 for a game forfeited by absence.

1. Znosko-Borovsky 8.5/11
2. Blum 8/11
3. Conde 7.5/11
4-5. Golombek and Zeitz 6.5/11
6.Bankroft 5.5/11

Tournament table (archived by me from www.rogerpaige): https://www.dropbox.com/s/ah9owcwux...

Detailed results: "Folkestone, Hythe, Sandgate & Cheriton Herald", June 24, 1933, p. 17; https://www.dropbox.com/s/00rmb537d...

Other sources:
"Wiener Schach-Zeitung", Nr. 13/14 1933, p.195; "The Glasgow Herald", June 24, 1933;

Results:
1. H. Grob 4/5
2-3. Dr. Seitz and Dr. Blum 3/5
4-5. Camponovo and Muller 2/5
6. Heussler 1/5

Torneo Internacional de Ajedrez del Madrid F.C. 1936:

https://www.ajedrez365.com/2013/06/...

I Campeonato de España por Equipos 1956:

https://www.ajedrez365.com/2014/11/...

In February 1936 in Lisbon, he played several exhibition games.

[Event "Exhibition game"]
[Site "Lisbon"]
[Date "1936.02.??"]
[Round "?"]
[White "Machado & colsuntants"]
[Black "Blum, Oscar"]
[Result "1/2-1/2"]
[ECO "A43"]
[PlyCount "78"]
[Source "https://www.ajedrez365.com/2013/06/..."]

1. d4 c5 2. d5 g6 3. e4 Bg7 4. f4 d6 5. Nf3 Nf6 6. Nc3 O-O 7. Be2 b5 8. e5 dxe5 9. fxe5 Ng4 10. Bf4 a6 11. h3 Nh6 12. Qd2 Nf5 13. g4 Nd4 14. Nxd4 cxd4 15. Qxd4 Nc6 16. Qe3 b4 17. dxc6 bxc3 18. Qxc3 Be6 19. Qc5 Qd5 20. Qxd5 Bxd5 21. O-O Bxc6 22. Bc4 Bb5 23. Bxb5 axb5 24. a3 Rfc8 25. c3 Rc5 26. Rfe1 e6 27. Re4 Rd5 28. Rd4 Rxd4 29. cxd4 Ra4 30. Rc1 f5 31. Be3 b4 32. Rc4 Bf8 33. Bc1 Kf7 34. b3 Ra7 35. a4 Be7 36. g5 Ke8 37. Kf2 Kd7 38. Kf3 Ra6 39. Bd2 Rc6 1/2-1/2

In April 1936 Oscar Blum visited in Saragossa. As a preparation for an international Madrid chess tournament, he played a match with Dr. R. Rey Ardid, who became the Spanish Chess Champion in 1929 and retained this title for 13 years. Ardid won this match 2.5:1.5. (El Sol, April 14, 1936, p. 9).

The correspondent of Madrid newspaper "El Sol" met Oscar Blum on the Madrid train station to be first to interview him about the match with Ardid.

It was published in "El Sol", April 17, p. 5:

"Madrid had great interest in a match between the Spanish and Parisian chess champions and often I was asked by friends and chess fans, 'What do you know about the match in Zaragoza?' Yesterday, I was lucky enough to meet Oscar Blum arriving in Madrid at the train station. I became the first lucky one to be able to talk to him, and I give report to El Sol readers, because no other Madrid newspaper can boast so much success. While asked about the match in Zaragoza, the charming Paris Chess Champion, like a true jellyfish, said brilliantly: 'I had the misfortune to meet him in an excellent form of sport, supplemented by the deep knowledge of chess he acquired while playing chess in correspondence. For me it was a great workout game with a strong and swift opponent.' His defeat in the match with Dr. R. Rey Ardid with a minimum score of 1.5: 2.5 he explained by the high level of the partner's game."

International tournament organized by "Madrid FC" (Madrid football club) was held from May 15 to May 23, 1936.

<Jean Defuse> already provided link to the source of detailed information of this tournament: https://www.ajedrez365.com/2013/06/...

In 2014 I started my research about Dr. Oscar Blum.

Some articles related to the "Madrid F.C. 1936" tournament were archived by me:

"El Sol", May 26, p. 19.
https://www.dropbox.com/s/0l8vmfj3e...

"ABC" magazine, May 23, 1936, p. 53.

https://www.dropbox.com/s/0obpgnjt2...

In May 2018, before page of Oscar Blum was created, I posted articles about this mysterious chess master on the page of Josef Cukierman.
I'm repeating them here, on the page where they belonging.

Oscar Blum was presented as a Lithuanian citizen by the organizers of Paris championship.
http://heritageechecsfra.free.fr/bl...

The most recent evidence of the fate of Blum social democrat was in the article "In Vienna arrested Bolshevik journalist" published in the Latvian newspaper in Russian language "Сегодня" ("Tuday"), 21 January 1930, p.5.

"In Vienna arrested Bolshevik journalist.
According to the "Neues Wiener Journal", in one of Vienna's hotels, recently arrested Dr. Oskar Blum, who calls himself a Russian writer and declared that he was born in St. Petersburg, and that he was 42 years. Blum owed Hotel 300 shilling and fled, taking some of their things. The porter of the hotel discovered the disappearance of Blum, went to Vienna train stations and really on one of them caught Blum at the moment when he boarded the train. Porter brought Blum back to the hotel, where he was arrested. According to the Vienna newspaper, Blum contributed to the Bolshevik publications."

The same pattern of behavior was typical for the Dr. Oscar Blum chess player. (The articles in "Daily Record", October 3rd 1933, p. 7, "Belfast-News Letter" and in Folkestone, Hythe, Sandgate & Cheriton Herald, October 7, 1933, p. 8 and "Western Daily Press, 3 October 1933, p. 11).

<MissScarlett>
<Hmmm, I was sceptical, but it's looking increasingly likely they are one and the same.

<Both allegedly born in St. Petersburg, both reportedly with a connection to Latvia, and the ages of 42 and 45 tie in neatly.>
<Western Daily Press, 3 October 1933, p11>

Which includes the pertinent information that Blum had been ordered to leave France by April of that year, according to the Scotland Yard officer at his trial.

Which suggests that Blum's main motivation for entering the Folkestone tournament was to avoid being deported back to the Soviet Union or Latvia or Lithuania or wherever. Was he intending to stay in Britain permanently? And where did he end up? Spain?>

<MissScarlett> Your observation looking me consistently with my understanding of this matter.

The historical research about Dr. Oscar Blum social-democrat (https://ru-history.livejournal.com/...) mentioned differences in publications about his bio, including different date of birth.

In 1923 he was deported from Russia.
In January 1923 he was already in Berlin.
In 1923 he published a book «Russische Köpfe», with not pleasant characteristics of a number of figures of the Russian revolution. In 1927 he was living in Berlin, but since then nothing is known about him.

In 1925 Dr. Oscar Blum, chess player, was touring Northern Italy, populated with German speaking population. He was making simultaneous displays and lectures in small towns. ("Meraner Zeitung", February 5, 1925, p. 5, "Meraner Zeitung", February 10, 1925, p. 4, "Der Tiroler", February 6, 1925, "Der Tiroler", February 25, 1925).

In 1936 Blum made a tour in Portugal and Spain, playing simultaneous displays in Lisbon, Cadiz, Seville and Madrid. "Que fue campeón de París en 1932 y que, aparte, dio simultáneas en Lisboa -una de ellas la hemos visto más arriba-, Sevilla, Cádiz y Madrid, con un gran resultado, probando que Blum era un jugador con una notable categoría." He participated in "Madrid FC-1936" International tournament, wher he was 2nd, after Koltanowski.