<The son of a journalist and publisher Leo (Leyba) Vints (1876-1952), a native of Glukhov , a member of a number of periodicals of the Zionist orientation in Hebrew and German , publisher of the journal "Ost und West". He studied at the unorthodox Jewish boarding school in Halberstadt .>

and a bit vague

<In the 1960s he stopped participating in competitions. [5] The last few years he lived in Nice , he died in the 1970s.>

https://de.wikipedia.org/wiki/Ost_u...

Complete digitalisied issues: http://sammlungen.ub.uni-frankfurt....

BERLIN, (JTA ) — A West German businessman was given a three-month suspended sentence this week after being found guilty of making anti-Semitic remarks during a chess tournament in a Berlin cafe in June 1960. The businessman, Karl Doernte, 64, was convicted on charges of having told Viktor Winz, a Jew, "The air is polluted in here. Why don't you get back to the gas chamber?"

I see that Viktor Winz is mentioned in a virtual tour <Berlin 1960> in the book <Berliner Schachlegenden> written by Michael Dombrowsky (starting on page 11)

<Who is Victor Winz really? The narrator, an university professor of Hispanic literature and a novelist, passionate about chess and, for some time now, running marathons, tries to reconstruct the uncertain history of this German Jew, also a chess player, whom he met in Nice in the seventies, establishing with him, especially after his death, a strange master-disciple relationship. Chess thus becomes the guiding thread of their own trajectories, marked by a unique, insistent and paradoxical question: how to learn not to play chess? The attempt to reconstruct the fuzzy past of his master leads the narrator to Berlin, Tel Aviv and Buenos Aires. To do this, in a Buenos Aires dream atmosphere, he will obtain the ghostly help of the Polish writer Witoldo Gombrowicz, who met Winz at the beginning of his Buenos Aires exile in 1939, and of a Uruguayan witch named Cesaira. His inquiries will take him, surprisingly, to the mysterious murders of four Nazi refugees in Argentina during Peronism, with whom Winz's life seems to intertwine. But tracking down someone may be nothing more than a barely concealed form of tracking himself. Reason why the narrator will be doomed, progressively, to remember those years of his childhood, in which he lived with a German businessman whose father was the driver, whose past refers to a postwar Barcelona where some Nazis also found, first joyous welcome, then protection and refuge. Turning your back is an exciting and intelligent novel, sarcastic at times, as perfectly measured as a grandmaster game of chess. His surprising plot unbalances the reader and leaves him breathless from the first line until the end of that initiatory journey in search of Winz, in which Bonells boasts an unusually rich, agile and fluid prose.>

All names are shown with the spelling used in these documents.

The correct date of birth is 31 August 1901, Berlin.

The registered name: Victor Gitelewitz.

The birth was registered by the University Women's Hospital, on behalf of Katharina Gitelewitz (born Aptekar), who claimed to be the wife of a medical doctor, Adolf Gitelewitz, both resident in Kharkov, Russia.

In 1911 there was a court ruling on a correction: that the mother of Victor Giteliowitsch is the unmarried Katharina Giteliowitsch (did she make up the story about being married, or did she and Adolf divorce? No records found). 

In 1914 there was another court ruling that:
that the boy Victor is the marital child of Katharina Gderljeiwna Winz born Gitelevich and her husband, the chief editor Leiba (Leo) Winz.

(daß der Knabe Victor das eheliche Kind der Katharina Gderljeiwna Winz geborene Gitelewitsch und ihres Ehemannes, des Chef-Redakteurs Leiba (Leo) Winz ist.) 

No details of a marriage between Katharina and Leo have been found.

In 1932 Viktor Winz married Ester Renée Majzeles, born 28 June 1912, Visegrad, Bosnia. 

<NOTES>
The incorrect date of birth 31 August 1906 was likely taken from Winz's 1954 visa for Brazil (I have a copy of the card). It is not known whether a false DOB was proffered by Winz, or whether it was an administration error. Interestingly, his mother is named on that document as Katalina.

On the list of European chess masters who sailed to the Buenos Aires 1939 Olympiad on the Piriapolis, his correct age is shown as 37. The ship docked on 21 August 1939, ten days before his 38th birthday.

<CHESS EVENTS>
The 1957 Berlin Championship was not the last event in which Winz played. He also participated in tournaments organised by his club, Wilmersdorf, and continued to play in club matches and other local Berlin events into at least the early 1960s. (His name appears in various issues of the newsletter issued by the Berliner Schachverbandes.)

Winz was one of those who lost to Tal in a 10-board simultaneous exhibition, with clocks, in Berlin on 14 November 1960.