[Csaba B. Stenge]

Boris,

He was not a sport flyer, but a military one. He was born in 1905 and graduated in the military academy as an artillery officer in 1927. He got his flying training from 1930 and later graduated in the Technical University as well and became an engineer. He was the founder and commander of the RKI (as a strong and very talented officer). After the war he went to Canada and passed away in Montreal in 1978.

Seems to me that he is the second pilot from right (it is not 100% sure).