Ian,
It's certainly not a common surname.
I searched for its occurrence as a surname. I didn't find any sign or suggestion of variant spellings. Other than learning that (I presume) you participated in a chess tourney about 6 years ago

, there were not a lot of usages to be found and this is essentially the full compilation:
it did not appear in the 1920 US census;
it appears in Poland as the surname of only 9 persons, principally in the County of Slupca - see
here [moikrewni.pl];
it is the surname of a woman in France, insurance industry;
it is the surname of a man, probably in Greece;
it is the surname of 2 persons/families, in Winnipeg, MB;
it is the maiden surname of 1 woman in Winnipeg, originally from St John, NF (married name Funk);
it is the maiden surname of 1 woman from NF (married name Winsor);
it is the surname of a family in Madison, WI (formerly of UT and CA);
it is the surname of a woman in Toronto, ON, computer industry (no current listing however);
it is the surmame of a man/family in St John, NL;
it is the surname of a woman in Brooklyn, NY;
it is the surname of a woman from Oromocto, NB (no current listing however);
it is the surname of a male actor (probably Canadian) with one TV series episode credit;
it is the surname of a Muslim woman in Iran;
it is the surname of a man in Mexico; and,
it is the surname of a number of folks on FB - those appear to be roughly equally divided between Manitoba and Iran.
Other than as a surname, it shows up as (in no particular order):
a placename (I think) in StarWars;
an Iranian web provider;
a hostel in The Netherlands;
an Egyptian god;
a heavenly body (star or planetary, can't remember which);
a tour agency in Egypt;
an on-line RPG character/place;
a web hosting/design company in Luxembourg;
a heavy metal band in Egypt;
a placename in the Czech Republic;
a placename in Germany;
a champion showdog in Hungary;
a champion showdog in Denmark;
a furniture design company in Malaysia;
a nick used by a (pretty good) pro photographer, who appears to be from Europe; and,
a random username on any number of different on-line sites - most seemingly inspired by either its RPG, Egyptian mythological, or StarWars connections.
All told, I'd guess that Slupca, Poland is most likely your family's place of origin and that the vast majority of those who emigrated did so to Canada - principally to the Maritimes and Manitoba (although I obviously didn't do a place by place search of
CanPages People Directory [canpages.ca], I did hit a few random metro areas and all listings appear to be limited to NL and MB presently).
Hope this helps.
Many years,
Neil
PS - should you want to explore any of these as possible long-lost relatives, let me know. I'm pretty certain that I can find most of them again.