CREATE TABLE table_35943 ("Outcome" TEXT, "Date" TEXT, "Tournament" TEXT, "Surface" TEXT, "Partner" TEXT, "Opponents in the final" TEXT, "Score in the final" TEXT)

For the tournament played on 26 February 2006, what surface was used?
SELECT "Surface" FROM table_35943 WHERE "Date" = '26 february 2006'
SELECT "Surface" FROM "table_35943" WHERE "Date" = '26 february 2006'