CREATE TABLE table_56166 ("Date" TEXT, "Competition" TEXT, "Venue" TEXT, "Result" TEXT, "Score" TEXT, "Goals" TEXT)

Which competition has a Goal of deacon 10/10, and a Score of 40 12?
SELECT "Competition" FROM table_56166 WHERE "Goals" = 'deacon 10/10' AND "Score" = '40–12'
SELECT "Competition" FROM "table_56166" WHERE "Goals" = 'deacon 10/10' AND "Score" = '40–12'