CREATE TABLE table_10134 ("Home team" TEXT, "Home team score" TEXT, "Away team" TEXT, "Away team score" TEXT, "Venue" TEXT, "Crowd" FLOAT, "Date" TEXT)

What was the smallest crowd during a game where the home team scored 12.9 (81)?
SELECT MIN("Crowd") FROM table_10134 WHERE "Home team score" = '12.9 (81)'
SELECT MIN("Crowd") FROM "table_10134" WHERE "Home team score" = '12.9 (81)'