CREATE TABLE table_29840 ("Game" FLOAT, "Date" TEXT, "Team" TEXT, "Score" TEXT, "High points" TEXT, "High rebounds" TEXT, "High assists" TEXT, "Location Attendance" TEXT, "Record" TEXT)

Name the high rebounds for 81 game
SELECT "High rebounds" FROM table_29840 WHERE "Game" = '81'
SELECT "High rebounds" FROM "table_29840" WHERE "Game" = '81'