Table: venezuelan_football_2005_06
Columns: team
points
played
drawn
lost
against
diff

Question: What is the highest diff with drawn of 6 and play larger than 18?
SQL: SELECT MAX("diff") FROM venezuelan_football_2005_06 WHERE "drawn" = 6 AND "played" > 18

Question: How many games were played when the loss is less than 5 and points greater than 41?
SQL: SELECT SUM("played") FROM venezuelan_football_2005_06 WHERE "lost" < 5 AND "points" > 41