CREATE TABLE table_203_636 (id DECIMAL, "#" DECIMAL, "date" TEXT, "winner" TEXT, "score" TEXT, "location" TEXT, "notes" TEXT)

which game date had the highest winning score ?
SELECT "date" FROM table_203_636 ORDER BY "score" DESC LIMIT 1
SELECT "date" FROM "table_203_636" ORDER BY "score" DESC NULLS LAST LIMIT 1