diff --git a/download-problems b/download-problems
index 8fbd82d..8cfcb41 100755
--- a/download-problems
+++ b/download-problems
@@ -40,14 +40,14 @@ end
 
 local = Dir
   .entries(".")
-  .select { |entry| File.directory?(entry) && !entry.match?(/^\./) }
+  .select { File.directory?(_1) && !_1.match?(/^\./) }
 
 browser.goto("https://adventofcode.com/")
 cookies = JSON.parse(File.read("tmp/cookies.json"))
-cookies.each { |cookie| browser.cookies.add(cookie["name"], cookie["value"], domain: cookie["domain"]) }
+cookies.each { browser.cookies.add(_1["name"], _1["value"], domain: _1["domain"]) }
 pre_element = browser.element(tag_name: "pre", class: "calendar")
 doc = Nokogiri::HTML(pre_element.html)
-links = doc.css("a").map { |link| link["href"] }
+links = doc.css("a").map { _1["href"] }
 
 available = links.map { _1.scan(/day\/(\d+)/) }.flatten.map { "%02d" % _1 }