diff --git a/package.json b/package.json
index 261908dea5..ec0534e91a 100644
--- a/package.json
+++ b/package.json
@@ -50,6 +50,7 @@
     "passport-oauth": "^1.0.0",
     "passport-twitter": "^1.0.2",
     "request": "^2.44.0",
+    "sitemap": "^0.7.4",
     "socket.io": "^1.1.0",
     "stripe": "^2.8.0",
     "tumblr.js": "^0.0.4",
diff --git a/views/partials/challenges.jade b/views/partials/challenges.jade
index 7cd30327f0..7554b2841b 100644
--- a/views/partials/challenges.jade
+++ b/views/partials/challenges.jade
@@ -35,52 +35,52 @@
             li
                 a(href="/challenges/15", class="#{ cc.indexOf(15) > -1 ? 'strikethrough' : '' }") Get Help The Hacker Way with RSAP
             li
-                a(href="/challenges/17", class="#{ cc.indexOf(17) > -1 ? 'strikethrough' : '' }") Stanford's Introduction to Computer Science
+                a(href="/challenges/16", class="#{ cc.indexOf(16) > -1 ? 'strikethrough' : '' }") Stanford's Introduction to Computer Science
             li
-                a(href="/challenges/16", class="#{ cc.indexOf(16) > -1 ? 'strikethrough' : '' }") Easy Algorithm Scripting Challenges on Coderbyte
+                a(href="/challenges/17", class="#{ cc.indexOf(17) > -1 ? 'strikethrough' : '' }") Easy Algorithm Scripting Challenges on Coderbyte
             li
-                a(href="/challenges/19", class="#{ cc.indexOf(19) > -1 ? 'strikethrough' : '' }") Stanford's Relational Databases Mini-course
+                a(href="/challenges/18", class="#{ cc.indexOf(18) > -1 ? 'strikethrough' : '' }") Stanford's Relational Databases Mini-course
             li
-                a(href="/challenges/23", class="#{ cc.indexOf(23) > -1 ? 'strikethrough' : '' }") Stanford's SQL Mini-course
+                a(href="/challenges/19", class="#{ cc.indexOf(19) > -1 ? 'strikethrough' : '' }") Stanford's SQL Mini-course
             li
                 a(href="/challenges/20", class="#{ cc.indexOf(20) > -1 ? 'strikethrough' : '' }") Stanford's JSON Mini-course
             li
-                a(href="/challenges/18", class="#{ cc.indexOf(18) > -1 ? 'strikethrough' : '' }") Medium Algorithm Scripting Challenges on Coderbyte
+                a(href="/challenges/21", class="#{ cc.indexOf(21) > -1 ? 'strikethrough' : '' }") Medium Algorithm Scripting Challenges on Coderbyte
             li
-                a(href="/challenges/24", class="#{ cc.indexOf(24) > -1 ? 'strikethrough' : '' }") Build an Interview Question Machine
+                a.disabled(href="/challenges/22", class="#{ cc.indexOf(22) > -1 ? 'strikethrough' : '' }") Build an Interview Question Machine
             li
-                a(href="/challenges/21", class="#{ cc.indexOf(21) > -1 ? 'strikethrough' : '' }") Build a Text-based Adventure
+                a.disabled(href="/challenges/23", class="#{ cc.indexOf(23) > -1 ? 'strikethrough' : '' }") Build a Text-based Adventure
             li
-                a(href="/challenges/22", class="#{ cc.indexOf(22) > -1 ? 'strikethrough' : '' }") Hard Algorithm Scripting Challenges on Coderbyte
+                a.disabled(href="/challenges/24", class="#{ cc.indexOf(24) > -1 ? 'strikethrough' : '' }") Hard Algorithm Scripting Challenges on Coderbyte
             li
-                a(href="/challenges/25", class="#{ cc.indexOf(25) > -1 ? 'strikethrough' : '' }") Code School's Try Git
+                a.disabled(href="/challenges/25", class="#{ cc.indexOf(25) > -1 ? 'strikethrough' : '' }") Code School's Try Git
             li
-                a(href="/challenges/26", class="#{ cc.indexOf(26) > -1 ? 'strikethrough' : '' }") Install Node.js
+                a.disabled(href="/challenges/26", class="#{ cc.indexOf(26) > -1 ? 'strikethrough' : '' }") Install Node.js
             li
-                a(href="/challenges/27", class="#{ cc.indexOf(27) > -1 ? 'strikethrough' : '' }") Clone a Github Repo
+                a.disabled(href="/challenges/27", class="#{ cc.indexOf(27) > -1 ? 'strikethrough' : '' }") Clone a Github Repo
             li
-                a(href="/challenges/28", class="#{ cc.indexOf(28) > -1 ? 'strikethrough' : '' }") Deploy an app to Heroku
+                a.disabled(href="/challenges/28", class="#{ cc.indexOf(28) > -1 ? 'strikethrough' : '' }") Deploy an app to Heroku
             li
-                a(href="/challenges/29", class="#{ cc.indexOf(29) > -1 ? 'strikethrough' : '' }") Code School's Real-time web with Node.JS
+                a.disabled(href="/challenges/29", class="#{ cc.indexOf(29) > -1 ? 'strikethrough' : '' }") Code School's Real-time web with Node.JS
             li
-                a(href="/challenges/30", class="#{ cc.indexOf(30) > -1 ? 'strikethrough' : '' }") Try MongoDB
+                a.disabled(href="/challenges/30", class="#{ cc.indexOf(30) > -1 ? 'strikethrough' : '' }") Try MongoDB
             li
-                a(href="/challenges/31", class="#{ cc.indexOf(31) > -1 ? 'strikethrough' : '' }") Explore your Network with the LinkedIn API
+                a.disabled(href="/challenges/31", class="#{ cc.indexOf(31) > -1 ? 'strikethrough' : '' }") Explore your Network with the LinkedIn API
             li
-                a(href="/challenges/32", class="#{ cc.indexOf(32) > -1 ? 'strikethrough' : '' }") Build your first API
+                a.disabled(href="/challenges/32", class="#{ cc.indexOf(32) > -1 ? 'strikethrough' : '' }") Build your first API
             li
-                a(href="/challenges/33", class="#{ cc.indexOf(33) > -1 ? 'strikethrough' : '' }") Aggregate Data with Chron Jobs and Screen Scraping
+                a.disabled(href="/challenges/33", class="#{ cc.indexOf(33) > -1 ? 'strikethrough' : '' }") Aggregate Data with Chron Jobs and Screen Scraping
             li
-                a(href="/challenges/34", class="#{ cc.indexOf(34) > -1 ? 'strikethrough' : '' }") Code School's Shaping up with Angular.JS
+                a.disabled(href="/challenges/34", class="#{ cc.indexOf(34) > -1 ? 'strikethrough' : '' }") Code School's Shaping up with Angular.JS
             li
-                a(href="/challenges/35", class="#{ cc.indexOf(35) > -1 ? 'strikethrough' : '' }") Reverse Engineer SnapChat
+                a.disabled(href="/challenges/35", class="#{ cc.indexOf(35) > -1 ? 'strikethrough' : '' }") Reverse Engineer SnapChat
             li
-                a(href="/challenges/36", class="#{ cc.indexOf(36) > -1 ? 'strikethrough' : '' }") Reverse Engineer Reddit
+                a.disabled(href="/challenges/36", class="#{ cc.indexOf(36) > -1 ? 'strikethrough' : '' }") Reverse Engineer Reddit
             li
-                a(href="/challenges/37", class="#{ cc.indexOf(37) > -1 ? 'strikethrough' : '' }") Reverse Engineer Pintrest
+                a.disabled(href="/challenges/37", class="#{ cc.indexOf(37) > -1 ? 'strikethrough' : '' }") Reverse Engineer Pintrest
             li
-                a(href="/challenges/38", class="#{ cc.indexOf(38) > -1 ? 'strikethrough' : '' }") Help a Nonprofit: Team Project
+                a.disabled(href="/challenges/38", class="#{ cc.indexOf(38) > -1 ? 'strikethrough' : '' }") Help a Nonprofit: Team Project
             li
-                a(href="/challenges/39", class="#{ cc.indexOf(39) > -1 ? 'strikethrough' : '' }") Help a Nonprofit: Solo Project
+                a.disabled(href="/challenges/39", class="#{ cc.indexOf(39) > -1 ? 'strikethrough' : '' }") Help a Nonprofit: Solo Project
             li
-                a(href="/challenges/40", class="#{ cc.indexOf(40) > -1 ? 'strikethrough' : '' }") Crack the Coding Interview
\ No newline at end of file
+                a.disabled(href="/challenges/40", class="#{ cc.indexOf(40) > -1 ? 'strikethrough' : '' }") Crack the Coding Interview
\ No newline at end of file