diff --git a/src/lib/aoc.lua b/src/lib/aoc.lua
index f0b5dd7..80eb68b 100644
--- a/src/lib/aoc.lua
+++ b/src/lib/aoc.lua
@@ -102,6 +102,9 @@ end
 local function main()
     local stats = loadStats("aoc/res/stats.json")
     local selectedDay = math.max(1, math.min(END_DATE.day, today.day))
+    if not dates.isInDateRange(START_DATE, today, END_DATE) then
+        selectedDay = 1
+    end
     
     while true do
         term.clear()
diff --git a/src/lib/days.lua b/src/lib/days.lua
index 58f6172..29e2826 100644
--- a/src/lib/days.lua
+++ b/src/lib/days.lua
@@ -118,24 +118,78 @@ function Day:createFiles()
     end
 end
 
----Displays this day and prompts the user with possible actions
-function Day:show()
+function Day:getExampleData(suffix)
+    return utils.readFile(self:examplePath(suffix))
+end
+
+function Day:getInputData()
+    return utils.readFile(self:inputPath())
+end
+
+function Day:execPuzzle(puzzleI, data)
+    local puzzle = require(self:srcDir() .. "/puzzle" .. puzzleI)
+    local t0 = os.epoch("local")
+    local result = puzzle.solve(data)
+    local t1 = os.epoch("local")
+    print(("(Executed in %.3fs)"):format((t1 - t0) / 1000))
+    print("Result:", result)
+end
+
+function Day:execExample(puzzleI, suffix)
+    local data = self:getExampleData(suffix)
+    return self:execPuzzle(puzzleI, data)
+end
+
+function Day:execReal(puzzleI)
+    local data = self:getInputData()
+    return self:execPuzzle(puzzleI, data)
+end
+
+function Day:choosePuzzle()
+    self:printTitle()
+    local c = utils.promptChoices({"Puzzle 1", "Puzzle 2", "Back"})
+    return c
+end
+
+function Day:printTitle()
     term.clear()
     term.setCursorPos(1, 1)
     term.setTextColor(colors.green)
     print(" -*- [ " .. self:getTitle() .. " ] -*-")
+    term.setTextColor(colors.white)
+end
 
-    if fs.exists(self:srcDir()) then
-        local c = utils.promptChoices({CHOICES.example, CHOICES.real, CHOICES.main})
-        if c == CHOICES.example then
-        end
-    else
-        local c = utils.promptChoices({CHOICES.create, CHOICES.main})
-        if c == CHOICES.create then
-            self:createFiles()
+---Displays this day and prompts the user with possible actions
+function Day:show()
+    while true do
+        self:printTitle()
+        if fs.exists(self:srcDir()) then
+            local c = utils.promptChoices({CHOICES.example, CHOICES.real, CHOICES.main})
+            if c == CHOICES.main then
+                return
+            end
+            local puzzle = self:choosePuzzle()
+            if puzzle ~= "Back" then
+                local puzzleI = ({
+                    ["Puzzle 1"] = 1,
+                    ["Puzzle 2"] = 2
+                })[puzzle]
+                if c == CHOICES.example then
+                    self:execExample(puzzleI)
+                elseif c == CHOICES.real then
+                    self:execReal(puzzleI)
+                end
+                utils.waitForKey(keys.enter)
+            end
+        else
+            local c = utils.promptChoices({CHOICES.create, CHOICES.main})
+            if c == CHOICES.main then
+                return
+            elseif c == CHOICES.create then
+                self:createFiles()
+            end
         end
     end
-    print("Puzzle 1")
 end
 
 days.Day = Day
diff --git a/src/lib/utils.lua b/src/lib/utils.lua
index 7a5050d..48f2eaf 100644
--- a/src/lib/utils.lua
+++ b/src/lib/utils.lua
@@ -22,7 +22,37 @@ function utils.promptChoices(choices)
             break
         end
     end
+    term.setTextColor(colors.white)
     return choices[c]
 end
 
+function utils.readFile(path)
+    if not fs.exists(path) then
+        printError("File " .. path .. " not found")
+        return nil
+    end
+    local file = fs.open(path, "r")
+    if not file then
+        printError("Could not open file")
+        return nil
+    end
+    local data = file.readAll()
+    file.close()
+    return data
+end
+
+function utils.waitForKey(targetKey)
+    if targetKey then
+        print("Press " .. keys.getName(targetKey):upper() .. " to continue")
+    else
+        print("Press any key to continue")
+    end
+    while true do
+        local event, key, is_held = os.pullEvent("key")
+        if not targetKey or key == targetKey then
+            break
+        end
+    end
+end
+
 return utils