diff --git a/2025/day01.livemd b/2025/day01.livemd
index a890637..f2ced72 100644
--- a/2025/day01.livemd
+++ b/2025/day01.livemd
@@ -28,6 +28,8 @@ instructions =
   end)
 ```
 
+<!-- livebook:{"branch_parent_index":0} -->
+
 ## Part 1
 
 ```elixir
@@ -39,6 +41,8 @@ end)
 |> elem(1)
 ```
 
+<!-- livebook:{"branch_parent_index":0} -->
+
 ## Part 2
 
 ```elixir
@@ -62,4 +66,4 @@ end)
 |> elem(1)
 ```
 
-<!-- livebook:{"offset":1234,"stamp":{"token":"XCP.CwH20tHaK8kU6dohgq36CnaY2nnD-3NQc7aO6IAmymU5SEl9dLhm1IihwzVAgdcKHOfAxiDSdAIr5aTfqXWdOCvQRqJrJVUwuKBpAhQvvj9HOgnXBEgEvZz0r_CMSDSOvw","version":2}} -->
+<!-- livebook:{"offset":1324,"stamp":{"token":"XCP.pI2XE8mwBZJ1_5rOsosmoLh5-clSindOf0NN_piQhnU8r5baxfvJEHunCv7iXrvn3G43jfoHCFBZZK6KbxbIY0lzTJzKKWPrrl0bQ9S1RQvkk6dMv_LpnTv13HwNr3JYMw","version":2}} -->
diff --git a/2025/day02.livemd b/2025/day02.livemd
index e52d040..1aa1d79 100644
--- a/2025/day02.livemd
+++ b/2025/day02.livemd
@@ -24,6 +24,7 @@ ranges =
     |> Enum.map(&String.to_integer/1)
     |> then(&apply(Range, :new, &1))
   end)
+|> Enum.sort_by(& &1.last)
 ```
 
 ## Implementation
@@ -59,6 +60,8 @@ defmodule ElfRanges do
 end
 ```
 
+<!-- livebook:{"branch_parent_index":1} -->
+
 ## Part 1
 
 ```elixir
@@ -68,6 +71,8 @@ ranges
 |> Enum.sum()
 ```
 
+<!-- livebook:{"branch_parent_index":1} -->
+
 ## Part 2
 
 ```elixir
@@ -77,4 +82,4 @@ ranges
 |> Enum.sum()
 ```
 
-<!-- livebook:{"offset":1434,"stamp":{"token":"XCP.NoAgOlNzs9jV0M8QxQDrdfMwKQR_xYkBG2FLF06XnKPtJ5ps3S83JucEVQZ7fJF0utUaryiCOT7xPWESlw3lS3TI6Jujiw8uFAZdKEXUL_jmZMHVF37TxiY4vRwKjfwvfg","version":2}} -->
+<!-- livebook:{"offset":1551,"stamp":{"token":"XCP.GvC7N5ZC0xuQ3hRuVxd-rh5rJDKVZKJfmwspDkAuCFbjn8qdOUksP9Iy1GRtd7t5yLCV6nkfhXZlp_lTw8eZZBcwItn6IlML-jrjiORJQvkuXOHvzlOY17rIAaASRKvS3w","version":2}} -->
diff --git a/2025/day03.livemd b/2025/day03.livemd
index 0f5247c..bd040a7 100644
--- a/2025/day03.livemd
+++ b/2025/day03.livemd
@@ -4,7 +4,7 @@
 Mix.install([:kino_aoc])
 ```
 
-## Section
+## Parse
 
 <!-- livebook:{"attrs":"eyJhc3NpZ25fdG8iOiJwdXp6bGVfaW5wdXQiLCJkYXkiOiIzIiwic2Vzc2lvbl9zZWNyZXQiOiJBRFZFTlRfT0ZfQ09ERV9TRVNTSU9OIiwieWVhciI6IjIwMjUifQ","chunks":null,"kind":"Elixir.KinoAOC.HelperCell","livebook_object":"smart_cell"} -->
 
@@ -37,16 +37,20 @@ defmodule Joltage do
 end
 ```
 
+<!-- livebook:{"branch_parent_index":0} -->
+
 ## Part 1
 
 ```elixir
 Enum.sum_by(batteries, &Integer.undigits(Joltage.make_largest(&1, 2)))
 ```
 
+<!-- livebook:{"branch_parent_index":0} -->
+
 ## Part 2
 
 ```elixir
 Enum.sum_by(batteries, &Integer.undigits(Joltage.make_largest(&1, 12)))
 ```
 
-<!-- livebook:{"offset":1124,"stamp":{"token":"XCP.c4B4LAKOm9IZipbHc85MIeUBdcwcaQptUgMJIlHzU3DD1hssADSGdE-vByW1pHXsrARIeklYPeAk8Nn3AXBYvoEjBgm8zEP9oMXmp04xI_hLHezHURvrp6zdapkG0-l_sw","version":2}} -->
+<!-- livebook:{"offset":1212,"stamp":{"token":"XCP.fo1ohV8LylIz8VmOAj7rlJ4Jn5KPGtiiFfsDRmp0pFSXCESjhfmQ11wOwEVmq9HM-Zn8fozQDsOoJbfgbM5LJPVE9c0pw2tYKbteOOGNqHI3PTIkuBnv8ZPW6oYwWAZy4A","version":2}} -->
diff --git a/2025/day04.livemd b/2025/day04.livemd
index 530901a..3683c3f 100644
--- a/2025/day04.livemd
+++ b/2025/day04.livemd
@@ -4,7 +4,7 @@
 Mix.install([:kino_aoc])
 ```
 
-## Setup
+## Parse
 
 <!-- livebook:{"attrs":"eyJhc3NpZ25fdG8iOiJwdXp6bGVfaW5wdXQiLCJkYXkiOiI0Iiwic2Vzc2lvbl9zZWNyZXQiOiJBRFZFTlRfT0ZfQ09ERV9TRVNTSU9OIiwieWVhciI6IjIwMjUifQ","chunks":null,"kind":"Elixir.KinoAOC.HelperCell","livebook_object":"smart_cell"} -->
 
@@ -32,14 +32,14 @@ rolls =
 
 ```elixir
 defmodule PaperRolls do
-  def adjacent({x, y}) do
+  defp adjacent({x, y}) do
     for dx <- -1..1,
         dy <- -1..1,
         {dx, dy} != {0, 0},
         do: {x + dx, y + dy}
   end
 
-  def free?(pos, map) do
+  def movable?(pos, map) do
     pos
     |> adjacent()
     |> Enum.count(&(&1 in map))
@@ -48,12 +48,16 @@ defmodule PaperRolls do
 end
 ```
 
+<!-- livebook:{"branch_parent_index":1} -->
+
 ## Part 1
 
 ```elixir
-Enum.count(rolls, &PaperRolls.free?(&1, rolls))
+Enum.count(rolls, &PaperRolls.movable?(&1, rolls))
 ```
 
+<!-- livebook:{"branch_parent_index":1} -->
+
 ## Part 2
 
 ```elixir
@@ -61,7 +65,7 @@ cleaned =
   Stream.repeatedly(fn -> [] end)
   |> Enum.reduce_while(rolls, fn _, acc ->
     removable =
-      Enum.filter(acc, &PaperRolls.free?(&1, acc))
+      Enum.filter(acc, &PaperRolls.movable?(&1, acc))
       |> MapSet.new()
 
     case MapSet.difference(acc, removable) do
@@ -75,4 +79,4 @@ cleaned =
 MapSet.size(rolls) - MapSet.size(cleaned)
 ```
 
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+<!-- livebook:{"offset":1586,"stamp":{"token":"XCP.-_kcJR24r3dthl7SnpOh24JBI5hDpqMlFjQQDQ0pxtv4UHyaTlGoG4rG5iZxKtgxQoNAxw0K-mowSwehidDfrqewK3r9FHoOcAOIDbOMFd3QGH2X2Ta6KeXd4PlzWSYDBw","version":2}} -->
diff --git a/2025/day05.livemd b/2025/day05.livemd
index 4de10ad..a0dd652 100644
--- a/2025/day05.livemd
+++ b/2025/day05.livemd
@@ -7,7 +7,7 @@ Mix.install([
 ])
 ```
 
-## Section
+## Parse
 
 <!-- livebook:{"attrs":"eyJhc3NpZ25fdG8iOiJwdXp6bGVfaW5wdXQiLCJkYXkiOiI1Iiwic2Vzc2lvbl9zZWNyZXQiOiJBRFZFTlRfT0ZfQ09ERV9TRVNTSU9OIiwieWVhciI6IjIwMjUifQ","chunks":null,"kind":"Elixir.KinoAOC.HelperCell","livebook_object":"smart_cell"} -->
 
@@ -35,12 +35,20 @@ ingridients =
   |> Enum.map(&String.to_integer/1)
 ```
 
+<!-- livebook:{"branch_parent_index":0} -->
+
+## Part 1
+
 ```elixir
 Enum.count(ingridients, & &1 in fresh)
 ```
 
+<!-- livebook:{"branch_parent_index":0} -->
+
+## Part 2
+
 ```elixir
 Enum.count(fresh)
 ```
 
-<!-- livebook:{"offset":863,"stamp":{"token":"XCP.XHMkonPfVQNZ43fIPanTNAFSPojbYWSWMU1wxn37_PPkpVpaY-fKZmAwoH-3qs2vx3CD_h34H1PjbHKDDWdrb7UxHoJoV5UxMppoorBtxw9hQF7YuznVwOa187BXPmKPcw","version":2}} -->
+<!-- livebook:{"offset":973,"stamp":{"token":"XCP.GHEtbWlG6LHz6I0d5Y_d4738EDILulvQyP1NtPISLeYWo9atG0Ailm43-eswn0JGS5h2z5Yxb8Xi8nGJLqUkj41eqpnT_u7NxVCT4ceeKMBsd5R-EuxBw0P7vLlBab68MA","version":2}} -->
diff --git a/2025/day06.livemd b/2025/day06.livemd
index cff294c..db2245f 100644
--- a/2025/day06.livemd
+++ b/2025/day06.livemd
@@ -27,6 +27,8 @@ ops =
   |> Enum.map(&String.to_atom/1)
 ```
 
+<!-- livebook:{"branch_parent_index":0} -->
+
 ## Part 1
 
 ```elixir
@@ -40,6 +42,8 @@ tasks
 end)
 ```
 
+<!-- livebook:{"branch_parent_index":0} -->
+
 ## Part 2
 
 ```elixir
@@ -61,4 +65,4 @@ tasks
 end)
 ```
 
-<!-- livebook:{"offset":1229,"stamp":{"token":"XCP.uuy6Ksg23kO8DXLs0nEHWRa2q8MnTF00fl1kNBDi-xlsQ1DZ_teumvy__d8PZSNG_VIsQ9fTr1rGiHu3aFBxxeOD5uVO2plujrne43wrcKxIt7wi6AInBo9LuC1gXgwFgw","version":2}} -->
+<!-- livebook:{"offset":1319,"stamp":{"token":"XCP.wqKPUf7KHN-UzqY1O8_n61vLL2ksAE_kGnIsQL0IpamJTD-NEX9_HbYK4H0y_NM8lKhqDz4rZ-TMFsXjuQ3n2-URGSNh_SCmDtJIbJBAP3mbiCwyN52oyGL0Nq5eD424MQ","version":2}} -->
diff --git a/2025/day07.livemd b/2025/day07.livemd
index b195a18..1f17b1b 100644
--- a/2025/day07.livemd
+++ b/2025/day07.livemd
@@ -30,6 +30,8 @@ splitters =
   end)
 ```
 
+<!-- livebook:{"branch_parent_index":0} -->
+
 ## Part 1
 
 ```elixir
@@ -92,11 +94,11 @@ Image.new!(width, height)
     import MapSet, only: [intersection: 2, difference: 2, union: 2]
 
     for x <- beams do
-      Image.Draw.point!(img, x, y, color: :green)
+      Image.Draw.point(img, x, y, color: :green)
     end
 
     for x <- splits do
-      Image.Draw.point!(img, x, y, color: :red)
+      Image.Draw.point(img, x, y, color: :red)
     end
     
     hits = intersection(beams, splits)
@@ -106,14 +108,10 @@ Image.new!(width, height)
     beams
   end)
 
-  #for {row, y} <- Enum.with_index(splitters, 1),
-  #    x <- row,
-  #  do: Image.Draw.point!(img, x, y, color: :red)
-
   img
 end)
 |> then(fn {:ok, img} -> img end)
 |> Image.resize!(5, interpolate: :nearest)
 ```
 
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