diff --git a/data/day_2.txt b/data/day_2.txt
new file mode 100644
index 0000000..3feb052
--- /dev/null
+++ b/data/day_2.txt
@@ -0,0 +1,1000 @@
+forward 2
+forward 3
+forward 5
+forward 6
+down 7
+forward 8
+forward 4
+forward 7
+forward 5
+forward 5
+down 4
+down 9
+forward 8
+forward 5
+up 5
+down 5
+forward 3
+down 4
+down 8
+forward 9
+down 1
+up 9
+down 7
+up 7
+up 1
+forward 1
+down 1
+down 4
+down 4
+down 8
+down 4
+up 3
+down 1
+down 3
+forward 7
+down 6
+forward 3
+forward 5
+forward 2
+up 9
+forward 7
+up 5
+down 3
+forward 1
+forward 2
+down 3
+down 8
+down 3
+forward 8
+up 5
+down 5
+forward 3
+down 5
+forward 9
+down 3
+down 4
+down 9
+down 7
+up 3
+down 9
+up 9
+up 1
+forward 3
+up 4
+down 3
+forward 7
+forward 7
+up 7
+forward 6
+down 7
+down 6
+forward 2
+forward 9
+down 5
+forward 4
+up 6
+down 1
+down 9
+down 9
+forward 4
+down 1
+forward 6
+down 1
+down 5
+down 4
+down 4
+forward 4
+forward 9
+up 1
+down 2
+down 8
+down 5
+down 8
+down 8
+up 2
+forward 8
+up 1
+forward 4
+down 5
+down 1
+up 2
+forward 6
+forward 9
+forward 2
+forward 6
+forward 9
+up 6
+forward 9
+up 4
+down 7
+up 6
+forward 2
+down 1
+up 3
+forward 1
+forward 8
+down 6
+down 8
+down 8
+forward 8
+forward 2
+forward 2
+down 2
+up 1
+down 9
+up 9
+down 9
+up 3
+forward 9
+up 4
+up 7
+up 6
+down 9
+forward 1
+down 3
+down 4
+forward 8
+down 3
+down 9
+up 3
+forward 2
+up 5
+down 3
+forward 8
+up 3
+down 3
+forward 2
+forward 9
+down 1
+down 9
+down 4
+up 7
+down 4
+up 6
+forward 5
+down 6
+forward 3
+down 2
+forward 1
+forward 8
+down 4
+forward 1
+up 7
+forward 6
+up 9
+forward 6
+down 3
+forward 2
+down 4
+forward 6
+down 3
+down 6
+down 1
+down 1
+down 5
+forward 3
+forward 9
+forward 8
+down 3
+forward 7
+up 9
+forward 9
+up 2
+forward 4
+up 3
+forward 1
+up 6
+up 8
+down 5
+down 6
+up 9
+down 6
+down 9
+up 9
+down 4
+forward 5
+up 2
+down 3
+up 3
+down 1
+forward 3
+down 5
+forward 7
+down 6
+down 7
+down 5
+forward 2
+up 6
+down 9
+down 4
+down 3
+forward 9
+up 8
+forward 2
+down 2
+forward 4
+up 6
+down 4
+up 8
+down 7
+down 2
+up 6
+up 4
+down 2
+forward 5
+up 4
+down 8
+forward 3
+forward 1
+down 7
+forward 8
+forward 7
+down 7
+up 4
+forward 8
+down 5
+up 9
+forward 1
+forward 4
+forward 9
+forward 7
+down 9
+up 9
+down 1
+down 7
+forward 7
+down 7
+down 7
+down 3
+down 5
+forward 3
+down 2
+forward 6
+down 9
+up 5
+up 3
+forward 5
+down 6
+down 1
+forward 4
+down 3
+forward 8
+down 7
+forward 7
+forward 7
+up 7
+up 2
+up 3
+forward 9
+down 5
+up 2
+forward 5
+up 5
+forward 2
+forward 2
+down 8
+forward 2
+up 4
+forward 1
+forward 3
+up 8
+up 9
+forward 5
+down 1
+up 8
+down 4
+down 8
+up 4
+forward 9
+down 6
+down 8
+up 2
+up 3
+down 7
+down 4
+forward 5
+down 6
+forward 3
+forward 3
+forward 8
+down 1
+down 7
+down 9
+down 2
+down 7
+forward 7
+down 7
+down 6
+up 6
+forward 8
+forward 5
+up 5
+down 2
+up 8
+up 4
+down 9
+up 2
+forward 5
+up 2
+down 4
+up 4
+forward 2
+forward 4
+forward 9
+forward 9
+up 4
+up 5
+down 1
+down 6
+down 1
+down 4
+down 5
+down 3
+forward 3
+down 9
+forward 6
+down 3
+down 9
+down 2
+up 2
+down 2
+down 7
+forward 9
+down 3
+down 3
+down 2
+down 3
+forward 2
+down 9
+down 9
+up 5
+up 3
+forward 4
+up 7
+forward 8
+up 6
+forward 7
+down 7
+down 1
+forward 5
+down 2
+up 1
+down 8
+up 3
+forward 2
+up 9
+down 1
+down 3
+down 6
+down 2
+down 7
+up 2
+forward 5
+forward 7
+down 2
+forward 5
+forward 4
+forward 5
+down 3
+forward 7
+down 7
+forward 8
+down 3
+down 2
+up 1
+forward 6
+down 4
+down 2
+forward 7
+up 3
+down 4
+forward 2
+up 6
+down 3
+up 6
+up 8
+down 9
+up 6
+forward 8
+forward 9
+forward 4
+forward 7
+down 2
+forward 9
+down 7
+up 9
+down 5
+down 6
+up 5
+down 4
+forward 8
+forward 4
+forward 4
+down 6
+forward 3
+forward 6
+down 9
+down 9
+up 2
+forward 7
+down 8
+down 9
+down 9
+forward 7
+forward 3
+down 7
+down 8
+forward 8
+down 6
+down 5
+down 9
+down 3
+forward 1
+down 5
+forward 2
+forward 8
+down 2
+forward 6
+forward 3
+down 7
+down 4
+forward 8
+forward 1
+down 6
+forward 9
+forward 6
+up 1
+up 3
+down 8
+forward 1
+up 5
+down 4
+forward 7
+up 3
+down 2
+forward 1
+forward 9
+down 9
+down 7
+forward 8
+down 4
+up 3
+down 4
+forward 2
+forward 6
+down 7
+forward 6
+down 6
+down 4
+down 1
+up 9
+down 4
+down 7
+up 4
+down 9
+forward 6
+down 3
+forward 2
+down 4
+forward 3
+down 5
+up 9
+forward 8
+up 7
+up 6
+up 4
+forward 1
+down 1
+forward 4
+up 6
+forward 5
+forward 4
+forward 5
+up 6
+down 1
+forward 3
+up 7
+down 9
+up 9
+down 5
+forward 6
+forward 4
+up 1
+down 4
+up 1
+forward 3
+forward 1
+down 3
+forward 7
+down 2
+forward 3
+up 2
+forward 8
+down 3
+up 9
+down 5
+forward 6
+down 1
+down 8
+down 5
+forward 1
+down 6
+up 2
+forward 6
+down 2
+down 1
+up 6
+up 7
+down 5
+forward 7
+forward 6
+forward 6
+down 7
+forward 4
+down 5
+up 5
+down 1
+up 8
+down 8
+down 2
+down 2
+down 9
+up 9
+forward 2
+forward 7
+down 7
+down 4
+down 4
+down 8
+forward 5
+forward 2
+up 9
+down 9
+forward 7
+up 9
+down 2
+down 7
+up 2
+up 8
+forward 8
+down 4
+forward 3
+forward 4
+forward 6
+forward 2
+down 1
+down 2
+forward 2
+up 1
+down 1
+forward 5
+up 3
+up 3
+down 3
+down 1
+down 4
+up 5
+up 6
+forward 5
+up 7
+forward 6
+down 4
+down 7
+up 8
+forward 1
+down 5
+up 4
+up 3
+up 5
+down 1
+up 5
+forward 3
+up 5
+forward 2
+forward 2
+forward 5
+forward 2
+up 9
+forward 4
+down 1
+down 3
+down 5
+up 2
+down 8
+forward 8
+forward 9
+down 1
+down 3
+forward 8
+forward 2
+down 2
+down 1
+up 7
+forward 2
+forward 8
+down 9
+forward 1
+forward 4
+down 7
+down 4
+up 7
+down 3
+down 1
+down 4
+up 7
+down 6
+forward 7
+down 8
+up 2
+up 4
+up 6
+down 9
+down 9
+down 8
+forward 6
+up 3
+up 1
+forward 9
+forward 6
+up 4
+up 2
+up 7
+forward 5
+up 9
+up 9
+forward 9
+up 6
+down 1
+down 3
+forward 3
+down 2
+down 2
+down 6
+down 9
+forward 3
+forward 7
+up 3
+forward 3
+down 5
+forward 9
+up 6
+down 2
+forward 8
+down 3
+up 5
+down 6
+forward 9
+down 5
+down 2
+down 6
+forward 8
+forward 6
+down 1
+forward 6
+up 1
+up 7
+down 4
+down 7
+forward 4
+forward 7
+down 4
+forward 8
+down 8
+down 7
+forward 9
+down 1
+down 3
+down 6
+forward 7
+forward 6
+forward 3
+forward 8
+down 5
+down 3
+up 1
+down 9
+down 8
+forward 3
+down 6
+down 1
+forward 5
+forward 5
+forward 9
+up 5
+down 6
+up 9
+down 7
+down 6
+up 1
+forward 5
+forward 7
+forward 8
+forward 7
+forward 6
+forward 3
+forward 1
+forward 2
+up 4
+forward 3
+forward 4
+forward 5
+up 2
+up 3
+forward 4
+down 9
+up 4
+forward 7
+down 6
+down 6
+down 1
+forward 2
+down 2
+forward 2
+down 3
+forward 7
+forward 8
+down 4
+up 7
+forward 7
+down 7
+forward 7
+forward 9
+down 7
+up 2
+down 3
+forward 7
+down 1
+forward 8
+forward 2
+up 9
+down 3
+forward 2
+up 4
+forward 9
+down 4
+down 4
+forward 4
+down 2
+down 9
+forward 4
+down 2
+down 6
+forward 9
+forward 2
+up 1
+forward 2
+forward 3
+down 5
+up 8
+down 4
+down 4
+forward 7
+down 2
+up 6
+down 9
+forward 9
+up 1
+forward 3
+down 5
+forward 3
+down 3
+forward 4
+up 3
+down 6
+down 7
+down 4
+down 8
+down 4
+down 5
+up 9
+up 1
+down 7
+up 3
+up 3
+down 3
+up 4
+up 6
+forward 8
+down 1
+forward 7
+forward 4
+down 9
+down 1
+forward 7
+forward 9
+forward 1
+down 3
+down 2
+forward 3
+forward 2
+down 7
+forward 9
+forward 6
+up 9
+down 2
+forward 9
+up 6
+forward 8
+up 1
+down 5
+down 8
+forward 1
+down 1
+forward 9
+up 1
+forward 9
+forward 1
+forward 1
+down 7
+forward 3
+forward 6
+down 5
+forward 7
+forward 1
+down 7
+down 6
+down 6
+forward 5
+up 6
+down 6
+forward 8
+up 2
+down 8
+down 3
+up 5
+up 8
+down 6
+forward 4
+forward 2
+up 3
+forward 5
+forward 3
+up 8
+forward 6
+up 8
+forward 1
+up 8
+up 7
+up 6
+forward 2
+down 9
+down 9
+forward 3
+down 7
+forward 3
+down 6
+forward 9
+up 5
+down 1
+forward 7
+down 1
+down 5
+down 9
+forward 8
+forward 9
+forward 7
+down 9
+up 4
+forward 5
+down 5
+forward 5
+down 9
+forward 9
+forward 3
+up 5
+forward 8
+up 5
+down 1
+forward 8
+down 3
+forward 6
+up 9
+forward 8
+down 4
+forward 3
+down 5
+forward 8
+forward 9
+forward 2
+down 1
+down 6
+down 4
+forward 9
+up 2
+down 3
+down 6
+down 3
+down 9
+down 1
+up 6
+down 2
+down 7
+up 5
+forward 5
+up 1
+down 7
+forward 6
+up 6
+down 2
+down 3
+forward 3
+down 5
+forward 8
+down 9
+down 7
+down 8
+up 7
+down 1
+forward 1
+forward 1
+down 2
+up 4
+forward 2
+down 3
+up 2
+down 3
+down 2
+forward 7
+down 1
+up 7
+down 2
+down 1
+forward 6
+down 9
+up 9
+down 4
+down 6
+up 9
+forward 7
+forward 9
+forward 7
+down 4
+down 1
+forward 7
+down 4
+down 7
+down 3
+down 5
+forward 3
+down 8
+forward 8
+forward 7
+forward 8
+down 4
+down 9
+forward 2
+forward 7
+up 8
+forward 4
+down 6
+up 8
+down 2
+forward 3
+down 6
+down 8
+forward 8
+forward 2
+forward 9
+up 6
+forward 7
+down 3
+down 5
+forward 8
+forward 9
+down 3
+forward 3
+forward 2
+forward 3
+down 8
+up 9
+up 5
+up 2
+up 6
+up 1
+up 1
+up 5
+forward 3
+forward 2
+down 3
+forward 4
diff --git a/src/day_2.jl b/src/day_2.jl
new file mode 100644
index 0000000..515b971
--- /dev/null
+++ b/src/day_2.jl
@@ -0,0 +1,41 @@
+include(joinpath(readchomp(`git rev-parse --show-toplevel`), "aoc.jl"))
+import .Aoc: @aoc
+
+function sliding(in, w::Int64; step::Int = 1)
+  ((@view in[i:i+w-1]) for i in 1:step:length(in)-w+1)
+end
+
+
+function p1(input::Vector{String})
+  d = [0, 0]
+  for i ∈ input
+    c = match(r"(\w+)\s(\d+)", i).captures
+    if c[1] == "forward"
+      d[1] += parse(Int, c[2])
+    elseif c[1] == "down"
+      d[2] += parse(Int, c[2])
+    elseif c[1] == "up"
+      d[2] -= parse(Int, c[2])
+    end
+  end
+  prod(d)
+end
+
+
+function p2(input::Vector{String})
+  d = [0, 0, 0]
+  for i ∈ input
+    c = match(r"(\w+)\s(\d+)", i).captures
+    if c[1] == "forward"
+      d[1] += parse(Int, c[2])
+      d[2] += parse(Int, c[2]) * d[3]
+    elseif c[1] == "down"
+      d[3] += parse(Int, c[2])
+    elseif c[1] == "up"
+      d[3] -= parse(Int, c[2])
+    end
+  end
+  prod(d[1:2])
+end
+
+@aoc(2021, 2)