diff --git a/day9.hs b/day9.hs
new file mode 100644
index 0000000..cd38e28
--- /dev/null
+++ b/day9.hs
@@ -0,0 +1,12 @@
+import Data.List
+s=scanl
+v=[-1..1]
+r=replicate
+h%t=t+signum(h-t)
+p(d:_:i)=r(read i)d
+(h:l)&d=s(?)(zipWith(+)(z[d])h)l
+[x,y]!t=elem t[[x+n,y+m]|n<-v,m<-v]
+h@[x,y]?t@[a,b]|h!t=t|let=[x%a,y%b]
+w i=length.nub.map last.(s(&)$r i[0,0])
+z"U"=[1,0];z"D"=[-1,0];z"L"=[0,-1];z"R"=[0,1]
+main=interact$show.((,).w 10<*>w 2).(p=<<).lines
diff --git a/day9long b/day9long
new file mode 100644
index 0000000..b249a09
--- /dev/null
+++ b/day9long
@@ -0,0 +1,2000 @@
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diff --git a/day9short b/day9short
new file mode 100644
index 0000000..9874df2
--- /dev/null
+++ b/day9short
@@ -0,0 +1,8 @@
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diff --git a/day9short2 b/day9short2
new file mode 100644
index 0000000..60bd43b
--- /dev/null
+++ b/day9short2
@@ -0,0 +1,8 @@
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