diff --git a/10/input.txt b/10/input.txt
new file mode 100644
index 0000000..cf96421
--- /dev/null
+++ b/10/input.txt
@@ -0,0 +1,98 @@
+[[{(<({[(([[([()<>][()<>])]][<{[[]<>]}<<[]{}>>>])[({<[{}[]]<{}<>>><{()[]}[{}[]]>}<<(<>[])[[]{}]>{(<
+{{{[[<{<{({({(<>{})}<(()[])([]<>)>)})(<[([{}()]([]{}))[([][])([]<>)]]((<{}<>>[[]{}])({<>()}{()}))>
+[(<<[(<[[[<{(([]{})){<{}{}>{()<>}})><(<[()()][<>]>([[]]))[(([]<>)(<><>))((<>)({}[]))]>]{<<{{()[]}<[]<>>}
+{{({{{([<((<[[<>[]](<>[])]><<(()<>)<<><>>>{(()<>)(<>{})}>))>]({(([{{()()}>{{{}{}}{<><>}}]{({()<>
+<<{(<<{<<{([{{(){}}{()()}}{<[]{}>(<>{}))][({<>{}}[[]<>])<{{}{}}{{}()}>])[<<{{}{}}[()[]]>{{
+[[<{[<((<[[{{{{}{}}{{}[]}}}[[<{}<>>]]]({<([][]){{}<>}>((()<>)<<>[]>)})]><[({{<{}()>{()()}}})]{(<({[]{}}[{
+<<[{([[[[[<{[([]())({}[])]{[{}[]]}}<(<[]{}>({}{})){{[]<>}[()]}>>{(<{[]}[<>[]]>)}][(([[{}[]]<[]
+[(<[<{{((<{<[<{}[]>[<>{}]][<{}<>>]><<({}[])[[]<>]>}}>)<(([{<{}<>>(()[])}[[{}()]([])]]<<{<>()}({}{})>
+<{{[[<(<<<([({{}())([]{})){<()<>>{<>{}}}]<{[[]{}][[]<>]}{<{}()>{[]()}}>)<<{(<>())[<><>]}[{{}[]}(<>(
+{{{{<{{<{<<[[[{}()]<[][])]<{(){}}{[]{}}>][{<[]()>{<>{}}}]>><{(<<<>[]>{(){}}>{{[]()}[<><>]}){(<{}()>){[[][]](
+{(<{{([[(<{[((()<>){()()})<[<>{}]{()}>]<{[()[]]}>}([{<()>{{}[]}}[([][]){()[]}]]{{<<>[]>}{([]{}){<><>}}})
+[(((({[{<<{[{([]())(<>[])}[<{}()>{()()}]]}>>[<[[{{{}()}{()<>}}(<()<>>[{}[]])]{[({}<>)<<>>]}]<({<<><>
+<([[[((<[<<((<[][]>))<<{[][]}>>>{<([()()>)>}><([[[()[]]({}())]({<>{}}{()[]})]{{{<><>}[[]()]}[[[]
+(((<({([[({{({[][]})(({}())[()<>])}(<[[][]]>(<{}>[<>{}]))})](<{((<<><>>[()()]){<[]<>>[[]<>]})}([<
+[[{[[{[[{[{{[<{}()><()[]>]}}]<<{{<<><>>{{}{}}}[(<>{})(()())]}[{([]<>)[{}()]}<[[]][()()]>]><<{{[]{}}
+((<<((<(<[{[({()<>}{()()}){<{}{}>}]}[{<[<>()][[]()]>}]]{[{[<()>{[]{}}]}<{[{}{}}}[([]{})(<><>)]>](({(<>{})
+[[<[<({[[<<{[[()()]{(){}}]<[{}<>](()())>>(<[()[]][[]()]>)>[{(([][])([]{}))}[<<<><>><()<>>>(<<>[]>)]
+[({(<{(<{[{[{([]){{}{}}}(<[][]>(<>[]))](<{<>[]}<[]()>>{<()><{}>})}{[([<>{}]{[]()})[(<>{})<[]()>]][{[()<>
+[[<<{[(<({(((([]{})[[][]])<<{}{}>{[]()}>))})<[(<<(<>[])<[]()>><((){})[()<>]>>{<({}[])>{<<>{}>{(){}}}}
+<<([[({(<{<[[({}()){()[]}]]>((<<()[]>(<>{})>(([]())))(((()<>)({}[]))))}>{<{((([])<()[]>)<({}())<()<
+<<({[<{<({{{{[()()]<<>[]>}[{{}<>}[()()]]}{(([]()))})})[[[{[<<>[]>[<>()]]<{[]{}}[<>{}]>}]([{{[][]}{
+{((((([[([<{([<>{}]<{}[]>){({}())[{}[]]}}{(<()()>({}[]))<{<><>}(<>[])>}>([<{()<>}[()[]]><[()<>]>]{[{
+{[((((({<[{<{[(){}][[]()]}[({}[])]>{[[<>{}]{{}}]{[<>[]]<<>[]>}}}({[([]{})]{[[]<>]<[]{}>}}(<(()[])[{}()]
+((<<{<{{{<(<<[<>()]{{}<>}>({<>{}}[[]()])>(<<{}<>>({}<>)><[{}<>]{(){}}>))<(((()[])([]())){(<
+{(<(<([{{{((([<>[]]([]<>))({<>[]}<<>[]>)}{<(<><>)<<>{}>>(({}[])(()<>))}){[{{{}{}}}]{[<{}()>(<>{})][{[]}]}
+{{{([([(<[<[{<()>{()()}}<[()()]<<><>>>]{<<()<>>>(((){}){()<>})}>{<{({}[])<<><>>}((()())<{}{}>)>
+{(({(<<([[({<{[][]}<<><>>>}(<({}<>){{}<>}>{<<><>>(<>())}))<{{[{}<>]<[]()>}<<{}{}>>}[{<{}[]><(){}>}{
+[[[([[(([<[<{<<>{}><{}[]>}>((<[][]>[{}[]]))]{({<<><>>[()[])}[{{}()}<{}>])}>]){[{{((<<>{}>([]<>))([
+([<<<[(<(<{[[({}{}](<>)]{{{}<>}({}{})}][({()}{[]()})[({})]]}{<[(<><>)({}{})]<{<>}{[]}>>}>)>){{<[(<{(()()
+{{{<{(<(([<<<{{}[]}[<>{}]}>([<<>()>{<>()}]<<<><>>[{}<>]>)>{[([<>()]{()[]}){{<>{}}[<>[]]}]}][(<[(()
+<<<[[{(([<<{{(()())[{}[]]}{[[]<>]<<>>}}[(<<>><{}<>>){{{}[]}[{}()])]>([(<{}()>[[]()])[(()())
+{{{([[[<{(<<{[[]()](<>{})})[(<[]{}><[]{}>)[<[]{}>{{}()}]]>[[[(()()){{}{}}][[<>[]](())]]<([{}()][{
+([{{([[[({[(((<>)(()<>)){[{}{}](()())}){(((){})([]()))[(<>{})<[][]>]}]([({[]()}[(){}])<[{}()>(()<>)>
+[[[<<(({<<(([({}[])<(){}>][[{}]([]())])<{{[]()}[[]]><{<><>}<()[]>>>)>{<{<[[][]]<{}<>>>([[]<>]{{}<
+[[[<[<([{<[{{{()<>}({}<>)}}(<{{}<>}{[]()}>[<()())(<>())])]>[[(<{()}<[]()>><[()[]]<<>{}>>){<[()<
+{{(<({((<[<<[([][])<[]<>>](<<>[]>)>>{<([(){}]{[]{}})>{[({}<>)]<[(){}]{{}}}}}]>)[[[[<{<[][]>(
+[[[[{{{{([(((({}<>){()()})[{()()}([]<>)])[{<{}{}><[]{}>}([()<>][[]()])])]))}(<[[[{[[()[]]<()[]>]}]{((
+({{[(((([<({{(<>())<{}()>}([{}{}]<{}{}>)}[{[{}{}]}<[[]]<()[]>>])[([<{}{}><[]{}>])<<[(){}]({}{}
+(<<({<({[({[{{()[]}[()<>]}<{<>{}}({}{})>](<{<>{}}>[{{}<>}{(){}}])})(({<<{}[]>{<>()}>}{{<<>()>
+[[[[<<<({<({({[]}[[]{}])(<{}()>[{}{}])}[[({}())][{<>{}}{[]<>}]])>})<([<(<(()[])([]())>)<[[{}[]][{}<>]][[(
+{<{<{<[[{[[<(([]{})){[()[]][{}[]]}><[{<>{}}({}{})]{({}())<<>[]>}>]]}(([<[{<>()}{(){}}]<<[]{}>(()())>>]
+{<<<{<{<(<{([(<>)<[][]>][(()[]){{}<>}])}(((({}<>)<[][]>){([]<>){()<>}})<<<<>()>{{}()}>{<[]()><[]()>}>)})[<{
+([<<[[{{<[{(<{[]()}>)<<<<>()>([]<>)>>}]{(({{<>()](()<>)}(({}())[[]()])))}>{(<[<(<><>)[{}<>]
+[{<<{[[<[<<{{<<>()>}[[{}[]]({}{})]}([[<>[]]][(<><>)<()()>])>[({[<><>][[]<>]})({<[][]>(()<>)})]>}>][{(([<[{
+{([[[<[(([[<<<()<>>[<>()]>[<()<>><(){}>]>[<<[][]>(<><>)>]][(([<>()]<<>()>))<([{}()]{{}{}}){<()[]){[]()}}>]]{[
+{{<<[<{{([({[([]<>)[{}()]]{[()[]>[()()]}}<[[<>{}](<><>)]>)[<(<<><>><[]{}>)([<>{}])><<{[]}[{}()]>{<<>{}>[<>[]
+{{<(<<((<[<<<[{}[]]<<><>>>[({}[]){{}()}]>>]>){(<([(<<>[]><{}>)({<><>}<{}[]>)]{{([]{}>(()())}
+[(<<<{[<([[(({()()}<{}[]>){[{}<>]([]<>)})({(<>[])(()<>)}[([][])<())])]])({[<(([][]){()()})>{[[(
+[<[[(({[<<([{({}[])[{}{}]}{<<>[]>[{}{}]}])[[({{}}<[]>){<[]()>{{}{}}}]<{[<>[]](<>())}<[()()][()<>]>>]>(<[[[[
+{<{[([[<<<{<<({}{})(<>())>{<<><>><{}{}>}>{({()()}<{}()>)<(<>{}){<>[]}}}}({[{[]{}}{()<>}](<<><>>(
+{{<<([{([[(([{()<>}<(){}>]<<()()>(()<>)>)({[{}()]}<<()[]><()()>>))][[<(((){})<[][]>)><(<<><>>
+{(([{({<{[({[(<><>)(()()]]<[<>[]][{}<>]>})]}>{(([[(<()[]>(()<>)){{[]<>}(<>())}]([<[]()>[{}[
+{{({{{<{{{[([[<><>]]<{[][]}[[]<>]>)(<<<><>><<><>>>[(()())({}<>)])]((<(<><>)<(){}>>[{{}{}}[{}<>]])([<()[]>
+{(<<{{<<{{{{<<[]<>>[{}()]><<()[]>{{}[]}>}}}}([({<<{}{}>[()]>[[{}[]]<[]{}>]}(<{()()}<()[]>>))]{
+{<<([((<<[<{({{}[]}<()()>)(([]{})<{}[]>)}<(((){})[()<>])>><(<(<><>)<<><>>>){[((){})([]<>)](([][])[<
+<{[{<{<<({<<([{}()]{[]{}})[({}())<{}()>]>>[[[(()[])[()<>]](<[][]><{}()>)][(([]()]([]))]]})>>{<[<[((<{}<>>{(
+[{[[[({<<[[([{<>{}}[[]]]<<{}<>><[]<>>>)(<<{}()>[()<>]>[<(){}>])][<{<()()><<>[]>}<[[][]][<>()]>><[[{}()](<>)
+<{{[{[{[([[[([<><>]({}[]))([[][]](<>{})}][[{[]()}{{}()}][{[][]}<{}<>>]]][(({[]<>}[<>()])[<()<>><[][]>])<(({}
+{(({[{(<[<(<[{<><>}<{}[]>]<[{}<>]((){})>>([{()}(<><>)])){<[<()<>>[{}()]]({<>{}}(<><>))>{{(<
+<<[[(<{<({<<[[<>()]((){})]>{[({})<{}<>>]((<>{}){[]<>})>>})>}>({{(<<{([()[]])[{{}[]}(<>[])]}>>)}<((<<<
+[[([{{((<(<({{[]<>}}<{<>()}([]())>)<[<<>()>(<>{})][[()()]<<>{}>]>>)>(<[[{[{}{}]({}[])}({{}{}}[[]()
+<{[[{[([<([{<<()()>><<<>[]>>}][[((<>)(<><>))<({}{})<()<>>>]<{[<>()]<[]{}>}>])({[[{[]{}}]]}{({[<>()
+<<[<{<([([<({<(){}>{[]()}}<<{}<>><[]<>>>)>{{<[(){}]{<>()}>(<<>()>[{}<>])]}](<(<(()())<<><>>
+[{[<[<[<<(<[(<<>{}>)[<{}{}>({}{})]]})>[[(((<<>[]>[<>()])<{(){}}<(){}>>){{(<><>)}[(<>()){{}<>}]})
+{<{<({{(<(<([[<>()][[]()]][(()[])[[]<>]])[([[]{}]{{}<>})]>[[<({}()){<><>}><{()[]}({}())>]([{<>{}}
+({(([(<[[{{<([[]()]{{}{}})[{{}{}}[{}<>]]>[{([]<>)(()())}(<<><>>{<>{}})]}<<({()()}{()<>})[(<>
+[<[<((({{<{([({}())([]{})]<(()())(<>())>)({<()[]>{<>[]}})}<[([()<>]{{}<>})](<{[]()}(<>())>)>>[({[([])(
+({[<[(<((<{(<[()[]>[{}<>]>)<{<[]<>>{<>[]}}(({}{}))>}{{<[[]{}][{}{}]>{(())<[]()>}}}><<<{(<>[])<[]()>}({[][
+(<<<({({<[[<<(<><>}<()<>>>{<{}<>><[]<>>}>[<<[]<>>(()[])>{<()()>}]]]{{(([<>[]]<[]{}>){({}{})([][]
+({<[[<[({[{<{(()<>)}[(()[])<<>{}>]>}({{(<><>)[<><>]}[{[]()}<(){}>]}{{[()()]<(){}>}[[{}[]]([]{})]})]([[<{{}()}
+[[[(<({(({{{<{()<>}[<>{}]><<[][]>({}[])>}[[[{}{}]<<>{}>][[(){}]]]}[<([{}{}][[]])[{<><>}[()[]]]>]}<<[({{
+[<[[{[(([[<{(<{}{}>)}(<{(){}}([][])>{<(){}><<>{}>})>([([{}{}])(<[]><(){}>)])][({<<{}<>><[]<>>>[[[]{}]{[]{}}]
+[{{[(<<{{{[([(()())<<><>>])<([()()]((){}))<([][]){[]<>}>>]{<<{(){}}(<><>)>({()<>}<()[]})>}}}}[{{<<
+<[{[(({({<(<<<{}{}>{{}{}}>{([])({})}>{[{<>>(<>)]{[<>{}]<{}<>>}})[<({{}[]}<{}{}>)<([]())({}())>>({<[]
+(<[<({[{{(((({{}[]}{{}<>}){(<>[])})[[({}<>)[[]<>]]<[{}]{[][]}>])(<[(<>()){<>()}]<(<><>){(){}}>>
+[([{([{[<{<[<(<>{}){{}[]}>{([][]){()}}]{[<[]{}><<>{}>]{[(){}){[]{}}}}>([<[{}]<{}[]>>{<[][]>{()[]}}][{{<>()}{{
+<{{(({({[<(({({}[]){{}<>}}[(<>()){[]{}}]))[[<{()()}[{}{}]>(<{}{}>(<>[]))]<<{()()}<{}{}>><{<><>}<<>[]
+{{[[<[<[{[<{{[[]<>]<[]>}[({}{})(<>)]}>](<<((<>)<[]<>>)[<{}()><<>[]>]>[<{<>()}<(){}>>[[()<>]]]>(<[{
+({[<(<{<[<<<(<<>()><[]<>>)<<()<>>({}[])>>(<[()()]{<><>}>)>>]>(<<({[<{}[]>{()}]}<<{()<>}({}())>({[]<>}([]()))>
+<{<{{[({{(<{<<<><>><(){}>>[([][])([]{})]}<{([][]){{}}}<<[]()>([][])>>>[<{{[]()}[()<>]}<[<>{}]([]{})>>])
+{({[{(<[<<<<(([]<>)<{}{}>)>((({}{})<{}<>>)<<{}{}>>}>{{[<()()>[{}()]]}((<<>()>[(){}])<{[]<>}[<>{}]>)}>>{<<{
+((([<[[[<{{<<<{}[]><<>{}>>(([]<>)[[]])>((<{}[]><{}>)(({}[])[()[]]))}{{<(<>[])(<><>)>(<<>[]
+[[([{<(<(<[({[[][]]{()<>}}{{<>[]}<[][]>})]>)<{[((((){})([]<>))[<<><>>(<><>)]>[{<{}[]><[][]>
+[<<(<(({{{<((([]())[<>{}])<[[][]]{()()}>)><[<((){})<()()]>[<[]>[(){}]]]({([]())([]{})}([<>(
+(<{<<{<((({(<{(){}}[()<>]>{[[]<>][()[]]})<<{[][]}{{}[]}>[(<><>)<{}{}>]>}(<[{{}<>}{[]()}]({()[]}((
+<[[([<<[{{<(<[()[]]{<><>}>([<>[]]<{}[]>))[({{}()}<[]<>>)<(<>{})>]>{{{<<>{}>(<>)}<{<>()}[<>()]>}<[<<>()
+[[((<({<[{{<[[[]()][<>]](<()()>[{}<>])>{<(()<>)>([()<>]{()[]})}}{[[(()<>><[]<>>]]<{(<><>){{}<>}}
+[<{([{[{<<<(<[<><>]({}())>{([]<>][[]{}]})[<{[]<>}[<>{}]>[<[][]>]]>>({([(<><>){<>{}}][{{}[]}({}<>)
+{({{<[([{([<<{<>()}>[{<>[]}[{}[]]]>](<{{[]{}}[{}<>]}({<>[]}[{}[]])>[<([][])({}{})><<{}()>(()<>)
+(<({[<(<[<[{([[]{}][{}[]])([{}[]])}{({<>[]}{()[]})[[<><>](()<>)]}]><(({[()[]]}([{}()][{}{}]))<[(()<>)]>)[[<
+<(<(<<({({[<{<<><>>[()<>]}{<[]()><<><>>}>[(([][])<{}[]>)(({}{})<<>()>)]](<<(<><>){[]<>}>([[][]][<>()])>{<(
+[({<[[<{[[{[{{<>()}{{}[]}}](([{}[]}{[][]})<{<>[]}({}<>)>)}{[(([]{})<{}[]>)<<{}>{(){}}>]}]<[
+<[({<<[[({{{((<><>)<[]<>>)<<{}><{}<>>>}(([(){}]{()})[{[][]}[[]<>]])}}[[<[<()[]>[{}()]]><{<{}<>><<>[]>}{[[]
+<[{[[[[[<{[<([<>()]([]{}))<{[]{}}<[][]>>>([{[]<>}([]<>)]{[{}()][<>{}]}}]<[[(<><>)[{}{}]][(()(
+{<{{[<({{<[([{()()}[{}<>]]{({}())<(){}>})[[{(){}}<[]<>>}<(<>()){{}{}}>]]{{(([]{})[[]()])[{{}{}}[[]{}]]}{<[
+(([<([<<{[{{[({}{})][(<>{})]}}]{{([<<>{}>(<>())])}}}>[{<<(({{}<>}<<>[]>){({}())<{}()>})><(<[()<>]><{()<>}<
+[<[{[[[({[{[(((){}){(){}}){{<><>}{{}[]}}]<{({}()){<>{}}}>}<{[{[]{}}({}{})])>]}{(<(((()[]){{}[]})[<()<>
+({<<([{{{{({[{<>[]}[{}{}]]{<[]{}><{}{}>}}[<[<>()](<><>)><[{}{}]>])(<{[<>()]<<>()>}<(<>[])>>(([()
diff --git a/10/syntaxchecker.hs b/10/syntaxchecker.hs
new file mode 100644
index 0000000..129ee0c
--- /dev/null
+++ b/10/syntaxchecker.hs
@@ -0,0 +1,95 @@
+import           Data.List   (foldl', sort)
+
+main :: IO ()
+main = do
+  input <- getContents
+  let
+    code = lines input
+  (putStrLn . show . solution1) code
+  (putStrLn . show . solution2) code
+
+solution1 :: [String] -> Int
+solution1 = sum . map charScore . map (head . fst . resolveChunks)
+  where
+    charScore :: Char -> Int
+    charScore ')' = 3
+    charScore ']' = 57
+    charScore '}' = 1197
+    charScore '>' = 25137
+    charScore _   = 0
+
+solution2 :: [String] -> Int
+solution2 = middle . sort . map score . completed . nonCorrupt
+  where
+    completed = map (completeChunks . fst)
+    nonCorrupt = filter notCorrupt . map resolveChunks
+    score :: [Char] -> Int
+    score = foldl' (\s x -> s * 5 + (charScore x)) 0
+      where
+        charScore :: Char -> Int
+        charScore ')' = 1
+        charScore ']' = 2
+        charScore '}' = 3
+        charScore '>' = 4
+        charScore _   = undefined
+    notCorrupt :: ([Char], Bool) -> Bool
+    notCorrupt (_, corrupt) = not corrupt
+    middle :: [a] -> a
+    middle [] = undefined
+    middle l  = l !! (length l `quot` 2)
+
+completeChunks :: String -> String
+completeChunks = map close
+  where
+    close :: Char -> Char
+    close c
+      | c == '(' = ')'
+      | c == '[' = ']'
+      | c == '{' = '}'
+      | c == '<' = '>'
+      | otherwise = undefined
+
+resolveChunks :: String -> ([Char], Bool)
+resolveChunks = foldl' resolve ([], False)
+  where
+    resolve :: ([Char], Bool) -> Char -> ([Char], Bool)
+    resolve (stack, broken) c
+      | broken = (stack, broken)
+      | isOpen c = (c:stack, False)
+      | close c == head stack = (tail stack, False)
+      | close c /= head stack = (c:stack, True)
+      | otherwise = undefined
+
+    isOpen :: Char -> Bool
+    isOpen c
+      | c == '(' = True
+      | c == '[' = True
+      | c == '{' = True
+      | c == '<' = True
+      | otherwise = False
+
+    close :: Char -> Char
+    close c
+      | c == ')' = '('
+      | c == ']' = '['
+      | c == '}' = '{'
+      | c == '>' = '<'
+      | otherwise = undefined
+
+-- Tests
+
+testInput = [
+  "[({(<(())[]>[[{[]{<()<>>",
+  "[(()[<>])]({[<{<<[]>>(",
+  "{([(<{}[<>[]}>{[]{[(<()>",
+  "(((({<>}<{<{<>}{[]{[]{}",
+  "[[<[([]))<([[{}[[()]]]",
+  "[{[{({}]{}}([{[{{{}}([]",
+  "{<[[]]>}<{[{[{[]{()[[[]",
+  "[<(<(<(<{}))><([]([]()",
+  "<{([([[(<>()){}]>(<<{{",
+  "<{([{{}}[<[[[<>{}]]]>[]]"
+  ]
+
+test1 = solution1 testInput -- 26397
+test2 = solution2 testInput -- 288957