diff --git a/src/projectEuler/question15.hs b/src/projectEuler/question15.hs
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+{-
+https://projecteuler.net/problem=15
+
+Starting in the top left corner of a 2x2 grid, and only being able to move to the right and down, there are exactly 6 routes to the bottom right corner.
+
+How many such routes are there through a 20x20 grid?
+-}
+module Main where
+
+import           Prelude hiding (Right)
+
+main :: IO ()
+main = print ans
+
+ans = 42
+
+limit = 20
+points = [(x,y) | x <- [1..limit], y <- [1..limit]]
+
+data Direction = Right | Down
+
+move Right (x,y) = (x+1, y  )
+move Down  (x,y) = (x  , y+1)