diff --git a/hfiar.cabal b/hfiar.cabal
--- a/hfiar.cabal
+++ b/hfiar.cabal
@@ -1,5 +1,5 @@
 name: hfiar
-version: 2.0.2
+version: 2.0.3
 cabal-version: >=1.6
 build-type: Custom
 license: BSD3
diff --git a/src/HFiaR.hs b/src/HFiaR.hs
--- a/src/HFiaR.hs
+++ b/src/HFiaR.hs
@@ -82,8 +82,11 @@
                     Right newGame -> put newGame >>= return . Right
 
 -- | Try (i.e. without actually doing it, returns the result of) dropping a tile in a column
-tryDropIn :: Monad m => Int -> HFiaRT m (Either HFiaRError Game)
-tryDropIn c = get >>= return . doDropIn c
+tryDropIn :: Monad m => [Int] -> HFiaRT m (Either HFiaRError Game)
+tryDropIn cols = get >>= return . tryDropIn' cols . Right
+    where tryDropIn' [] res = res
+          tryDropIn' _ (Left err) = Left err
+          tryDropIn' (c:cs) (Right g) = tryDropIn' cs $ doDropIn c g
 
 doDropIn :: Int -> Game -> Either HFiaRError Game
 doDropIn _ Ended{} = Left GameEnded