diff --git a/README.md b/README.md
index f84b927..fb0f13e 100644
--- a/README.md
+++ b/README.md
@@ -29,6 +29,7 @@ Example puzzles live in `sudoku-examples/`. For instance:
 
 ```sh
 cargo run -- sudoku-examples/hard.sudoku
+cargo run -- sudoku-examples/extreme.sudoku
 ```
 
 ## Project Decomposition
diff --git a/sudoku-examples/extreme.sudoku b/sudoku-examples/extreme.sudoku
new file mode 100644
index 0000000..746624e
--- /dev/null
+++ b/sudoku-examples/extreme.sudoku
@@ -0,0 +1,9 @@
+0 8 0 6 0 0 0 0 0
+4 0 0 0 0 0 9 0 0
+0 9 0 5 0 1 0 8 0
+0 0 2 0 0 0 0 0 7
+0 4 0 9 0 8 0 5 0
+0 0 0 0 3 0 0 0 0
+0 0 0 0 4 0 0 3 0
+7 0 0 1 0 3 0 0 5
+0 1 0 0 6 0 0 0 0