diff --git a/tests/3_lis.js b/tests/3_lis.js
deleted file mode 100644
index 3745fa7..0000000
--- a/tests/3_lis.js
+++ /dev/null
@@ -1,25 +0,0 @@
-module.exports = {
-  prompt: `
-// Write an async JavaScript function 'findLISLength' that finds the length of the Longest Increasing Subsequence (LIS) in an array of numbers.
-// - The function must accept an array of numbers.
-// - You MUST implement the efficient O(n log n) algorithm.
-// - You MUST use a dynamic import() to load the 'd3-array' library from a CDN and use its 'bisectLeft' function to achieve O(n log n) complexity.
-// - The function should return a single number: the length of the LIS.
-`,
-  harness: `
-const assert = require('assert');
-async function runTest() {
-  const nums = [10, 9, 2, 5, 3, 7, 101, 18, 4, 6];
-  try {
-    const length = await findLISLength(nums);
-    assert.strictEqual(length, 5, "Test Failed: LIS of [10,9,2,5,3,7,101,18,4,6] should be 5 (e.g., 2,3,4,6,18).");
-    console.log("Test Passed!");
-    process.exit(0);
-  } catch (e) {
-    console.error("Test Execution Error:", e.message);
-    process.exit(1);
-  }
-}
-runTest();
-`
-};