I'm not very good when it comes to LeetCode or Zetamac (both games used surprisingly often as benchmarks for intellectual performance), so I wanted a way to practice with friends.
isobattles.vercel.app is a website I made over the weekend where you can play against your friends in LeetCode and Zetamac (looking to add some quant questions too). Built using Modal Websockets and used Codeforces questions as a LeetCode substitute—unfortuantely, there are no open-sourced datasets containing LeetCode problems :(