Meet your coaches
Talk through the problem while you code. Guest text is free. Hosted voice is the Own Words Pack.
Reverse Bits
Reverse Bits rewards precision: narrowing the search space correctly is the whole game. It's a great warm-up that builds boundary precision without a ton of moving parts. The trap is boundary drift—one wrong low/high update can loop forever or skip the answer.
Chat with Fin or Coco right now on mobile.
Start talking through the problem here. Switch to desktop when you're ready to code and run tests.
Start coaching sessionMeet your coaches
Talk through the problem while you code. Guest text is free. Hosted voice is the Own Words Pack.
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Code + tests need a desktop
Chat works on this phone. Email yourself a link when you want the editor and tests.