Keyhole is a technique that you can use to improve your F2L fast. It provides an insight into Advanced F2L and can cut many seconds off your time. It makes your F2L more efficient and reduces the number of moves that it takes to complete your overall solve, making you faster and your solves more efficient. You should make sure to learn keyhole as it will help you in solving many different F2L cases. After you learn keyhole, you can use it to learn pseudoslotting and other advanced F2L techniques. It is a bit harder to look ahead with keyhole, but with practice, it becomes very easy. You should not rely on it too much and make sure to use it only when you see a case like the one I showed you in the video.
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