The AimGeometry Blog
Long-form articles on the geometry, physics, and tactics behind pool, 9-ball, and snooker. Each post pairs with one or more of the interactive lessons in the app.
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Aiming
How to Aim in Pool: Ghost Ball vs Contact Point vs Fractional Aim
The three methods every pool player should know, what each one is actually doing geometrically, and which one to use when. With diagrams.
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Cue Ball Control
The 30° Rule: Why Your Cue Ball Doesn't Always Follow the Tangent
The 90° tangent rule is what tutorials teach; the 30° rolling-ball rule is what pros actually use. The difference, in detail.
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Banks
Pool Bank Shots Made Simple: The Diamond Midpoint Formula
One arithmetic shortcut — (start + target) / 2 — that turns 1-rail bank shots from black magic into geometry.
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9-Ball Tactics
The 9-Ball Push-Out Rule: When to Use It and When Not to
The unique 9-ball rule no amateur uses correctly. WPA Rule 2.4 explained, plus the strategic theory.
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Snooker
Snooker Safety Play for Pool Players: 5 Patterns to Steal
Pool players rarely play safety. Snooker players play half a frame of it. Five safety patterns every cue-sports player should have in their toolkit.