Gann's Square of Nine is one of the unique tools

How to Use It in Trading (Step-by-Step Simplified)
Method 1: Find Support/Resistance from a Major High or Low
suppose you stock price is 100
Take a significant high or low price (e.g.,TATASTEEL all-time high was ~ 187/-).
Find the closest number in the Square of 9 (or enter the price into a Gann Square of 9 calculator).
Move along the key angles to find the next levels.

Example (very simplified):
Suppose current price = 100
Square root of 100 ≈ 10 (10 X 10)
To find next major resistance at 180° (opposite side):
Add 2 → 12 → 12²(12 X 12) = 144 → so 144 is strong resistance
Add another 2 → 14²(14 X 14) = 196 → next big level
To find support below:
Subtract 2 → 8² (8 X 8) = 64 → strong support

Rule of thumb (the famous one every Gann student memorizes):

(TATASTEEL 2004–2025)
JUN 2024 HIGH ≈ 184.60 → √184.60 ≈ 13.58 → 13.58² = ~184.60
Less 1 (45°) → 12.58² = 158 → minor
Less another 1 → 11.58² = 134 ( last time act as support zone)
but remember round figure Square Root is impotent point. just watch
Square root (13-2) =11 - 11² = 122 price level work as a strong support on Dec,2024.
To go UP one full 90° → add 2 to the square root, then square it
To go UP one full 180° → add 4 to the square root, then square it
To go DOWN → subtract instead of add

Quick Cheat Sheet (Most Used Moves)
Move Formula Example (from 100) (What I call)
Next 45° up (√price + 1)² (10 + 1)² = 121 (Hurdle point)
Next 90° up (√price + 2)² (10 + 2)² = 144 ( Resistance point)
Next 180° up (√price + 4)² (10 + 4)² = 196 (New Breakout Point)
Next 360° up (√price + 8)² (10 + 8)² = 324 (Final Target)
Next 90° down (√price – 2)² (10 – 2)² = 64 (pure profit booking point)

These levels (64, 121, 144, 196, 324, etc.) very often act as support/resistance.


Method 2: Time & Price Squaring
Gann said when Time = Price (in square of 9 terms), the market reverses.
Example:
A low happened at price 25 (which is 5²)
49 days later = 7² → if price also reaches near a 7² level (49 area), high probability of reversal.