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README.md

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 # Chandrayaan 3 TDD Assessment
 
 ## Assessment Link
+
 [Chandrayaan 3 TDD Assessment](https://blog.incubyte.co/blog/chandrayaan-3-tdd-assessment/)
+
+## Intuition
+We can not determine the correct position in 3-D space by only maintaining a single side of Chandrayaan.
+
+At each step, we maintain two sides of Chandrayaan (the **direction** side and the **facing** side, which is perpendicular to the direction side) to determine the final position and direction of Chandrayaan in 3-D space.
+
+- **Move Forward/Backward**
+
+  Moving forward involves moving forward by 1 and moving backward by 1 in the **respective axis** in the pointing direction, while the facing side remains the same.
+
+- **Turn Left/Right**
+
+  When turning left/right in the **horizontal** plane, i.e., when the facing side is either U or D, Chandrayaan turns in its respective direction, and the **facing side remains unchanged**.
+
+- **Rotate Up/Down/Left/Right**
+
+  When rotating in any direction in the **galactic** (vertical) plane, both the direction side and the facing side change.