Sun Tzu's Terrain Analysis (Nine Situations)

Sun Tzu identified nine strategic terrains, each demanding different behavior. 'Dispersive ground' (own territory) — don't fight. 'Frontier ground' — keep moving. 'Key ground' (valuable to both sides) — race to occupy first. 'Intersecting ground' (junction of routes) — form alliances. 'Serious ground' (deep in enemy territory) — secure supply lines. 'Desperate ground' (fight or die) — commit totally. The genius: strategy should be determined by terrain, not by desire. Reading terrain correctly matters more than having a plan.

When to use it

When entering a new competitive situation and needing to determine strategic posture. When a strategy isn't working and you suspect you've misread the situation. When choosing between aggressive and conservative approaches. When advising others on handling their competitive position.

How it can help

Map business situations to terrain types. A startup in an incumbent-dominated market is on 'serious ground' — secure resources, avoid pitched battles. A company being disrupted is on 'desperate ground' — half-measures fail. A product at the intersection of multiple markets occupies 'intersecting ground' — partnerships are essential. The framework prevents applying wrong strategies to wrong situations.