In Clan War Leagues, one failed triple can decide the outcome. Your objective is not only to survive random attacks, but to force strong opponents into low-confidence plans. This is why anti-3-star architecture and uncertainty are more valuable than pure anti-farm choices.

A good CWL base offers no free entry, no predictable blimp line, and no simple hero path to core defenses. If your base gives one obvious route, experienced attackers will practice it and remove it consistently.

Running the same layout every war is a major mistake. Opponents can scout your defenses and copy a proven plan. Keep at least three tested war layouts per level: one anti-air emphasis, one anti-ground emphasis, and one balanced anti-2-star fallback.

Rotation only works when each design has different trap logic. If all your bases place traps in similar spots, skilled players still get easy reads. Rotate structure and trap philosophy together.

Many clans over-centralize value, making freeze spells too efficient. Others place heroes where they can be removed early by queen charge without trading enough time. Another frequent issue is weak back-end coverage after the first compartment falls.

Avoid overusing internet-famous templates without adaptation. Public bases become solved quickly. Even small edits to pathing, sweeper angles, and compartment access can shift outcomes significantly.

Top positions should prioritize anti-3-star designs that punish high-skill attacks. Mid-map positions benefit from robust anti-2-star or anti-air hybrids because attackers often take safer plans there. Lower positions can use pressure layouts that create cleanup failures and time traps.

Base assignment should reflect your roster and expected matchups. A great design in the wrong slot loses strategic value. Review opponent tendencies and map your strongest layouts where they are most likely to create stars denied.

After every war day, collect hit rates by attack type and entry side. Identify where triples happen most often and whether they rely on the same spell timing or siege route. Then make one controlled change and re-test next day.

CWL defense is a process. Clans that document failures and iterate calmly perform better than clans that panic-swap layouts after one bad war.