REDU format ruling
Pursuit Chaser

Nearest-era rulings (Tengu, Sept 2011) — no REDU-specific archive exists.
Card effect (current official text)When a Defense Position monster is destroyed by battle and sent to the Graveyard, inflict 500 damage to your opponent.
Rulings
- If Pursuit Chaser is in Defense Position when it is destroyed by battle, its effect does not activate.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the REDU forum — sourced change requests get reviewed.