to 2350: Pieces

The unclued lights are classical French plays (‘PIÈCES’) by Corneille (9, 18, 21A), Molière (11, 23, and 21D/29) and Racine (1A, 24 and 25). The highlighted letters reveal the three playwrights’ names.
 
First prize Keith Norcott, Warden Hill, Cheltenham
Runners-up David Carpenter, Sutton Coldfield; Paul Davies, Reading, Berkshire