HOW TO ENTER THE PRIZE PUZZLES

A fine Telegraph fountain pen and To enter by email: notebook will be awarded to the Send your scanned solution and sender of the first correct solution coupon, along with your postal opened from all entries received address, to: prize.puzzles@ to each puzzle. telegraph.co.uk with Sunday Toughie 8 or Sunday GK 1529 or EV 1531 or Griddler 1639 in the subject field.

To enter by post:

Send each entry in a separate envelope to: Sunday Toughie 8 or Sunday GK 1529 or EV 1531 or Griddler 1639,

Telegraph Media Group, 111 Buckingham Palace Road, London SW1W 0DT.

Closing date:

9am Wednesday, March 30. Solutions and winners in two weeks. Please allow up to six weeks for the delivery of your prize.