In the extra workbook there are 54 pages with exercises, which means as many as 54x12=648-25 (drawings) = 619 positions. At the beginning come the exercises with the familiar items from Step 3:
- double check
- double attack
- discovered attack
- defending against a double attack
- defending against a pin
- elimination of the defence (capturing, luring away, chasing away)
The last 26 pages contain tests. There is also a reminder with hints how to proceed with the tests.