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The 100 Tactical Patterns You Must Know Workbook by Frank Erwich is an English-language chess tactics workbook in paperback form, created as a practical companion to The 100 Tactical Patterns You Must Know. It contains more than 500 carefully selected exercises built around 100 key tactical patterns.
What’s inside
The workbook is organised around 100 key tactical patterns, with exercises grouped to help you recognise recurring positions more easily. It is suitable for regular training and for revisiting material you have already studied, and each motif is briefly summarised so you can also work through it independently without the main book.
Used alongside the main title, it provides a structured way to practise tactical pattern recognition and review. It can also be used on its own as a focused training book for independent chess study.
About the author
Frank Erwich is a FIDE Master, a chess coach from the Netherlands and an editor at New In Chess. He is also the author of 1001 Chess Exercises for Club Players and 1001 Chess Exercises for Advanced Club Players.
If you are looking for the main reference book, see The 100 Tactical Patterns You Must Know.
Key details
- Product type: chess tactics workbook
- Title: The 100 Tactical Patterns You Must Know Workbook
- Author: Frank Erwich
- Language: English
- Format: paperback
- Page count: 336
- Content: more than 500 tactical exercises
- Structure: exercises organised around 100 key tactical patterns
Tangible precision
Each move strengthens curiosity, concentration, and self-confidence.

