For DISCOUNT, click, https://www.instamojo.com/englsihrashmi/checkmate-writing-section-book-upsc-capf-ac-/?discount=checkmate
Other four books are
1. Checkmate Grammar Book
2. Checkmate Essay Writing book
3. Checkmate Reading Comprehension and Precis Writing Book
4. Checkmate Vocabulary book
DO NOT BUY ESSAY AND READING COMPREHENSION BOOK IF YOU ARE BUYING 'CHECKMATE WRITING SECTION' BOOK