Cryptic Cross Numbers
Extending the principle of cross numbers, these puzzles aim at those of above average mathematical ability, particularly those who enjoy games of strategy. Recreational mathematicians will really enjoy them.
Written from a classroom perspective, the puzzles focus on key aspects of the curriculum and are graded according to difficulty. Solved deductively, the puzzles difficulty can be moderated by using hints provided. Answers are also provided for teacher or selfmarking.
This book is also in the Tarquin Select Thinking Mathematically package with 100s of other resources for a TINY fee.