- Level 5 - Easy
- Level 6 - Tricky
- Level 7 - Challenging
- Level 8 - Demanding
- Level 9 - Gruelling
- Level 10 - Mind Boggling
The Isis Adventure - Codes of the Diamond Isis - Book
|Types||Instruction Books, Misc Books|
|Dimensions||6.8 in x 5.2 in x 0.9 in / 17.2 cm x 13.3 cm x 2.3 cm|
The book is partly an autobiography, an insight into puzzle invention, success and tribulations of running an international business, stories of the adventure coin searches, pyramids, the puzzle series development and personal stories from some of you the adventurers.
In addition, throughout the book there are 4 hidden codes - the first adventurer to solve each code will be rewarded with a very special Gold and silver Isis, encrusted with 1 carat of 5 diamonds. Only 4 of these special diamond isis have been made and are valued at $25,000 each.
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