Practice
Logical
Coding and decoding practice
A word or number is encoded by a rule — shifting letters, reversing, or substituting. Find the rule from the example, then apply it.
0 of 108 done
Work out the code
In a certain code, TREE is written as EERT. How is MOON written?
Pick an answer
The first 10 questions of each category are free.
Tips for Coding and decoding
- Write the alphabet positions (A=1 … Z=26) for the example word and its code.
- Compare letter by letter: is the shift the same for every letter?
- Check reversed order and alternating shifts if a simple shift doesn't work.