The Abigails went to Toronto over Easter 2017 and solved a couple of puzzles beforehand. One of them was https://coord.info/GC6WH8T Baldwin Brain Buster. I really liked the beautiful simplicity of the puzzle, especially as I could actually work it out!
However, on the day we were due to collect it the cache was archived! So I wrote to the CO and asked if I could use the puzzle in London.
The location of the virtual element is on Baldwin Street in London just as the original was in Baldwin Street in Toronto. There is no need to visit this location in London (although I would recommend Baldwin Street in Toronto!). The actual cache is a little walk away.
PUZZLE
The puzzle is a logic puzzle, where each of the 9 letters must be solved to reveal their corresponding number. There is no zero, the numbers are 1 through 9, and there are no repeating numbers. Below is the puzzle:
A>B>C
A+B+C=DE
DE+D+E=FG
FG+F+G=HJ
Using the numbers you have calculated the final is at:
N 51° 31.BGE' W 000° 0B.JCA'
Thanks to ritskese for the cache in Toronto and allowing me to use the puzzle here in London.