# GC7J2FG Thorney Ramble – a QuarteR way down

June 29, 2019
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Today’s puzzle takes us to the south of England, and it looks to me like an obfuscated QR code. Not only is this hinted at in the title, with Q and R in upper case, but the binary starts with a string of seven 1s. That’s a great heuristic for spotting this kind of QR-obfuscation.

I’m using RStudio, so displaying an image on the screen is a doddle:

``library(magrittr)``library(stringr)``"1111111001001010101111111 1000001000111100001000001 1011101011101100101011101 1011101001110101101011101 1011101000100101101011101 1000001001000100001000001 1111111010101010101111111 0000000011101011100000000 1110111110111000111000100 1010010000110111001101011 1101111011001010100010101 0001000110010101000010011 0101111110010010011110000 0101010011001101111101100 1011111100001010101101111 0110100010010101010110001 1001111011011010111111011 0000000011011101100011010 1111111010010111101011011 1000001011010101100011000 1011101010010000111110011 1011101000011101001111010 1011101010010011111110101 1000001011010010001110010 1111111011011000010101111" %>%``  str_replace_all(" ", "") %>% ``   strsplit("") %>% ``   unlist() %>% ``   as.numeric() %>% ``   matrix(., ncol=sqrt(length(.))) %>% ``   image(axes=FALSE, col=c("#ffffff", "#000000"))``

That prints an output to the Plots window in RStudio:

Scanning the QR code with my phone reveals the coordinates; easy peasy!

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