Time for a little mathemagic! Choose any five cards from a pack and show four of them to your partner. How can they work out the fifth?
I was looking at the number plate of a car parked outside. Using my special code S208VBJ adds to 65. Can you crack my code and use it to find out what both of these number plates add up to?
Find the frequency distribution for ordinary English, and use it to help you crack the code.
Instead of featuring a game this month, we have invited James Grime of the Enigma Project to create a code challenge.
You can watch the video here or visit James's YouTube channel and watch it there.
Here is the cipher text:
VA BT LS EG OT XK PB BH CI FV GA YC QG BP UW IH QD OE DI HL CQ YC QG BP EI LZ GA GB IZ PS AZ DQ NI CY UY EA AI UA BF BV OV QA ZS DP QD PG QM PS WL QY DH BD TL VZ PL LW AH GZ BP IM NI KP DZ QU DH FP CI FV RT SB BP BV XO BE BQ PG KO GE IK KO NA OS DG DG DA OX PO GE LZ GA OP FL WU PU UT WF BV IC HF EQ SP NA UX DC BV
Here is the crib:
"EXTRA LARGE FRENCH FRIES"
James has now produced a video solution to his code challenge.