Monday, December 23, 2019

CHALLENGE 2906.1

(BOB'S VERY OLD CRYPTOGRAM)
12 78 87 31 68 73 54 48 52 96 94 42
52 93 41 44 96 10 21 27 39 61 44 96
58 88 96 16 76 78 87 37 44 31 67 38

Saturday, December 21, 2019

CHALLENGE 0566.1.2

(TO SECRET SERVICES OF THE WORLD)
:S 13,143,1 823 87,168,19 65.5 58,1112791
87,179145 21;11 :9 66.168,19 65.5 58,1112791
:9 66.1791451799

CHALLENGE 0422.5

(BOB TO ALICE)
13579 R74G3263 G884 G83G0843 G228
R12G58S472 G83G98S328 R66G63S97G97
06 G23G0843 G228 R12G58S472 06 G23G98S328C1

CHALLENGE 0422.4

(BOB TO EXPERTS)
#7# S29CA5 J45 I8A8C5 C88 L9F319A
I897W88 R3B6 9B C9A8C5 C88 L9F319A
9B C997W888A 71C7 39F3708 C88 9D
39F3708 C88 #7# 01W54 F45 N3F7 72N4F3578
9A