CHALLENGE 1943.4a

(LETTER FROM BOB TO ALICE)

.Ρ=Σ/Ν--Ν-Ξ.Ρ/Τ.ΞΦ-Ψ/

.Λ=Ν.Ν.ΘΨΝ-.+Φ=+ΤΦ=+Τ

.ΞΚΣ/Ρ=+Τ.Ρ=Σ/ΡΣ.ΔΝ.ΦχΛ.

Ζ-ΞΝ=+Χ-Σ=ΞΦ.χΛ.Μ.Λ.Κ=Μ=+

-Δ/Κ.Φ=+Τ.Χ:Τ/ΤΛ-ΧΦ/Ν.Ψ

Λ.ΨΞ.Χ+Δ/=Ν/Τ=Μ=Φ=.Ξ.Γ.Μ/

\\.Γ.Π/Π=Λ+Τ:Ν.Γ.Π:

CHALLENGE 1430.1

(...AND THIS IS IMPOSSIBLE TO DECIPHERING WITHOUT THE KEY.WHICH IS UNKNOWN TO YOU ALL.)                           33-18-4-20-23-4-53-20-35-31

74 6-28 1-30-15 61-46-5-7

4-11-16-5 2-5-61-1-5 61-4-7

1-21-4 61-63-4-8-5-7-4

68-4-25-79 67-43 60-67-79-67-68-60-17

61-63-5 7-60-5 4-48-4 93-60-7

4-7-4-1-83-8-7-27-60-63-0

1-4-6-79 63-90

CHALLENGE 1619.1

557751 5575551557577 571557 715

571155 5751155 77155 511115 177577

715551155751 7575775 71155575 551115155

177751 115 517557117 155 515115517 557715

751115575177 5771155511 11517 7577715 551155 751 757577517155 51111555 7555

11151551771799

CHALLENGE 1511.1

33|43||9472|6522|61|43|

21|22||84|9661|72|8422|62||7622|

22|53||66

|96|66|65

|8572||94|66 etc