CHALLENGE 2618.1.2

(NEW MESSAGE TO ''CICADA 3301 TEAM'')

if 12-112-1012-412-1112-412+312+212+12

then what??? 

CHALLENGE 2627.1.2

(NEW MESSAGE TO A.C.A. FROM BOB)

MLX LDC MMD DVL CMD

DIV MIV MVL XMD VLX CLX

VVL DCI LXM LXM CCI LCI

CXM DLX DDC LIV XVL LLX

XMD DVX CLX MXM MVL 

CMD VLX DLX DXMLMD CVL

XLX IIV DIV CMD VLX MVL

CHALLENGE 2636.1.2

(HERE YOU SEE A BOB'S CRYPTOGRAM THAT IT IS UNABLE TO REED BY ANYONE WITHOUT  THE KNOWLEDGE)

ΕΥΕΦΝΘΧΕΩΦ

ΒΧΚΥΜΒΚΩΧΝ

ΜΔΕΙΓΑΗΚΓΩ

ΕΟΜΕΒΜΕΒΕΕ

ΘΥΑΙΕΦΨΝΓΝ

ΙΚΙΩΝΨΦΚΑΔ

ΕΜΓΥΜΥΜΙΕΓ

ΧΓΕΓΑΡΕΥΑΩ

ΕΧΚΘΚΨΚΣΙΜ

ΘΝΣΗΚΒΔΓΝΘ

[SOME HELP]

0=35444546

U=13-11029425153-510636869738185-810

99-103-108

CHALLENGE 1502.1

(NEW MESSAGE TO A.C.A. FROM 1799)

XXYXXYXYXYYXYXXXY

YXYYXYXXXXYXXYXYY

XYYXYXYXXYXYXXYXY

XYYYXYYXXXXYXXXYY

YYXYYYYYXXYXXXXYY

YXXYYYYXXYYXXYXXX

XYXXXYYYXXXXXYXYX

YYYYXYYXYXYYYYXYX

XYXXYXXXYXIXYXXXX

YXYXYXYXXXXYYYYXX

YYXXXYXXYXXXXYXYX

YYXYYYYYXXYXXXYYX

8S9S9S9S98S988S9SS88

SS88SSSS888S688SSS99

8886S88S6S88888S8S868

S68