The cryptogram below was published by Swiss cryptologist André Langie in his book “Cryptographie” in 1918 (an English translation of this book was published in 1921).Langie commented on it as follows:

“I should hesitate to say that a cryptogram can be invented that will defy solution, provided it is of reasonable length and is not so involved and intricate as to make its use inexpedient. For practical purposes a cipher should be upon some system which can easily be committed to memory, and it should not involve any great expenditure of time in coding messages. The cryptogram on page 190 [this is the one below] has been ciphered in accordance with these rules on what I believe to be a novel principle, and will, I venture to think, require a great deal of pains and patience to solve. In the event of failure to solve the cipher, at a reasonable time after publication the method of ciphering and the solution may be obtained from the Marconi International Code Co., Marconi House, London, W.C. 2, or the Marconi International Code Corporation, 2236, Park Eow Building, New York, on receipt of a stamped and addressed envelope.”

The solution of the cryptogram is known.

BNHGYKZJ ELKOCWVD ARBGEXDZ

KLVEDEST ABLNYVSG VIWCOCRP

DZRKICXF YTANBECB ZBEWGBHI

GFIDWTCO WCWLADXE RYNQGXYJ

YVPJEGFA BLXUBNQC EZLGAPHI

HICKDROQ UZXHVEFG DQYNZNYW

SBKEQHJK ORLVDICM GIWFYKNJ

EBIZSOBQ SDATWRAL HVISTVAL

CAXSDPED RSBIXFEG YPTAHQPL

OPHYXHEJ ACBNUMOF VRDIRTLZ

SOBLJGET EDRXLAVB ICSZFEDL

FXEZEKLJ UTKYBSEN DNJOOKLA

TJEHSQLO WVFRUGUT REHXZBIT

ABEDZFYT SJUJGADV XFOBGHIZ

SJETVTYD VLHYZBUK BRAVENHL

CRDYFEZF ICJTFOVS ATLFINCK

SFTYZCBE DLTEMRGU KCSJAWEN

DRZLUSIX PEQCFAGF JEFGUDZW

EMNYCHCR IVTBIZBC MEQMYWLF

NTEFTRYD XPMAQBML ONBPANCZ

RJPARXEW DCYVSOSB MLIVCHUB

HLOCKLJE RTCLOCHZ AMUKRXLI

QUDCAKNS CYLABRFO JDSEXVYX

CUMKJOKS LASPBIQZ EVLJMANZ

WLFSONFR GICLMDUG HSAKAVZC

TLXINVHM EPZLFURS QUCKIBNX

UCNZLYDF ALKDENKI SCLURZUL

OTRIWVAV YCANTEDP XDUZVNIL

RABMVUCL FYRLGEXV ROFUGALN

VUKLXUDI FQRBONCD FECORXEL

KOTDRIQU GHNAZAJG BUPBRGID

DEZXFNOK KWITIBMD ASJYZNFE

NXDWIMCG KOWTFXEN ZYHDRAJX

KLWOCMTU ZECWTGOS JHPUDFND

CLIMJDTO LBVCUSUD QAWMWXEK

LOBLNEKU VJGSITVA HBARDTUZ

SEWQVAVL DUNCDLOX DFBYRGPG

BNEZVCPA VFEBNJCU FGXAPMOQ

AXRNYFLZ EQBUNCSI JKSULVQF

YCFHGUVG RSEWLFAJ AVJBOKYM

CRULMXJO ZTCBATRL UBACRTIM

WFCGIFXO ZCZLEGLM YZFIGLAS

STUDKVYN PSOJLCDE SFSWOTKM

FXCIBSGE NCDLIWDX OTLDNAJT

SEPFLICH CLATCNDU FRLJYDAJ

EXTASWEL TZUKBPFA RZLJOQUV

VARHITVO SRCWICHB YRTEDOQU

JAXGPBYN CTREZCVJ AKJMBOVQ

ODMBYCXZ DARVKINM CMEZLTVY

LUKRXJEP LUCKMRIG FEZJFMOT

KLAZHZYG VIRVDUXC JFANFESG

RSHNYSPY NCHUVEQR JTOFTSAR

WMYCHKBE ZBUTSUCR LJAFYBLS

YCHLBYVW ONDEJSQF ILMERJVU

PITVHCYZ NEFCTOGK BMURTLIS

CATGLSET CLYRTOCL HDIVSAQM

MDERMACK VYCFLNOL BUVLBNIG

CDSYFLON LCXODIGF HROBETZC

ICERHBYB NHOXDLJU GHVDANCD

NVJAXVWY