Letter frequency analysis is the way to crack these cryptograms. You can do a tally of how many times each cipher letter appears within each cipher. The most common letter is likely to be E, with T and A as other good options.
You can find more tips on how to crack cryptograms on the Cracking Codes & Cryptograms For Dummies Cheat Sheet.
Hard Letter Cipher 1.This cipher has been adapted from the report of one of the American militiamen who searched Major André after the Major left a meeting with Benedict Arnold.
This cryptogram has a keyword, which also fills in the blank word in the message.
X NDWGSVDT VXN IDGNKP SWGDAQMMU, EQJ AKQPT PKJVXPF QPJXM X IQMMDT KAA VXN EKKJ, RVDP RD TXNSKYDGDT JVWJ NKZDJVXPF RWN SKPSDWMDT XP VXN NJKSHXPF. X IQMMDT KAA VXN NJKSHXPF, WPT XPNXTD KA XJ, PDBJ JK JVD NKMD KA VXN AKKJ, AKQPT JVGDD NVDDJN KA IWIDG RGWIIDT XP WPKJVDG NVDDJ RVXSV RWN JXJMDT ‘_ _ _ _ IKXPJ’, WPT KP IQMMXPF KAA JVD KJVDG EKKJ WPT NJKSHXPF, X AKQPT JVGDD NXZXMWG IWIDGN.
Hard Letter Cipher 2.While long cryptograms may look intimidating, they’re often easier than short puzzles, because there’s more information in the letter patterns and frequencies.
DFH SGXHBYVHYDI GK DFH WBHIHYD ZEP FEXH DG ZHEU YGD VHBHUP ALDF GDFHB SGXHBYVHYDI, ALDF HVWHBGBI, NLYSI EYZ VLYLIDHBI, ORD EUIG ALDF DFH IHQBHD IGQLHDLHI AFLQF FEXH HXHBPAFHBH DFHLB RYIQBRWRUGRI ESHYDI, EYZ QEY ED DFH UEID VGVHYD RWIHD EUU DFH SGXHBYVHYDI' WUEYI. OHYCEVLY ZLIBEHUL
Hard Letter Cipher 3. Look for repeated words in this cipher, and you’ll soon have cracked it!
HJZS ZOKD GZS XDCR, ACCY GZS GNUR XDFS. HJZS ZOKD GZS PNIS FSY PCGP, ACCY GZS GNUR PNKDY FSY PKSY. HJZS ZOKD GZS UJCNR NADL HCIYU CM JFRIZY, ACCY GZS GNUR VCGGKR RJZGUZDOZU RC RJZ ADCIKZU CM DCOZ. GFIRKS DNRJZI WKSA, EI.
Hard Letter Cipher 4.This cryptogram contains some sage advice from a Founding Father.
AL TBVZRLBVD RB CJJ, AVR NHRNXCRL FNRO ILF; CHY JLR ROBDL ILF AL FLJJ RZNLY ALIBZL KBV QNSL ROLX KBVZ TBHINYLHTL. QLBZQL FCDONHQRBH
