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This month we present another Sudoku puzzle with a twist—it uses letters instead of digits and hidden within it is the name of a kind of document sometimes written by software developers.

XXX
XOX
IXT
XFX
MXA
OXX
XXX
XXX
MAE
EMX
NXX
XXI
NXX
XAX
XXT
TXX
XXF
XMN
FIA
XXX
XXX
XXO
SXF
XEX
NXS
XIX
XXX

Simply fill in the empty cells with the nine letters A, E, F, I, M, N, O, S, and T, so that each row, column, and small square contains each of the nine letters once.

Answer to Last Month’s Quiz

Each of last month’s quotations had something to do with programming or computers. They were encrypted with a simple letter-substitution cipher, a different cipher for each quote. Punctuation and numerals were not encrypted, and each cryptoquote included at least one numeral.

Cryptoquote

Decrypted quote

“Dgy mbsld 90% pm dgy ipfy tiipavdl mps dgy mbsld 90% pm dgy fyjyzpcnyvd dbny.  Dgy syntbvbvu 10% pm dgy ipfy tiipavdl mps dgy pdgys 90% pm dgy fyjyzpcnyvd dbny.” -Dpn Itsubzz

“The first 90% of the code accounts for the first 90% of the development time.  The remaining 10% of the code accounts for the other 90% of the development time.” -Tom Cargill

“Msnibh tlltr wdhwkym mftlf tf 0 nl 1?  Qr knqvlnqwmy ng 0.5 jtm lyeykfyh jwfsnif, W fsnixsf, vlnvyl kndmwhyltfwnd.” -Mftd Zybbr-Pnnfby

“Should array indices start at 0 or 1?  My compromise of 0.5 was rejected without, I thought, proper consideration.” -Stan Kelly-Bootle

“Kn xti pmxcsclkdi tpj ncddcvij xti wpsi jigidczsirx uoudi pw xti ucszmxih, p Hcddw-Hcoui vcmdj xcjpo ucwx $100, bix 1,000,000 skdiw zih bpddcr, prj iqzdcji crui p oiph, fkddkrb igihocri krwkji.” -Hclihx Q. Uhkrbido

“If the automobile had followed the same development cycle as the computer, a Rolls-Royce would today cost $100, get 1,000,000 miles per gallon, and explode once a year, killing everyone inside.” -Robert X. Cringely

“Uswj rs rvcgi sz cr, rvjhj nhj nfhjnkx 1,000,000 wsgijxl sg 1,000,000 rxtjbhcrjhl, ngk Yljgjr cl gsrvcgp fcij Lvnijltjnhj.” -Mfnch Vsypvrsg

“Come to think of it, there are already 1,000,000 monkeys on 1,000,000 typewriters, and Usenet is nothing like Shakespeare.” -Blair Houghton

“Ewn lsed’v lnzeyfg ljbcieny ejgk dji?  Y2K2, dji uzjr aneeny ewfz ej eyive f veyfzhn ljbcieny!” -L3CJ

“The city’s central computer told you?  R2D2, you know better than to trust a strange computer!” -C3PO

“Uli zf tmfvmrwwnmc rburic wjx kt Lrbbfunng rgz Olmjcqwrc? Ynorkcn Foq 31 ndkrbc Zno 25.” -Rgfgiwfkc

“Why do programmers always mix up Halloween and Christmas? Because Oct 31 equals Dec 25.” -Anonymous

“1d x0s z4j n34e 7p15, x0s n34iix j33e 70 637 4 i1d3.” -Gjhjxlhst

“1f y0u c4n r34d 7h15, y0u r34lly n33d 70 637 4 l1f3.” -Anonymous