"The Beast Inside" - Solver for the cryptoanalysis book to be found in the new house

README.md

This is a quite simple try to solve the puzzle from the cryptoanalysis book from the "The Beast Inside" game.

# python solve.py
N	R	DKKLAJ	HOOPEN
A	Z	TUFSMJOH	STERLING
W	Z	HGXBO	KJAER
K	Y	ZQDUVMZM	NERIJANA
O	S	GQPHAOW	KUTLESA
L	P	NQPDE	RUTHI
S	X	EHXXMZZ	JMCCREE
J	T	FUFFUH	PEPPER
V	O	ZVVAFZOLLW	SOOTYSHEEP
C	O	QVIFQVWZZ	CHURCHILL
H	J	FCJBCLFCPX	HELDENHERZ
F	R	XSOBBSHHS	JEANNETTE
Q	P	QBSBCPMJT	PARABOLIS
N	Q	TLICMOBAXQLO	WOLFPREDATOR
E	C	VJGFKDDWM	THEDIBBUK
W	A	ZQJCAKJIWOPAN	DUNGEONMASTER
G	B	XHZRGFLGJSOFRNS	SCUMBAGBENJAMIN

input.txt

N R DKKLAJ
A Z TUFSMJOH
W Z HGXBO
K Y ZQDUVMZM
O S GQPHAOW
L P NQPDE
S X EHXXMZZ
J T FUFFUH
V O ZVVAFZOLLW
C O QVIFQVWZZ
H J FCJBCLFCPX
F R XSOBBSHHS
Q P QBSBCPMJT
N Q TLICMOBAXQLO
E C VJGFKDDWM
W A ZQJCAKJIWOPAN
G B XHZRGFLGJSOFRNS

solve.py

def solve(ch1, ch2, crypt):
    rot = ord(ch1) - ord(ch2)
    out = []

    for chs in crypt:
        nord = ord(chs) + rot
        if nord > ord('Z'):
            nord = nord - 26
        elif nord < ord('A'):
            nord = nord + 26

        out.append(chr(nord))

    print('{ch2}\t{ch1}\t{crypt}\t{solution}'.format(
        ch1=ch1,
        ch2=ch2,
        crypt=crypt,
        solution=''.join(out),
    ))


def main():
    with open('input.txt') as f:
        for line in f:
            (ch2, ch1, crypt) = line.strip().split(' ')
            solve(ch1, ch2, crypt)


if __name__ == '__main__':
    main()