Here’s a challenge from 2010. I sent this to Jarlve a good while back, but the solvers have improved so much, maybe it will be easy now?
The hint given is that it is song lyrics. Also, that it has a repeated 9-letter word. The latter is not quite correct – the repeated 9-letter word has a 1-letter difference in the repeat. Yes, I know the solution to this one. I cheated, I broke down and asked the author for it.
114 054 104 003 048 008 085 079 139 101 089 133 088 140 118 108 111 053 084 069 113 103 002 012 127 132 128 009 040 034 008 024 048 031 098 022 115 028 096 002 052 120 095 133 014 127 088 045 056 040 135 081 019 016 129 025 005 086 114 004 048 013 114 010 085 046 024 109 037 138 119 101 005 042 118 136 059 028 070 006 140 127 079 076 022 090 105 012 018 024 116 097 128 010 121 049 115 006 049 005 010 139 134 089 018 073 024 044 046 062 094 092 088 070 031 097 115 087 137 020 076 023 129 052 081 019 015 066 137 026 124 075 056 104 030 083 050 027 013 124 027 113 078 074 117 044 078 034 118 068 081 049 051 123 111 026 025 091 055 009 017 036 050 023 071 016 115 130 095 014 071 089 053 037 035 060 053 117 043 001 030 136 067 035 077 094 069 126 093 039 090 017 117 053 016 023 069 036 106 102 065 050 025 064 076 047 107 058 126 103 109 007 036 038 077 032 087 132 125 039 140 034 095 063 032 037 108 005 123 140 127 065 047 122 106 102 081 095 034 082 082 061 106 099 055 089 080 039 003 127 007 054 131 103 069 014 082 050 109 119 100 023 119 011 038 028 001 080 055 068 039 048 103 107 049 110 016 072 100 062 033 083 002 012 138 112 068 029 135 041 021 005 020 072 129 002 110 078 016 086 021 041 057 098 106 091 050 036 114 075 002 037 118 112 055 005 031 103 084 007
-glurk
EDIT: I think if anyone solves it, go ahead and post the solution. It’s not like anyone else is working on it.
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I don’t believe in monsters.
I’ve been trying to auto-solve this cipher for quite a while with no apparent succes.
It’s not a book code mr Glurk 
If not, I’ll try. (I will not be the my Morse method LOL) 
Marcelo
https://zodiacode1933.blogspot.com/
marclean-
It’s not a book code. It’s a normal homophonic cipher that just uses numbers instead of hand-drawn symbols. They are really both the same thing anyway, any cipher made of symbols can be made into numbers. And vice-versa.
I doubt you will have much luck trying to solve it by hand – it is fairly difficult – but I think some of these newer computer solvers may have a chance.
-glurk
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I don’t believe in monsters.
I’m not getting a good solution either. There are a lot high-scoring candidates, but none of them make any sense, and they all differ from one another (i.e. no stable solve). This is usually a sign that the multiplicity is just too high for the solver to grab onto something: there is too much freedom in the letter assignment, so the solver produces a lot of different equally plausibly sounding texts that all fit the cipher. Ciphers that use song lyrics (and all poetry in general) is also usually very hard to crack as their structure just doesn’t follow the normal English text structure. It might help to add poetry and song lyrics to the N-gram corpus, but there is just not as much of it (songs and poems are usually on the short side) to make much of a difference.
Here a "challenge" cipher similar to alanbenji’s multiplicity with a plaintext scoring similar to the 408. Which is, not very low, and not very high. I’ve not tried to crack it myself.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 31 39 59 60 61 62 57 63 64 14 65 66 67 68 69 70 71 72 73 74 75 76 77 78 67 79 36 80 81 82 83 84 85 86 87 88 89 76 90 91 92 93 94 1 74 95 96 97 98 99 10 100 86 101 102 103 104 105 106 27 107 108 109 110 60 111 26 53 112 105 113 114 75 115 6 116 117 118 96 119 120 121 122 123 124 125 35 126 127 9 128 129 21 18 130 131 132 133 134 135 104 136 137 138 139 5 15 140 30 20 19 34 13 122 12 141 104 2 107 23 33 128 26 70 126 50 37 142 143 144 12 10 14 4 17 71 89 54 42 102 29 44 19 51 32 135 5 40 98 43 79 83 145 7 144 86 146 31 3 147 76 55 53 64 11 88 24 8 22 38 62 3 110 125 72 102 61 112 48 85 35 148 65 66 149 29 69 119 120 75 115 57 78 47 80 93 63 150 16 130 106 101 132 25 32 117 114 39 45 121 141 133 68 134 41 58 77 81 95 48 94 1 36 82 46 97 56 87 136 117 72 96 127 6 89 47 49 116 67 143 59 28 40 84 135 88 74 52 91 72 124 91 92 136 30 111 2 56 73 23 131 18 109 105 88 140 24 67 99 123 118 91 70 71 90 133 128 139 76 149 60 104
