2a:null 2b:["$","title",null,{"children":"Fallen Transponder Redux | Ada Lovecraft | Observable"}] 30:T7e6,md`# Fallen Transponder Redux I originally has some trouble with this because my data was wrong... However, I figured out the proper pattern and fixed the typos in the original text.... RENDEZVOUS ${transponder} ## Identify Keys There are groups of characters that are either \`(CCnC)\` (where \`C\` represents a letter and \`n\` represents a number) or \`(nnnC)\`... Specifically \`(00nC)\`. I bet groups of the latter represent our key. Let's identify them by using the number that comes before the letter to modify the ascii code represented by the letter by \`-n\`

${Object.keys(transponderKeyTest).map((key,idx) => `${idx}. ${key}: ${transponderKeyTest[key]}`).join('
')}

## Seems like the right track We have -most- of the letters used to spell RENDEZVOUS. Let's do all of the letters from A-Z this way. We'll use \`-5\` as the modifier because all of the "key groups" have 5 has the modifier.

${Object.keys(transponderKeys).map((key,idx) => `${idx}. ${key}: ${transponderKeys[key]}`).join('
')}

## Replace Encrypted Text with Ciphers

${decrypted}

## Hmmm... Not Quite Right Perhaps the pairs of \`nC\` in the \`(CCnC)\` groups should be modified as well. The first one I see is now \`(ZV3L)\`. The word should be \`rendeZVOus\` but is currently \`rendeZVLus\`. But, it turns out \`L+3 = O\`, so let's try that replacement.

${doubleDecrypted}

Then modify the \`((3000)cn)\` groups to add \`number of spaces = n\` and \`c.toUpperCase() + 3\`:

${tripleDecrypted}

Finally, convert all remaining \`(3000)\` groups to a single space:

${quadDecrypted}

## Split into lines

${lines.join('\n')}

It seems to be making a pictogram of some sort, but my decoding still isn't 100% correct... ` 31:T9a7,tripleDecrypted = { const startgrouprgx = /(\d{1,2})$\(3000$([a-z])(\d+)\)/g const grouprgx = /$\(3000$([a-z])(\d+)\)/g const startgroups = new Map() const endgroups = new Map() let matches while((matches = startgrouprgx.exec(doubleDecrypted)) !== null) { startgroups.set(matches[0].replace(/$/g,'\\(').replace(/$/g,'\\)'),{char: matches[2].toUpperCase(), spaces: Number(matches[3]), linenum: matches[1] }) } const startgroupKeys = Array.from(startgroups.keys()) const startgroupsreplaced = startgroupKeys.reduce((str, key) => { console.log('key:', key) const group = startgroups.get(key) console.log('group:', group) const keyrgx = new RegExp(key, 'g') const {linenum} = group const spaces = sequence(group.spaces, _ => ' ').join('') const char = String.fromCharCode(group.char.charCodeAt(0) + 3) const replaceWith = `${spaces}${char}` const newstr = str.replace(keyrgx, `${linenum}:${spaces}${char}`) console.log(newstr) return newstr }, doubleDecrypted) while((matches = grouprgx.exec(doubleDecrypted)) !== null) { endgroups.set(matches[0].replace(/$/g,'\\(').replace(/$/g,'\\)'),{char: matches[1].toUpperCase(), spaces: Number(matches[2]) }) } const endgroupKeys = Array.from(endgroups.keys()) const endgroupsreplaced = endgroupKeys.reduce((str, key) => { console.log('key:', key) const group = endgroups.get(key) console.log('group:', group) const keyrgx = new RegExp(key, 'g') const spaces = sequence(group.spaces, _ => ' ').join('') const char = String.fromCharCode(group.char.charCodeAt(0) + 3) const replaceWith = `${spaces}${char}` const newstr = str.replace(keyrgx, `${char}${spaces}`) console.log(newstr) return newstr }, startgroupsreplaced) return endgroupsreplaced.replace(/3000/g,' ') // const groupKeys = Array.from(groups.keys()) // console.log('groupKeys:', groupKeys) // const nextstr = groupKeys.reduce((str, key) => { // console.log('key:', key) // const group = groups.get(key) // console.log('group:', group) // const keyrgx = new RegExp(key, 'g') // const spaces = sequence(group.spaces, _ => ' ').join('') // const char = String.fromCharCode(group.char.charCodeAt(0) + 3) // const replaceWith = `${spaces}${char}` // const newstr = str.replace(keyrgx, `${spaces}${char}`) // console.log(newstr) // return newstr // }, doubleDecrypted) // return nextstr }32:[] 2e:{"id":"bb25f93c3c0dd42d","slug":"fallen-transponder-redux","title":"Fallen Transponder Redux","thumbnail":"b6dd97a75c0bf7d6eed372ead5316cdde472132292fc4198edf72ce6d18d69f8","access_level":"public","create_time":"$D2019-05-15T07:01:14.381Z","update_time":"$D2019-05-15T18:05:10.647Z","view_time":null,"first_public_time":"$D2019-05-15T13:04:43.375Z","fork":false,"stars":0,"starred":false,"owner":{"type":"team","id":"b8e744cb3af12423","login":"ada-lovecraft","name":"Ada Lovecraft","avatar_url":"https://avatars-next.observableusercontent.com/091aafb34cbcba1876310faf126f16c706722e67b11313c8660650e3282e67f3","tier":"starter_2024"},"version":486,"publish_version":486,"role":null,"authored":false,"authors":[{"type":"individual","id":"2d9e8c484abfe2fb","login":"ada-lovecraft","name":"Ada Lovecraft","avatar_url":"https://avatars-next.observableusercontent.com/091aafb34cbcba1876310faf126f16c706722e67b11313c8660650e3282e67f3","tier":null}],"members":[{"type":"individual","id":"2d9e8c484abfe2fb","login":"ada-lovecraft","name":"Ada Lovecraft","avatar_url":"https://avatars-next.observableusercontent.com/091aafb34cbcba1876310faf126f16c706722e67b11313c8660650e3282e67f3","tier":null,"role":"editor"}],"comments":[],"custom_thumbnail":false,"trashed":false,"subscribed":null,"forks":1,"collection":null,"type":"notebook","body":{"title":"Fallen Transponder Redux","cells":[{"id":0,"value":"$30","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":290,"value":"md`${transponder}`","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":354,"value":"transponderKeyTest = {\n const keyrgx = /\\(00(\\d)([A-Z])/g\n const keys = []\n let matches\n while((matches = keyrgx.exec(transponder)) !== null) {\n const original = matches[2]\n const modifier = Number(matches[1])\n const cipher = String.fromCharCode(original.charCodeAt(0) - modifier)\n keys[original] = cipher\n }\n return keys\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":372,"value":"transponderKeys = sequence(26, x => String.fromCharCode(x+65)).reduce((agg, char) => ({...agg, [char]: String.fromCharCode((char.charCodeAt(0) - 65 + 21) % 26 + 65)}),{})","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":365,"value":"decrypted = transponder.split('').map(\n char => !!transponderKeys[char] ? transponderKeys[char] : char\n).join('')","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":382,"value":"doubleDecrypted = {\n // replace beginning and end\n let pairsrgx = /(\\d)([A-Z])/g\n const pairs = []\n let matches\n while((matches = pairsrgx.exec(decrypted)) !== null) {\n pairs.push({mod: Number(matches[1]), char: matches[2]})\n }\n\n const ciphers = pairs.reduce((agg, pair) => {\n const charCode = pair.char.charCodeAt(0)\n const charNum = charCode - 65\n \n return {...agg, [`${pair.mod}${pair.char}`]: String.fromCharCode((charNum + pair.mod) % 26 + 65)}\n },{})\n //return ciphers\n return Object.keys(ciphers).reduce((str, key) => str.replace(new RegExp(`${key}`,'g'), ciphers[key]), decrypted)\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":403,"value":"$31","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":445,"value":"quadDecrypted = {\n const spacergx = /3000/g\n return tripleDecrypted.replace(spacergx, ' ')\n}","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":220,"value":"linerxp = /\\d{1,2}:/g","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":219,"value":"lines = quadDecrypted.split(linerxp).slice(1)\n","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":4,"value":"transponder = `1((3000)o20)(JS0I)((3000)b2)(EA3Q)((3000)r20)2((3000)p18)(WJ0S)(3000)(IJ0E)(3000)(AT3W)(3000)(XW3G)((3000)k18)3((3000)a16)(JE0A)(3000)(TZ0X)(3000)(WJ0S)(IJ3B)(3000)(AT3W)(3000)(XW3G)((3000)k16)4((3000)a14)(JE0A)(3000)(TZ0X)(3000)(WJ0S)((3000)a4)(JE3X)(3000)(TZ3U)(3000)(WJ3P)((3000)a14)5((3000)b12)(EA0T)(3000)(ZX0W)((3000)b6)(00Q7)((3000)a6)(JE3X)(3000)(TZ3U)((3000)o12)6((3000)b10)(SI0J)(3000)(EAOT)((3000)r4)(XW0J)(SI3G)((3000)w4)(AT0Z)(XW3G)((3000)k3)(IJ3B)(3000)(AT3W)((3000)p10)7((3000)o8)(JS0I)(3000)(JE0A)((3000)l4)(ZX0W)(JS3F)(JE3X)(3000)(TZ3U)(WJ0S)(3000)(IJ0E)(AT0Z)(XW3G)((3000)k3)(IJ3B)(3000)(AT3W)((3000)p8)8((3000)o6)(JS0I)(3000)(JE0A)((3000)l4)(ZX0W)(005J)(005S)(005I)(005J)(EA3Q)(ZX3T)(3000)(JS0I)(JE0A)(005T)(005Z)(005X)(005W)(JS3F)((3000)b4)(EA3Q)(3000)(ZX3T)((3000)b6)9((3000)k4)(IJ0E)(3000)(AT0Z)((3000)p12)(WJOS)(005I)(005J)(EA3Q)((3000)02)(XW3G)(3000)(SI3G)((3000)w4)10((3000)s5)(TZ0X)((3000)o32)(JS3F)((3000)b5)`","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":168,"value":"sequence = (count, fn) => [...Array(count).keys()].map((x, i, arr) => fn(i, arr))","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"},{"id":47,"value":"stringify = x => x instanceof Array ? '```' + x.join('\\n\\n') + '```' : JSON.stringify(x, null, 2)","pinned":true,"hidden":false,"mode":"ojs","author":"$undefined","summary":"$undefined"}],"files":"$W32","stdlib":"1","titling":"auto"}} 2f:"$2e:body"