{
  "active": true,
  "exercises": [
    {
      "core": true,
      "difficulty": 1,
      "slug": "hello-world",
      "topics": [
        "control-flow-(conditionals)",
        "optional-values",
        "strings",
        "text-formatting"
      ],
      "uuid": "4756cfc9-7509-4783-8be7-60e3376b8256"
    },
    {
      "core": false,
      "difficulty": 1,
      "slug": "two-fer",
      "topics": [
        "strings",
        "control-flow-(conditionals)"
      ],
      "unlocked_by": "hello-world",
      "uuid": "5f3d1326-f0c5-44a6-b90a-6af3b7d455f1"
    },
    {
      "core": true,
      "difficulty": 1,
      "slug": "leap",
      "topics": [
        "booleans",
        "integers",
        "logic"
      ],
      "uuid": "0c231a1c-55f7-47b6-8a54-ccae4ab0c65b"
    },
    {
      "core": false,
      "difficulty": 2,
      "slug": "reverse-string",
      "topics": [
        "loops",
        "for",
        "strings"
      ],
      "unlocked_by": "leap",
      "uuid": "553a6be7-eecb-45dc-9cea-05126c525f1b"
    },
    {
      "core": true,
      "difficulty": 1,
      "slug": "rna-transcription",
      "topics": [
        "strings",
        "transforming"
      ],
      "uuid": "d7f57ab9-2edb-44cb-a04e-c575c0f4be4c"
    },
    {
      "core": true,
      "difficulty": 1,
      "slug": "simple-cipher",
      "topics": [
        "algorithms",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "mathematics",
        "randomness",
        "strings",
        "text-formatting",
        "transforming"
      ],
      "uuid": "fff57c49-cde9-4a0c-b70b-2903cef212af"
    },
    {
      "core": true,
      "difficulty": 2,
      "slug": "pangram",
      "topics": [
        "algorithms",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "lists",
        "maps",
        "searching",
        "strings"
      ],
      "uuid": "c57bf909-130f-46e6-97ca-aeed58df1a15"
    },
    {
      "core": true,
      "difficulty": 2,
      "slug": "bob",
      "topics": [
        "control-flow-(conditionals)",
        "pattern-recognition",
        "polymorfism",
        "regular-expressions",
        "strings",
        "unicode"
      ],
      "uuid": "246be5d9-b361-4893-9707-f218ede2bed6"
    },
    {
      "core": true,
      "difficulty": 2,
      "slug": "gigasecond",
      "topics": [
        "time"
      ],
      "uuid": "49e4874b-d7e2-4305-a9bc-627fab4ada44"
    },
    {
      "core": true,
      "difficulty": 3,
      "slug": "space-age",
      "topics": [
        "classes",
        "floating-point-numbers",
        "mathematics"
      ],
      "uuid": "b668e11a-a8ce-4e94-ba68-3a1f0fa3f6c8"
    },
    {
      "core": true,
      "difficulty": 4,
      "slug": "binary",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "exception-handling",
        "integers",
        "mathematics",
        "regular-expressions",
        "strings"
      ],
      "uuid": "c3035180-ff4c-4afe-8019-f8364158b74e"
    },
    {
      "core": true,
      "difficulty": 4,
      "slug": "prime-factors",
      "topics": [
        "algorithms",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "integers",
        "mathematics"
      ],
      "uuid": "73ecd6c2-e59b-4354-b305-64e28a60433f"
    },
    {
      "core": true,
      "difficulty": 4,
      "slug": "matrix",
      "topics": [
        "arrays",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "data-structures",
        "matrices",
        "text-formatting"
      ],
      "uuid": "fbfe6032-c209-40bd-b485-8b2881638166"
    },
    {
      "core": true,
      "difficulty": 5,
      "slug": "linked-list",
      "topics": [
        "algorithms",
        "arrays",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "data-structures",
        "lists",
        "optional-values"
      ],
      "uuid": "ecc41237-f629-458f-873e-2cc51ba1a385"
    },
    {
      "core": true,
      "difficulty": 5,
      "slug": "pascals-triangle",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "mathematics",
        "strings",
        "text-formatting"
      ],
      "uuid": "a96ab45d-10a0-42cf-a754-c2466037ceaf"
    },
    {
      "core": true,
      "difficulty": 6,
      "slug": "secret-handshake",
      "topics": [
        "algorithms",
        "arrays",
        "bitwise-operations",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "games"
      ],
      "uuid": "0a3a452c-f734-47eb-8e65-34c8ae710ef0"
    },
    {
      "core": false,
      "difficulty": 6,
      "slug": "rotational-cipher",
      "topics": [
        "cryptography",
        "integers",
        "strings"
      ],
      "unlocked_by": "secret-handshake",
      "uuid": "7078b1a4-ef73-4c02-809d-b2de62e9af11"
    },
    {
      "core": true,
      "difficulty": 6,
      "slug": "grade-school",
      "topics": [
        "arrays",
        "maps",
        "sorting"
      ],
      "uuid": "029bc3ed-772d-439b-bd0a-1ba1196a79ec"
    },
    {
      "core": true,
      "difficulty": 6,
      "slug": "robot-name",
      "topics": [
        "control-flow-(conditionals)",
        "exception-handling",
        "randomness",
        "regular-expressions",
        "sets"
      ],
      "uuid": "3005340b-a8d6-46ac-9075-125f9adccc2a"
    },
    {
      "core": true,
      "difficulty": 7,
      "slug": "wordy",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "exception-handling",
        "parsing",
        "pattern-recognition",
        "regular-expressions",
        "strings"
      ],
      "uuid": "bb54bf08-24ba-45e1-bdf7-08db161e5843"
    },
    {
      "core": true,
      "difficulty": 8,
      "slug": "list-ops",
      "topics": [
        "data-structures",
        "lists",
        "recursion"
      ],
      "uuid": "e70defe4-5944-4392-956c-63cb92e7fd9c"
    },
    {
      "core": false,
      "difficulty": 5,
      "slug": "rational-numbers",
      "topics": [
        "floating_point_numbers",
        "mathematics",
        "algorithms"
      ],
      "unlocked_by": "pascals-triangle",
      "uuid": "2de5677e-5759-4a21-93c7-39a3d88242e8"
    },
    {
      "core": false,
      "difficulty": 2,
      "slug": "hamming",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "equality",
        "strings"
      ],
      "unlocked_by": "rna-transcription",
      "uuid": "3e1358c8-2bea-41f9-bc9e-8277f354a4e0"
    },
    {
      "core": false,
      "difficulty": 2,
      "slug": "run-length-encoding",
      "topics": [
        "control-flow-(conditionals)",
        "exception-handling",
        "parsing",
        "pattern-recognition",
        "regular-expressions",
        "strings",
        "text-formatting"
      ],
      "unlocked_by": null,
      "uuid": "d66c2b56-b465-4922-af35-ae78944c0aac"
    },
    {
      "core": false,
      "difficulty": 2,
      "slug": "isogram",
      "topics": [
        "filtering",
        "strings"
      ],
      "unlocked_by": "pangram",
      "uuid": "35821375-5c94-4d4b-aa56-e3b079a45ca0"
    },
    {
      "core": false,
      "difficulty": 5,
      "slug": "beer-song",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "strings"
      ],
      "unlocked_by": "bob",
      "uuid": "6f315fc3-095a-4387-aefb-cc5fee97110a"
    },
    {
      "core": false,
      "difficulty": 3,
      "slug": "phone-number",
      "topics": [
        "parsing",
        "transforming"
      ],
      "unlocked_by": "pangram",
      "uuid": "347f9f54-a0d9-469d-babf-b3edb34d9d70"
    },
    {
      "core": false,
      "difficulty": 1,
      "slug": "anagram",
      "topics": [
        "filtering",
        "strings"
      ],
      "unlocked_by": "pangram",
      "uuid": "432ec2ce-c919-4142-aea2-389b67503252"
    },
    {
      "core": false,
      "difficulty": 4,
      "slug": "food-chain",
      "topics": [
        "algorithms",
        "text-formatting"
      ],
      "unlocked_by": "bob",
      "uuid": "a717745f-da00-4a5f-8bf3-6876e20cdf17"
    },
    {
      "core": false,
      "difficulty": 2,
      "slug": "etl",
      "topics": [
        "control-flow-(loops)",
        "integers",
        "maps",
        "transforming"
      ],
      "unlocked_by": "rna-transcription",
      "uuid": "a2a19f61-62ba-447a-8f57-537c8baa2e7a"
    },
    {
      "core": false,
      "difficulty": 4,
      "slug": "sublist",
      "topics": [
        "arrays",
        "lists"
      ],
      "unlocked_by": "linked-list",
      "uuid": "4a83a72c-db0a-45b6-b77c-1949cb24fbae"
    },
    {
      "core": false,
      "difficulty": 5,
      "slug": "grains",
      "topics": [
        "control-flow-(loops)",
        "integers",
        "mathematics"
      ],
      "unlocked_by": "space-age",
      "uuid": "c5be6908-f45c-4278-ba99-3701024f4eda"
    },
    {
      "core": false,
      "difficulty": 3,
      "slug": "triangle",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "exception-handling",
        "integers",
        "mathematics"
      ],
      "unlocked_by": "leap",
      "uuid": "fde792fa-84e9-4b86-8ecb-8466ad92a99d"
    },
    {
      "core": false,
      "difficulty": 5,
      "slug": "clock",
      "topics": [
        "dates",
        "globalization",
        "time"
      ],
      "unlocked_by": "gigasecond",
      "uuid": "1ff85150-6c51-4758-af02-4484cf35658e"
    },
    {
      "core": false,
      "difficulty": 3,
      "slug": "perfect-numbers",
      "topics": [
        "arrays",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "integers",
        "mathematics"
      ],
      "unlocked_by": "space-age",
      "uuid": "51aa5429-b2db-43ad-83cf-84e2ead22cb6"
    },
    {
      "core": false,
      "difficulty": 1,
      "slug": "word-count",
      "topics": [
        "control-flow-(loops)",
        "lists",
        "regular-expressions",
        "strings",
        "unicode"
      ],
      "unlocked_by": "pangram",
      "uuid": "9a4ea3da-ad43-4850-bdf3-2c578c5de838"
    },
    {
      "core": false,
      "difficulty": 2,
      "slug": "acronym",
      "topics": [
        "control-flow-(loops)",
        "regular-expressions",
        "strings",
        "transforming"
      ],
      "unlocked_by": "pangram",
      "uuid": "0c1c4788-0372-42e7-81c1-b090bb7ebc8b"
    },
    {
      "core": false,
      "difficulty": 5,
      "slug": "scrabble-score",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "maps",
        "strings"
      ],
      "unlocked_by": "rna-transcription",
      "uuid": "a6bd8126-3879-4593-8380-39ebfa87801b"
    },
    {
      "core": false,
      "difficulty": 3,
      "slug": "roman-numerals",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "mathematics",
        "pattern-recognition",
        "transforming"
      ],
      "unlocked_by": null,
      "uuid": "4226e3c6-99d4-406d-998a-bcf11845b211"
    },
    {
      "core": false,
      "difficulty": 8,
      "slug": "circular-buffer",
      "topics": [
        "arrays",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "data-structures",
        "exception-handling",
        "lists"
      ],
      "unlocked_by": "linked-list",
      "uuid": "f1943e87-182a-44f5-a885-3d68a0c0a0dc"
    },
    {
      "core": false,
      "difficulty": 2,
      "slug": "raindrops",
      "topics": [
        "control-flow-(conditionals)",
        "integers",
        "strings",
        "transforming"
      ],
      "unlocked_by": "rna-transcription",
      "uuid": "86b1acf1-9e2d-4b04-b8b0-e9ae6beb5f3d"
    },
    {
      "core": false,
      "difficulty": 6,
      "slug": "allergies",
      "topics": [
        "arrays",
        "bitwise-operations",
        "control-flow-(conditionals)",
        "control-flow-(loops)"
      ],
      "unlocked_by": "rna-transcription",
      "uuid": "23210e9e-81f6-4279-a776-00459c7ccd02"
    },
    {
      "core": false,
      "difficulty": 4,
      "slug": "strain",
      "topics": [
        "algorithms",
        "arrays",
        "callbacks",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "filtering",
        "lists"
      ],
      "unlocked_by": "list-ops",
      "uuid": "e61f3d54-55d2-4d32-9d2a-e7d6af3a3247"
    },
    {
      "core": false,
      "difficulty": 7,
      "slug": "atbash-cipher",
      "topics": [
        "algorithms",
        "arrays",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "regular-expressions",
        "text-formatting"
      ],
      "unlocked_by": "simple-cipher",
      "uuid": "99974454-0736-4cc0-b88f-ed5701397a97"
    },
    {
      "core": false,
      "difficulty": 5,
      "slug": "accumulate",
      "topics": [
        "algorithms",
        "callbacks",
        "control-flow-(loops)",
        "lists"
      ],
      "unlocked_by": "list-ops",
      "uuid": "dc9b2598-9757-4b20-82f9-8049ad081ac9"
    },
    {
      "core": false,
      "difficulty": 9,
      "slug": "crypto-square",
      "topics": [
        "algorithms",
        "arrays",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "regular-expressions",
        "sorting",
        "text-formatting",
        "transforming"
      ],
      "unlocked_by": "simple-cipher",
      "uuid": "a98e3593-d5b4-4c2b-8569-ae3ae7e07dad"
    },
    {
      "core": false,
      "difficulty": 4,
      "slug": "trinary",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "integers",
        "mathematics",
        "regular-expressions",
        "strings"
      ],
      "unlocked_by": "binary",
      "uuid": "f317721d-e1f5-4e68-9fdc-f9bc7b6b004d"
    },
    {
      "core": false,
      "difficulty": 5,
      "slug": "sieve",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "integers",
        "mathematics",
        "recursion"
      ],
      "unlocked_by": "prime-factors",
      "uuid": "4cad8ee8-40be-4d4d-8c14-45d8c6e29a32"
    },
    {
      "core": false,
      "difficulty": 4,
      "slug": "octal",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "integers",
        "mathematics",
        "regular-expressions",
        "strings"
      ],
      "unlocked_by": "binary",
      "uuid": "9892d47d-97a0-4a2f-8284-6f84c86559e8"
    },
    {
      "core": false,
      "difficulty": 4,
      "slug": "luhn",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "integers",
        "mathematics",
        "strings"
      ],
      "unlocked_by": "space-age",
      "uuid": "bb46e832-8c37-45ee-9ee7-5037015b965c"
    },
    {
      "core": false,
      "difficulty": 4,
      "slug": "pig-latin",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "games",
        "regular-expressions",
        "strings",
        "transforming"
      ],
      "unlocked_by": "bob",
      "uuid": "9a515ad0-34c7-4191-8784-5c4cd6385b38"
    },
    {
      "core": false,
      "difficulty": 5,
      "slug": "pythagorean-triplet",
      "topics": [
        "algorithms",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "integers",
        "mathematics"
      ],
      "unlocked_by": "space-age",
      "uuid": "26a973dd-d72e-40fb-abeb-0ba306356ed6"
    },
    {
      "core": false,
      "difficulty": 3,
      "slug": "series",
      "topics": [
        "control-flow-(loops)",
        "exception-handling",
        "strings",
        "text-formatting"
      ],
      "unlocked_by": "pangram",
      "uuid": "06afdb06-8d2a-4cb0-baf1-48ae997cf1f5"
    },
    {
      "core": false,
      "difficulty": 3,
      "slug": "difference-of-squares",
      "topics": [
        "algorithms",
        "control-flow-(loops)",
        "integers",
        "mathematics"
      ],
      "unlocked_by": "space-age",
      "uuid": "07110dd5-b879-40b9-9485-685cb0963d8f"
    },
    {
      "core": false,
      "difficulty": 4,
      "slug": "proverb",
      "topics": [
        "arrays",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "optional-values",
        "strings",
        "text-formatting"
      ],
      "unlocked_by": "bob",
      "uuid": "8786d591-077b-49bc-be8d-d014dc9dc308"
    },
    {
      "core": false,
      "difficulty": 1,
      "slug": "flatten-array",
      "topics": [
        "arrays",
        "recursion"
      ],
      "unlocked_by": "list-ops",
      "uuid": "32a0a5fa-c7de-470c-beff-118b448b3916"
    },
    {
      "core": false,
      "difficulty": 4,
      "slug": "hexadecimal",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "integers",
        "mathematics",
        "regular-expressions",
        "strings"
      ],
      "unlocked_by": "binary",
      "uuid": "33b8f4c0-3210-478a-9225-5c30ad6df870"
    },
    {
      "core": false,
      "difficulty": 7,
      "slug": "largest-series-product",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "exception-handling",
        "integers",
        "mathematics",
        "regular-expressions",
        "strings"
      ],
      "unlocked_by": "pangram",
      "uuid": "44bd02a7-0e3a-4441-ab76-524e36d4661c"
    },
    {
      "core": false,
      "difficulty": 7,
      "slug": "kindergarten-garden",
      "topics": [
        "arrays",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "strings",
        "text-formatting"
      ],
      "unlocked_by": "wordy",
      "uuid": "2702ac90-0be2-43a2-91b6-7256a25fec87"
    },
    {
      "core": false,
      "difficulty": 7,
      "slug": "binary-search",
      "topics": [
        "algorithms",
        "arrays",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "recursion"
      ],
      "unlocked_by": "linked-list",
      "uuid": "5991c379-f033-4b46-9702-6b7fd03640e8"
    },
    {
      "core": false,
      "difficulty": 6,
      "slug": "binary-search-tree",
      "topics": [
        "algorithms",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "recursion"
      ],
      "unlocked_by": "linked-list",
      "uuid": "865806e0-950f-49a5-a6e5-26472b90ab85"
    },
    {
      "core": false,
      "difficulty": 5,
      "slug": "robot-simulator",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "exception-handling",
        "games",
        "parsing",
        "strings"
      ],
      "unlocked_by": "wordy",
      "uuid": "00002977-ea1e-45e2-b66e-09d793b5c1ad"
    },
    {
      "core": false,
      "difficulty": 5,
      "slug": "nth-prime",
      "topics": [
        "algorithms",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "exception-handling",
        "integers",
        "mathematics"
      ],
      "unlocked_by": "prime-factors",
      "uuid": "8fa51380-ec2c-4806-8833-cf543579de17"
    },
    {
      "core": false,
      "difficulty": 7,
      "slug": "palindrome-products",
      "topics": [
        "algorithms",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "exception-handling",
        "integers",
        "mathematics"
      ],
      "unlocked_by": "prime-factors",
      "uuid": "fde83f66-d927-48f8-a599-efb98927f0b1"
    },
    {
      "core": false,
      "difficulty": 6,
      "slug": "say",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "exception-handling",
        "integers",
        "mathematics",
        "strings",
        "text-formatting"
      ],
      "unlocked_by": "bob",
      "uuid": "01d286f6-5f29-4d4b-a4de-e217a4833bfa"
    },
    {
      "core": false,
      "difficulty": 6,
      "slug": "custom-set",
      "topics": [
        "arrays",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "data-structures",
        "equality",
        "lists",
        "recursion",
        "sets"
      ],
      "unlocked_by": "linked-list",
      "uuid": "d4ec15c4-2742-493b-97fe-9d5121f0b659"
    },
    {
      "core": false,
      "difficulty": 5,
      "slug": "sum-of-multiples",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "integers",
        "lists"
      ],
      "unlocked_by": "prime-factors",
      "uuid": "f30463c4-9d8c-4238-a691-e594291b4425"
    },
    {
      "core": false,
      "difficulty": 8,
      "slug": "queen-attack",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "equality",
        "exception-handling",
        "optional-values",
        "parsing",
        "text-formatting"
      ],
      "unlocked_by": null,
      "uuid": "fefcfeba-59ec-4c63-a562-374201ee39a7"
    },
    {
      "core": false,
      "difficulty": 6,
      "slug": "saddle-points",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "equality",
        "exception-handling",
        "integers",
        "mathematics",
        "matrices",
        "optional-values",
        "parsing"
      ],
      "unlocked_by": "matrix",
      "uuid": "98cbae4f-78b6-4745-b922-39e8db9a12bb"
    },
    {
      "core": false,
      "difficulty": 5,
      "slug": "ocr-numbers",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "equality",
        "exception-handling",
        "integers",
        "parsing",
        "text-formatting"
      ],
      "unlocked_by": "matrix",
      "uuid": "759618b1-7ccc-46cd-889d-aea58ec88756"
    },
    {
      "core": false,
      "difficulty": 7,
      "slug": "meetup",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "dates",
        "equality",
        "exception-handling",
        "time"
      ],
      "unlocked_by": "gigasecond",
      "uuid": "86b1b6ba-c1fe-492d-a7ec-c22c525b4da8"
    },
    {
      "core": false,
      "difficulty": 3,
      "slug": "bracket-push",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "exception-handling",
        "parsing",
        "strings"
      ],
      "unlocked_by": "pangram",
      "uuid": "25099f87-5c3b-4a8a-b648-4639d1e9fa84"
    },
    {
      "core": false,
      "difficulty": 6,
      "slug": "two-bucket",
      "topics": [
        "algorithms",
        "arrays",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "exception-handling",
        "games",
        "parsing"
      ],
      "unlocked_by": "grade-school",
      "uuid": "4c857b17-33b0-47fa-b981-6b2fe4e394a1"
    },
    {
      "core": false,
      "difficulty": 8,
      "slug": "bowling",
      "topics": [
        "arrays",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "exception-handling",
        "games",
        "parsing",
        "text-formatting"
      ],
      "unlocked_by": "grade-school",
      "uuid": "c168fe1f-f84e-46e6-91fc-7553d048a4e9"
    },
    {
      "core": false,
      "difficulty": 5,
      "slug": "diamond",
      "topics": [
        "arrays",
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "exception-handling",
        "games",
        "parsing",
        "text-formatting"
      ],
      "unlocked_by": "pascals-triangle",
      "uuid": "04a4ef78-5b61-454f-8c37-798875fb4956"
    },
    {
      "core": false,
      "difficulty": 5,
      "slug": "all-your-base",
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "exception-handling",
        "integers",
        "mathematics",
        "parsing"
      ],
      "unlocked_by": "binary",
      "uuid": "cdfcec62-f2f3-4408-ad2c-8b5e1e56e791"
    },
    {
      "core": false,
      "difficulty": 7,
      "slug": "minesweeper",
      "topics": [
        "algorithms",
        "arrays",
        "games"
      ],
      "unlocked_by": null,
      "uuid": "22fa5ab4-935b-44cc-b055-9803214ae5f3"
    },
    {
      "core": false,
      "difficulty": 7,
      "slug": "alphametics",
      "topics": [
        "algorithms",
        "games"
      ],
      "unlocked_by": "grade-school",
      "uuid": "42a7fd83-4508-403c-8b5e-f0a3126fac8a"
    },
    {
      "core": false,
      "difficulty": 8,
      "slug": "simple-linked-list",
      "topics": [
        "arrays",
        "data-structures",
        "lists"
      ],
      "unlocked_by": "linked-list",
      "uuid": "c21ab6e8-b845-49d0-a2f6-1c89c7a07626"
    },
    {
      "uuid": "833bd7c7-d3d8-45fd-a218-12dea646065d",
      "slug": "diffie-hellman",
      "core": false,
      "unlocked_by": "simple-cipher",
      "difficulty": 3,
      "topics": [
        "Control-flow (conditionals)",
        "Control-flow (loops)",
        "Algorithms",
        "Arrays",
        "Exception handling"
      ]
    },
    {
      "core" :  false,
      "difficulty" : 8,
      "slug" : "change",
       "topics": [
          "Algorithms",
          "Mathematics",
          "Performance",
          "Searching"
      ],
      "unlocked_by": "prime-factors",
      "uuid" : "910fe904-7e3c-11e7-bb31-be2e44b06b34"
    },
    {
      "uuid": "3b779cb8-9544-4e0d-a306-e5478d741be7",
      "slug": "connect",
      "core": false,
      "unlocked_by": "grade-school",
      "difficulty": 7,
      "topics": [
        "Control-flow (loops)",
        "Control-flow (conditionals)",
        "Games",
        "Parsing",
        "Arrays",
        "Maps"
      ]
    },
    {
      "core" :  false,
      "difficulty" : 1,
      "slug" : "collatz-conjecture",
       "topics": [
         "Control-flow (loops)",
         "Control-flow (conditionals)",
         "Recursion",
         "Integers",
         "Algorithms",
         "Mathematics"
      ],
      "unlocked_by": null,
      "uuid" : "fd435dad-311a-4c40-9868-70863455831e"
    },
    {
      "deprecated": true,
      "slug": "nucleotide-count",
      "uuid": "1b53340d-ea40-44ee-bf2e-42e516704e7c"
    },
    {
      "deprecated": true,
      "slug": "point-mutations",
      "uuid": "e9a6b2ea-a67d-4b75-800d-7b46240094ec"
    },
    {
      "uuid": "09e10522-9853-11e7-abc4-cec278b6b50a",
      "slug": "twelve-days",
      "core": false,
      "unlocked_by": "bob",
      "difficulty": 4,
      "topics": [
        "Control-flow (conditionals)",
        "Control-flow (loops)",
        "Strings",
        "Pattern recognition"
      ]
    },
    {
      "core": false,
      "difficulty": 1,
      "slug": "transpose",
      "topics": [
        "loops",
        "arrays",
        "lists",
        "matrices",
        "strings",
        "text_formatting"
      ],
      "unlocked_by": "matrix",
      "uuid": "7c024853-0540-473d-b2d9-cad84953c00f"
    },
    {
      "uuid": "52c775a4-7ddb-4cba-8a78-8544220bd1b6",
      "slug": "protein-translation",
      "core": false,
      "unlocked_by": null,
      "difficulty": 1,
      "topics": [
        "control-flow-(conditionals)",
        "control-flow-(loops)",
        "strings",
        "algorithms"
      ]
    },
    {
      "uuid": "f4a3d66a-04a8-3e80-6c9a-8a573ccb26fd9ed1d5c",
      "slug": "zipper",
      "core": false,
      "unlocked_by": null,
      "difficulty": 8,
      "topics": [
        "recursion",
        "searching",
        "trees"
      ]
    },
    {
      "uuid": "8740af44-002c-4716-a759-a68ae4c68737",
      "slug": "isbn-verifier",
      "core": false,
      "unlocked_by": "bob",
      "difficulty": 4,
      "topics": [
        "conditionals",
        "loops",
        "pattern_matching",
        "strings"
      ]
    },
    {
      "uuid": "b3dbc935-536e-4910-994d-4a519b511b6a",
      "slug": "forth",
      "core": false,
      "unlocked_by": "matrix",
      "difficulty": 8,
      "topics": [
        "stacks",
        "parsing",
        "domain_specific_languages"
      ]
    },
    {
      "uuid": "f82e470d-0bcc-4eba-b9b0-8a0c50a6fd19",
      "slug": "variable-length-quantity",
      "core": false,
      "unlocked_by": "grade-school",
      "difficulty": 5,
      "topics": [
        "bitwise_operations",
        "transforming"
      ]
    },
    {
      "uuid": "cb09212c-f2ae-4acf-9177-6c7f42594c1d",
      "slug": "rectangles",
      "core": false,
      "unlocked_by": "grade-school",
      "difficulty": 6,
      "topics": [
        "parsing",
        "searching",
        "pattern_recognition"
      ]
    },
    {
      "uuid": "0e4b628c-870d-446b-a400-3cc72457f2bc",
      "slug": "armstrong-numbers",
      "core": false,
      "unlocked_by": null,
      "difficulty": 2,
      "topics": [
        "mathematics",
        "algorithms"
      ]
    }
  ],
  "foregone": [],
  "language": "JavaScript",
  "test_pattern": ".*[.]spec[.]js$"
}