{
  "language": "F#",
  "active": true,
  "blurb":  "F# is a strongly-typed, functional language that is part of Microsoft's .NET language stack. Although F# is great for data science problems, it can elegantly handle almost every problem you throw at it.",
  "exercises": [
    {
      "uuid": "302312cc-bd15-4ba0-8f2f-cbf411c40186",
      "slug": "hello-world",
      "core": true,
      "unlocked_by": null,
      "difficulty": 1,
      "topics": [
        "Strings"
      ]
    },
    {
      "uuid": "66d974b5-18fc-4993-b5f2-7beda4f4afa3",
      "slug": "leap",
      "core": true,
      "unlocked_by": null,
      "difficulty": 1,
      "topics": [
        "Integers",
        "Control-flow (if-else statements)"
      ]
    },
    {
      "uuid": "b3c4d578-10c8-47bc-b0ae-149ed8da530a",
      "slug": "bob",
      "core": true,
      "unlocked_by": null,
      "difficulty": 1,
      "topics": [
        "Strings",
        "Control-flow (if-else statements)"
      ]
    },
    {
      "uuid": "e702b75e-4c9e-40ef-bcb1-674a87222c23",
      "slug": "sum-of-multiples",
      "core": true,
      "unlocked_by": null,
      "difficulty": 1,
      "topics": [
        "Lists",
        "Transforming"
      ]
    },
    {
      "uuid": "277d05db-0ba0-4de6-b5f8-090c251afffc",
      "slug": "space-age",
      "core": true,
      "unlocked_by": null,
      "difficulty": 1,
      "topics": [
        "Discriminated unions",
        "Floating-point numbers"
      ]
    },
    {
      "uuid": "0c953a84-e726-4b9f-a964-1950ac2f95f2",
      "slug": "raindrops",
      "core": true,
      "unlocked_by": null,
      "difficulty": 2,
      "topics": [
        "Text formatting",
        "Filtering"
      ]
    },
    {
      "uuid": "e7085050-1611-4773-9032-0e0ffb56c20e",
      "slug": "accumulate",
      "core": true,
      "unlocked_by": null,
      "difficulty": 2,
      "topics": [
        "Recursion",
        "Transforming"
      ]
    },
    {
      "uuid": "cf058dc8-db6f-4034-ac5b-22f1d8d0decc",
      "slug": "grade-school",
      "core": true,
      "unlocked_by": null,
      "difficulty": 2,
      "topics": [
        "Maps",
        "Sorting"
      ]
    },
    {
      "uuid": "30c3a38e-1e44-4711-887e-fca301c26c1b",
      "slug": "clock",
      "core": true,
      "unlocked_by": null,
      "difficulty": 3,
      "topics": [
        "Time",
        "Structural equality"
      ]
    },
    {
      "uuid": "0ea0d92f-5510-4ba9-b419-3f5ad029b74f",
      "slug": "beer-song",
      "core": true,
      "unlocked_by": "raindrops",
      "difficulty": 3,
      "topics": [
        "Text formatting",
        "Algorithms"
      ]
    },
    {
      "uuid": "cf64cddf-63e2-4c71-ac15-0af617f82856",
      "slug": "kindergarten-garden",
      "core": true,
      "unlocked_by": null,
      "difficulty": 3,
      "topics": [
        "Parsing",
        "Enumerations"
      ]
    },
    {
      "uuid": "528a0023-8687-4524-8318-516d1e432d0d",
      "slug": "queen-attack",
      "core": true,
      "unlocked_by": null,
      "difficulty": 3,
      "topics": [
        "Tuples"
      ]
    },
    {
      "uuid": "ecae4faa-c516-4a71-8d55-9c53403d8826",
      "slug": "robot-simulator",
      "core": true,
      "unlocked_by": null,
      "difficulty": 3,
      "topics": [
        "Records",
        "Tuples"
      ]
    },
    {
      "uuid": "221dff26-0495-4d4b-9363-14a5d7263271",
      "slug": "allergies",
      "core": true,
      "unlocked_by": "kindergarten-garden",
      "difficulty": 4,
      "topics": [
        "Enumerations",
        "Bitwise operations",
        "Filtering"
      ]
    },
    {
      "uuid": "eca7e334-f549-4601-a515-9d1467d3d0ea",
      "slug": "ocr-numbers",
      "core": true,
      "unlocked_by": null,
      "difficulty": 5,
      "topics": [
        "Parsing",
        "Pattern recognition"
      ]
    },
    {
      "uuid": "a53fa908-f983-4da5-b1c1-3989bd2ea2f9",
      "slug": "tree-building",
      "core": true,
      "unlocked_by": null,
      "difficulty": 5,
      "topics": [
        "Trees",
        "Refactoring"
      ]
    },
    {
      "uuid": "4e786e56-2658-445f-ac91-64dd9c38dbb3",
      "slug": "binary-search-tree",
      "core": true,
      "unlocked_by": null,
      "difficulty": 5,
      "topics": [
        "Searching",
        "Trees",
        "Optional values"
      ]
    },
    {
      "uuid": "a002e3db-8e9c-4cbf-b00f-f2090bae5d5a",
      "slug": "pig-latin",
      "core": true,
      "unlocked_by": null,
      "difficulty": 6,
      "topics": [
        "Strings",
        "Transforming"
      ]
    },
    {
      "uuid": "3969fb29-5997-4050-adb0-8c6e95f48013",
      "slug": "difference-of-squares",
      "core": false,
      "unlocked_by": null,
      "difficulty": 1,
      "topics": [
        "Integers"
      ]
    },
    {
      "uuid": "1d377268-8892-460b-a84b-011fde1ff06b",
      "slug": "gigasecond",
      "core": false,
      "unlocked_by": null,
      "difficulty": 1,
      "topics": [
        "Dates"
      ]
    },
    {
      "uuid": "3a015501-58bf-427c-8c4c-2197321f4a34",
      "slug": "rna-transcription",
      "core": false,
      "unlocked_by": null,
      "difficulty": 1,
      "topics": [
        "Strings",
        "Transforming"
      ]
    },
    {
      "uuid": "e3751098-5a15-4350-bf5d-507583de3386",
      "slug": "grains",
      "core": false,
      "unlocked_by": "leap",
      "difficulty": 2,
      "topics": [
        "Integers"
      ]
    },
    {
      "uuid": "1dadf8c0-b15c-413f-987e-187d043910f0",
      "slug": "hamming",
      "core": false,
      "unlocked_by": "hello-world",
      "difficulty": 2,
      "topics": [
        "Strings",
        "Filtering"
      ]
    },
    {
      "uuid": "e6f92e96-b26a-4eba-8759-e8976a8a9097",
      "slug": "nucleotide-count",
      "core": false,
      "unlocked_by": "grade-school",
      "difficulty": 2,
      "topics": [
        "Maps",
        "Strings"
      ]
    },
    {
      "uuid": "dc133087-0548-49b4-8f17-0c26cf53bcdf",
      "slug": "pangram",
      "core": false,
      "unlocked_by": "hello-world",
      "difficulty": 2,
      "topics": [
        "Strings"
      ]
    },
    {
      "uuid": "95e592a8-6663-4b07-894a-86a5cc310c67",
      "slug": "etl",
      "core": false,
      "unlocked_by": "grade-school",
      "difficulty": 2,
      "topics": [
        "Maps",
        "Transforming"
      ]
    },
    {
      "uuid": "47fd8f98-20d3-43fe-825f-27745e13908d",
      "slug": "triangle",
      "core": false,
      "unlocked_by": "space-age",
      "difficulty": 3,
      "topics": [
        "Integers",
        "Discriminated unions"
      ]
    },
    {
      "uuid": "3fbd466a-caf4-48ac-9a1e-796bc406ff1e",
      "slug": "robot-name",
      "core": false,
      "unlocked_by": "hello-world",
      "difficulty": 3,
      "topics": [
        "Randomness",
        "Strings"
      ]
    },
    {
      "uuid": "fc7935f9-bffa-4eb1-b447-49379b45aac7",
      "slug": "error-handling",
      "core": false,
      "unlocked_by": "space-age",
      "difficulty": 3,
      "topics": [
        "Exception handling",
        "Discriminated unions",
        "Optional values"
      ]
    },
    {
      "uuid": "e22fcca5-b23c-4feb-972f-9795dd1bd946",
      "slug": "scrabble-score",
      "core": false,
      "unlocked_by": "clock",
      "difficulty": 3,
      "topics": [
        "Transforming"
      ]
    },
    {
      "uuid": "5ca0e0ba-20ac-4d48-b2dc-0cdde06a8f3e",
      "slug": "proverb",
      "core": false,
      "unlocked_by": "bob",
      "difficulty": 3,
      "topics": [
        "Text formatting",
        "Algorithms"
      ]
    },
    {
      "uuid": "612395a5-238e-4be0-8ce0-4ac66f57056e",
      "slug": "protein-translation",
      "core": false,
      "unlocked_by": "sum-of-multiples",
      "difficulty": 3,
      "topics": [
        "Strings",
        "Lists",
        "Transforming"
      ]
    },
    {
      "uuid": "48ac8887-28db-4566-a415-c2d338dea104",
      "slug": "strain",
      "core": false,
      "unlocked_by": "raindrops",
      "difficulty": 3,
      "topics": [
        "Sequences",
        "Filtering"
      ]
    },
    {
      "uuid": "61404a27-62c3-43dc-93b7-7e4547e0a0d9",
      "slug": "isogram",
      "core": false,
      "unlocked_by": "hello-world",
      "difficulty": 3,
      "topics": [
        "Strings",
        "Filtering"
      ]
    },
    {
      "uuid": "a6511471-bc2c-4734-92fe-c6c5cf447efd",
      "slug": "sieve",
      "core": false,
      "unlocked_by": "raindrops",
      "difficulty": 3,
      "topics": [
        "Filtering",
        "Mathematics"
      ]
    },
    {
      "uuid": "929f98e4-a16c-464b-ac6c-59ca86dbd2b6",
      "slug": "phone-number",
      "core": false,
      "unlocked_by": "hello-world",
      "difficulty": 3,
      "topics": [
        "Parsing",
        "Transforming"
      ]
    },
    {
      "uuid": "45fcf742-1b3a-422a-b476-5ee81d80057a",
      "slug": "perfect-numbers",
      "core": false,
      "unlocked_by": "space-age",
      "difficulty": 3,
      "topics": [
        "Integers",
        "Discriminated unions"
      ]
    },
    {
      "uuid": "c5b38251-14ba-4d98-a420-7a930f06167f",
      "slug": "binary-search",
      "core": false,
      "unlocked_by": "sum-of-multiples",
      "difficulty": 3,
      "topics": [
        "Searching",
        "Lists"
      ]
    },
    {
      "uuid": "ae78a960-2c55-44cb-9fd0-49b4bd5729c5",
      "slug": "secret-handshake",
      "core": false,
      "unlocked_by": "allergies",
      "difficulty": 3,
      "topics": [
        "Bitwise operations",
        "Lists"
      ]
    },
    {
      "uuid": "0c7a2f06-1e53-4043-9e1a-386e90e945b4",
      "slug": "word-count",
      "core": false,
      "unlocked_by": "grade-school",
      "difficulty": 4,
      "topics": [
        "Strings",
        "Maps",
        "Transforming"
      ]
    },
    {
      "uuid": "89cd6eb1-9671-42bd-a619-59013fb721b0",
      "slug": "twelve-days",
      "core": false,
      "unlocked_by": "hello-world",
      "difficulty": 4,
      "topics": [
        "Text formatting",
        "Algorithms"
      ]
    },
    {
      "uuid": "3ce04665-95d1-4608-9763-5ee1b5f2584c",
      "slug": "meetup",
      "core": false,
      "unlocked_by": "clock",
      "difficulty": 4,
      "topics": [
        "Dates"
      ]
    },
    {
      "uuid": "cffcb076-295f-497f-8ef1-059a8fa65536",
      "slug": "anagram",
      "core": false,
      "unlocked_by": "bob",
      "difficulty": 4,
      "topics": [
        "Strings",
        "Filtering"
      ]
    },
    {
      "uuid": "4b07842c-dcef-4be0-a842-0b3b7a30c499",
      "slug": "series",
      "core": false,
      "unlocked_by": "bob",
      "difficulty": 4,
      "topics": [
        "Strings",
        "Lists",
        "Transforming"
      ]
    },
    {
      "uuid": "e86e88a0-802c-41f4-b2a1-c7a81b8e87de",
      "slug": "simple-linked-list",
      "core": false,
      "unlocked_by": "sum-of-multiples",
      "difficulty": 4,
      "topics": [
        "Lists"
      ]
    },
    {
      "uuid": "926f9309-e0bb-457a-8f1d-8fa947ed5ce7",
      "slug": "acronym",
      "core": false,
      "unlocked_by": "bob",
      "difficulty": 4,
      "topics": [
        "Strings",
        "Transforming"
      ]
    },
    {
      "uuid": "632417fa-7bf7-4228-9b71-dbdd6738b223",
      "slug": "matrix",
      "core": false,
      "unlocked_by": "kindergarten-garden",
      "difficulty": 4,
      "topics": [
        "Matrices",
        "Parsing"
      ]
    },
    {
      "uuid": "01e394ee-23d5-44e6-a37e-149ffaf5375e",
      "slug": "all-your-base",
      "core": false,
      "unlocked_by": "leap",
      "difficulty": 4,
      "topics": [
        "Integers",
        "Transforming"
      ]
    },
    {
      "uuid": "b3643992-583b-4e7a-a970-94bc7ae6739a",
      "slug": "largest-series-product",
      "core": false,
      "unlocked_by": "leap",
      "difficulty": 4,
      "topics": [
        "Strings",
        "Integers",
        "Transforming"
      ]
    },
    {
      "uuid": "7d339c98-74ea-49d5-a97c-c0417e28468a",
      "slug": "house",
      "core": false,
      "unlocked_by": "bob",
      "difficulty": 4,
      "topics": [
        "Text formatting",
        "Algorithms"
      ]
    },
    {
      "uuid": "6bcde851-71ad-4985-b335-8ca67f99c22f",
      "slug": "pythagorean-triplet",
      "core": false,
      "unlocked_by": "robot-simulator",
      "difficulty": 4,
      "topics": [
        "Records",
        "Integers",
        "Mathematics"
      ]
    },
    {
      "uuid": "526fc5b4-e96b-419a-8987-9b78e9bddc19",
      "slug": "saddle-points",
      "core": false,
      "unlocked_by": "sum-of-multiples",
      "difficulty": 4,
      "topics": [
        "Matrices",
        "Lists"
      ]
    },
    {
      "uuid": "fef76c19-db3c-442d-b2f5-b0dfae19ee43",
      "slug": "pascals-triangle",
      "core": false,
      "unlocked_by": "accumulate",
      "difficulty": 4,
      "topics": [
        "Recursion",
        "Lists",
        "Mathematics"
      ]
    },
    {
      "uuid": "47602465-a92d-43a5-9e9a-8ef09ce2104d",
      "slug": "list-ops",
      "core": false,
      "unlocked_by": "accumulate",
      "difficulty": 4,
      "topics": [
        "Lists",
        "Recursion"
      ]
    },
    {
      "uuid": "18652e46-6dd2-4030-84af-be0965c92991",
      "slug": "prime-factors",
      "core": false,
      "unlocked_by": "robot-simulator",
      "difficulty": 4,
      "topics": [
        "Integers",
        "Mathematics"
      ]
    },
    {
      "uuid": "2e88193d-9f80-4d83-901b-bb5ac4b0804c",
      "slug": "roman-numerals",
      "core": false,
      "unlocked_by": "accumulate",
      "difficulty": 5,
      "topics": [
        "Recursion",
        "Transforming"
      ]
    },
    {
      "uuid": "dc50364b-b5b6-4e0b-ba58-32fb7d60a93b",
      "slug": "dot-dsl",
      "core": false,
      "unlocked_by": "clock",
      "difficulty": 5,
      "topics": [
        "Domain-specific languages"
      ]
    },
    {
      "uuid": "c0d0ae0f-83fb-433a-8778-d38e8a6645aa",
      "slug": "parallel-letter-frequency",
      "core": false,
      "unlocked_by": "clock",
      "difficulty": 5,
      "topics": [
        "Parallellism",
        "Transforming"
      ]
    },
    {
      "uuid": "253f040d-35c2-4e1c-8651-d7a7410d7d0d",
      "slug": "linked-list",
      "core": false,
      "unlocked_by": "sum-of-multiples",
      "difficulty": 5,
      "topics": [
        "Lists"
      ]
    },
    {
      "uuid": "df6f311b-9deb-4d07-9a29-3d881556513e",
      "slug": "simple-cipher",
      "core": false,
      "unlocked_by": "beer-song",
      "difficulty": 5,
      "topics": [
        "Strings",
        "Algorithms",
        "Transforming"
      ]
    },
    {
      "uuid": "02a8e767-7449-48a9-8d6b-f2cac708de50",
      "slug": "scale-generator",
      "core": false,
      "unlocked_by": "kindergarten-garden",
      "difficulty": 5,
      "topics": [
        "Parsing",
        "Algorithms"
      ]
    },
    {
      "uuid": "3fb37bef-a754-4a64-8493-ba4254518017",
      "slug": "atbash-cipher",
      "core": false,
      "unlocked_by": "beer-song",
      "difficulty": 5,
      "topics": [
        "Strings",
        "Algorithms",
        "Transforming"
      ]
    },
    {
      "uuid": "f4dee9ea-fcdf-4623-8ae1-13bdf995f2cb",
      "slug": "food-chain",
      "core": false,
      "unlocked_by": "raindrops",
      "difficulty": 5,
      "topics": [
        "Text formatting",
        "Algorithms"
      ]
    },
    {
      "uuid": "da48b422-1c23-4272-87a4-415620d4e857",
      "slug": "grep",
      "core": false,
      "unlocked_by": "raindrops",
      "difficulty": 5,
      "topics": [
        "Text formatting",
        "Files",
        "Searching"
      ]
    },
    {
      "uuid": "ecee74aa-41f5-42aa-b99e-31e9589378e3",
      "slug": "custom-set",
      "core": false,
      "unlocked_by": "queen-attack",
      "difficulty": 5,
      "topics": [
        "Sets"
      ]
    },
    {
      "uuid": "8d381a54-04a1-45d3-84d3-933b0d94f440",
      "slug": "crypto-square",
      "core": false,
      "unlocked_by": "beer-song",
      "difficulty": 5,
      "topics": [
        "Strings",
        "Algorithms",
        "Transforming"
      ]
    },
    {
      "uuid": "e860ad86-cd1f-474b-9e8e-d8a72ff4315c",
      "slug": "ledger",
      "core": false,
      "unlocked_by": "raindrops",
      "difficulty": 5,
      "topics": [
        "Globalization",
        "Text formatting",
        "Refactoring"
      ]
    },
    {
      "uuid": "b62f8574-9bac-4b95-a76c-f13789ae2663",
      "slug": "circular-buffer",
      "core": false,
      "unlocked_by": "robot-simulator",
      "difficulty": 5,
      "topics": [
        "Queues",
        "Records"
      ]
    },
    {
      "uuid": "85ab318f-7842-486d-88de-f0ff7fbef069",
      "slug": "luhn",
      "core": false,
      "unlocked_by": "beer-song",
      "difficulty": 5,
      "topics": [
        "Strings",
        "Algorithms",
        "Transforming"
      ]
    },
    {
      "uuid": "cb629d30-0351-4023-bd51-423267164c24",
      "slug": "bank-account",
      "core": false,
      "unlocked_by": "binary-search-tree",
      "difficulty": 5,
      "topics": [
        "Optional values",
        "Concurrency"
      ]
    },
    {
      "uuid": "0688eb10-9581-45c0-a69a-13f20d534cb0",
      "slug": "markdown",
      "core": false,
      "unlocked_by": "kindergarten-garden",
      "difficulty": 5,
      "topics": [
        "Parsing",
        "Transforming",
        "Refactoring"
      ]
    },
    {
      "uuid": "0a10cd0b-ea37-4c78-a6a4-223203ac1c37",
      "slug": "run-length-encoding",
      "core": false,
      "unlocked_by": "queen-attack",
      "difficulty": 5,
      "topics": [
        "Algorithms",
        "Transforming"
      ]
    },
    {
      "uuid": "3741977a-adff-47bb-a9c5-c2e444805bac",
      "slug": "book-store",
      "core": false,
      "unlocked_by": "accumulate",
      "difficulty": 5,
      "topics": [
        "Recursion"
      ]
    },
    {
      "uuid": "b5672a0c-aac5-4274-a458-39d018b74750",
      "slug": "tournament",
      "core": false,
      "unlocked_by": "beer-song",
      "difficulty": 6,
      "topics": [
        "Text formatting",
        "Parsing"
      ]
    },
    {
      "uuid": "8f8a79d1-78ed-4cdd-adcc-5cd6c6781dcd",
      "slug": "word-search",
      "core": false,
      "unlocked_by": "queen-attack",
      "difficulty": 6,
      "topics": [
        "Searching",
        "Tuples",
        "Optional values"
      ]
    },
    {
      "uuid": "1c8ad2ca-4aec-47af-94b1-ef7e2830b463",
      "slug": "bowling",
      "core": false,
      "unlocked_by": "clock",
      "difficulty": 6,
      "topics": [
        "Algorithms"
      ]
    },
    {
      "uuid": "3dfedd37-8159-446d-a332-e9d356f484ca",
      "slug": "transpose",
      "core": false,
      "unlocked_by": "pig-latin",
      "difficulty": 6,
      "topics": [
        "Strings",
        "Transforming"
      ]
    },
    {
      "uuid": "220cbe7e-e781-4ab9-84ec-2b89a3c97670",
      "slug": "nth-prime",
      "core": false,
      "unlocked_by": "leap",
      "difficulty": 6,
      "topics": [
        "Mathematics"
      ]
    },
    {
      "uuid": "471c89f9-8b27-4898-8e98-58e4b2921616",
      "slug": "palindrome-products",
      "core": false,
      "unlocked_by": "queen-attack",
      "difficulty": 6,
      "topics": [
        "Strings",
        "Tuples",
        "Algorithms"
      ]
    },
    {
      "uuid": "c418bba8-2185-4b45-92f1-0cfafbbe8ce5",
      "slug": "rail-fence-cipher",
      "core": false,
      "unlocked_by": "pig-latin",
      "difficulty": 6,
      "topics": [
        "Strings",
        "Algorithms",
        "Transforming"
      ]
    },
    {
      "uuid": "677ca063-70fe-4cfc-8112-c5d78bd1ea44",
      "slug": "bracket-push",
      "core": false,
      "unlocked_by": "kindergarten-garden",
      "difficulty": 7,
      "topics": [
        "Parsing",
        "Strings"
      ]
    },
    {
      "uuid": "d17b0c35-49a7-4ea6-b68c-7b2b56dc5968",
      "slug": "sublist",
      "core": false,
      "unlocked_by": "tree-building",
      "difficulty": 7,
      "topics": [
        "Lists",
        "Recursion"
      ]
    },
    {
      "uuid": "03a1c773-5c48-4f70-a2de-b742197fa9d2",
      "slug": "change",
      "core": false,
      "unlocked_by": "accumulate",
      "difficulty": 7,
      "topics": [
        "Integers",
        "Recursion"
      ]
    },
    {
      "uuid": "9e3fc78d-ac3b-4195-ad4c-9f99b0ee2678",
      "slug": "minesweeper",
      "core": false,
      "unlocked_by": "kindergarten-garden",
      "difficulty": 7,
      "topics": [
        "Parsing",
        "Transforming"
      ]
    },
    {
      "uuid": "2a7e3e78-ab94-40f3-8f16-1d5aa84c2f85",
      "slug": "diffie-hellman",
      "core": false,
      "unlocked_by": "leap",
      "difficulty": 7,
      "topics": [
        "Integers",
        "Algorithms",
        "Transforming"
      ]
    },
    {
      "uuid": "f09d34d3-f12c-4c9a-9083-68172478278e",
      "slug": "dominoes",
      "core": false,
      "unlocked_by": "queen-attack",
      "difficulty": 7,
      "topics": [
        "Lists",
        "Tuples"
      ]
    },
    {
      "uuid": "d3f364e0-9866-4ec4-8197-dc248b96042b",
      "slug": "rectangles",
      "core": false,
      "unlocked_by": "kindergarten-garden",
      "difficulty": 7,
      "topics": [
        "Parsing",
        "Transforming"
      ]
    },
    {
      "uuid": "c721b3f2-4afc-4a30-bad5-77bd002c2819",
      "slug": "wordy",
      "core": false,
      "unlocked_by": "kindergarten-garden",
      "difficulty": 7,
      "topics": [
        "Parsing",
        "Strings",
        "Transforming"
      ]
    },
    {
      "uuid": "ab0f1b66-011f-4aa3-89c5-c89427121279",
      "slug": "hangman",
      "core": false,
      "unlocked_by": "tree-building",
      "difficulty": 8,
      "topics": [
        "Reactive programming"
      ]
    },
    {
      "uuid": "ee021156-5520-4386-8b5d-9c648f30287c",
      "slug": "zebra-puzzle",
      "core": false,
      "unlocked_by": "robot-simulator",
      "difficulty": 8,
      "topics": [
        "Logic"
      ]
    },
    {
      "uuid": "411b93d0-214d-4d46-9081-16b9dd376174",
      "slug": "poker",
      "core": false,
      "unlocked_by": "space-age",
      "difficulty": 8,
      "topics": [
        "Discriminated unions",
        "Parsing",
        "Sorting",
        "Games"
      ]
    },
    {
      "uuid": "736a470f-412c-41fc-b92d-9bd59ef3bcce",
      "slug": "diamond",
      "core": false,
      "unlocked_by": "beer-song",
      "difficulty": 8,
      "topics": [
        "Text formatting",
        "Algorithms"
      ]
    },
    {
      "uuid": "78472676-26f0-4bef-813b-9b958c4c35df",
      "slug": "two-bucket",
      "core": false,
      "unlocked_by": "robot-simulator",
      "difficulty": 8,
      "topics": [
        "Logic"
      ]
    },
    {
      "uuid": "dead8124-6942-4205-9ea8-3cb926c0dc47",
      "slug": "connect",
      "core": false,
      "unlocked_by": "ocr-numbers",
      "difficulty": 8,
      "topics": [
        "Parsing",
        "Transforming"
      ]
    },
    {
      "uuid": "7af901ca-24ea-4c24-a660-99b1f4338e01",
      "slug": "say",
      "core": false,
      "unlocked_by": "robot-simulator",
      "difficulty": 8,
      "topics": [
        "Strings",
        "Transforming",
        "Text formatting"
      ]
    },
    {
      "uuid": "8eef5619-f331-46b3-a2c1-d581f523a815",
      "slug": "react",
      "core": false,
      "unlocked_by": "tree-building",
      "difficulty": 9,
      "topics": [
        "Reactive programming",
        "Classes",
        "Events"
      ]
    },
    {
      "uuid": "ef86703b-9e78-43f8-aa4c-203492ac622c",
      "slug": "variable-length-quantity",
      "core": false,
      "unlocked_by": "allergies",
      "difficulty": 9,
      "topics": [
        "Bitwise operations",
        "Algorithms"
      ]
    },
    {
      "uuid": "01ffa95c-1966-4031-b0d2-64f254d85b82",
      "slug": "go-counting",
      "core": false,
      "unlocked_by": "ocr-numbers",
      "difficulty": 9,
      "topics": [
        "Parsing",
        "Tuples",
        "Optional values"
      ]
    },
    {
      "uuid": "443fdb8c-1a97-4086-be6a-b541faa961a5",
      "slug": "lens-person",
      "core": false,
      "unlocked_by": "tree-building",
      "difficulty": 9,
      "topics": [
        "Lenses"
      ]
    },
    {
      "uuid": "fe0e98b3-d0d3-4bf6-bfaa-8aa0e61aa625",
      "slug": "sgf-parsing",
      "core": false,
      "unlocked_by": "ocr-numbers",
      "difficulty": 9,
      "topics": [
        "Parsing",
        "Transforming"
      ]
    },
    {
      "uuid": "3d682945-5fa1-4121-9d5b-7bac60660de9",
      "slug": "alphametics",
      "core": false,
      "unlocked_by": "ocr-numbers",
      "difficulty": 9,
      "topics": [
        "Parsing",
        "Maps"
      ]
    },
    {
      "uuid": "5369eea9-00c8-4044-b272-1ce8d0590ecf",
      "slug": "zipper",
      "core": false,
      "unlocked_by": "binary-search-tree",
      "difficulty": 10,
      "topics": [
        "Trees",
        "Recursion",
        "Searching"
      ]
    },
    {
      "uuid": "533981a1-632c-4ca8-a4ae-05f3ad1a810b",
      "slug": "forth",
      "core": false,
      "unlocked_by": "ocr-numbers",
      "difficulty": 10,
      "topics": [
        "Parsing",
        "Stacks"
      ]
    },
    {
      "uuid": "a6082751-98ca-45dc-aeed-cdd19a8da0ca",
      "slug": "pov",
      "core": false,
      "unlocked_by": "binary-search-tree",
      "difficulty": 10,
      "topics": [
        "Graphs",
        "Recursion",
        "Searching"
      ]
    }
  ],
  "foregone": [
    "flatten-array",
    "nucleotide-codons",
    "paasio",
    "point-mutations",
    "counter"
  ]
}