config.json in trackler-2.2.1.9

- old
+ new

@@ -698,13 +698,15 @@
     {
       "uuid": "5911d90f-ba2f-482f-8c92-c01c112d6fdd",
       "slug": "nucleotide-count",
       "core": false,
       "unlocked_by": null,
-      "difficulty": 1,
+      "difficulty": 2,
       "topics": [
-
+        "Strings",
+        "Parsing",
+        "Maps"
       ]
     },
     {
       "uuid": "aa598f3e-9d2b-4f9f-8c14-46e0ac27d5be",
       "slug": "grade-school",
@@ -720,162 +722,219 @@
     {
       "uuid": "62aa3d20-65d8-440f-9d08-48bbc823f4fe",
       "slug": "matrix",
       "core": false,
       "unlocked_by": null,
-      "difficulty": 1,
+      "difficulty": 4,
       "topics": [
-
+        "Matrices",
+        "Type conversion",
+        "Arrays",
+        "Exception handling",
+        "Strings"
       ]
     },
     {
       "uuid": "c78102b0-aaa3-4edb-a315-4fcdc26ccae8",
       "slug": "saddle-points",
       "core": false,
       "unlocked_by": null,
-      "difficulty": 1,
+      "difficulty": 5,
       "topics": [
-
+        "Arrays",
+        "Integers",
+        "Matrices",
+        "Searching"
       ]
     },
     {
       "uuid": "fcf735fe-a659-40ae-858e-6d1e834a4faf",
       "slug": "meetup",
       "core": false,
       "unlocked_by": null,
-      "difficulty": 1,
+      "difficulty": 3,
       "topics": [
-
+        "Dates",
+        "Time",
+        "Transforming",
+        "Type conversion"
       ]
     },
     {
       "uuid": "31c77516-6702-417e-9c6e-19c7e965d513",
       "slug": "binary-search",
       "core": false,
       "unlocked_by": null,
-      "difficulty": 1,
+      "difficulty": 5,
       "topics": [
-
+        "Algorithms",
+        "Arrays",
+        "Searching",
+        "Sorting"
       ]
     },
     {
       "uuid": "ac680609-4e52-468d-bf17-afbf7b2fa74b",
       "slug": "binary-search-tree",
       "core": false,
       "unlocked_by": null,
-      "difficulty": 1,
+      "difficulty": 5,
       "topics": [
-
+        "Algorithms",
+        "Recursion",
+        "Searching",
+        "Sorting",
+        "Structs",
+        "Trees"
       ]
     },
     {
       "uuid": "d0a2afab-e30d-4617-b646-413a44ecf2ed",
       "slug": "tree-building",
       "core": false,
       "unlocked_by": null,
-      "difficulty": 1,
+      "difficulty": 3,
       "topics": [
-
+        "Records",
+        "Refactoring",
+        "Sorting",
+        "Trees"
       ]
     },
     {
       "uuid": "4282b1f6-d1a2-41b4-9a7f-a9a145fb283b",
       "slug": "kindergarten-garden",
       "core": false,
       "unlocked_by": null,
-      "difficulty": 1,
+      "difficulty": 3,
       "topics": [
-
+        "Parsing",
+        "Records",
+        "Searching",
+        "Strings",
+        "Structs"
       ]
     },
     {
       "uuid": "7b9201fa-92d2-43fd-8b35-4c552336570b",
       "slug": "simple-cipher",
       "core": false,
       "unlocked_by": null,
-      "difficulty": 1,
+      "difficulty": 3,
       "topics": [
-
+        "Algorithms",
+        "Interfaces",
+        "Security",
+        "Strings",
+        "Transforming"
       ]
     },
     {
       "uuid": "5dbec590-7a50-4398-987b-7252734216a2",
       "slug": "paasio",
       "core": false,
       "unlocked_by": null,
-      "difficulty": 1,
+      "difficulty": 5,
       "topics": [
-
+        "Concurrency",
+        "Interfaces",
+        "Networking"
       ]
     },
     {
       "uuid": "cdbadf95-66ff-455f-bea3-eff5024afcb7",
       "slug": "pov",
       "core": false,
       "unlocked_by": null,
-      "difficulty": 1,
+      "difficulty": 7,
       "topics": [
-
+        "Graphs",
+        "Recursion",
+        "Structs",
+        "Transforming",
+        "Trees"
       ]
     },
     {
       "uuid": "3bf049f8-7283-4370-aa0c-e10e99d9ef80",
       "slug": "minesweeper",
       "core": false,
       "unlocked_by": null,
-      "difficulty": 1,
+      "difficulty": 5,
       "topics": [
-
+        "Arrays",
+        "Control-flow (loops)",
+        "Matrices",
+        "Games",
+        "Transforming"
       ]
     },
     {
       "uuid": "fc0e4034-0744-43f8-9969-7789cff0607f",
       "slug": "robot-simulator",
       "core": false,
       "unlocked_by": null,
-      "difficulty": 1,
+      "difficulty": 6,
       "topics": [
-
+        "Concurrency",
+        "Control-flow (loops)",
+        "Sequences",
+        "Strings",
+        "Structs"
       ]
     },
     {
       "uuid": "572d03ec-d763-400e-ba4f-5a6a92d5af98",
       "slug": "tournament",
       "core": false,
       "unlocked_by": null,
-      "difficulty": 1,
+      "difficulty": 3,
       "topics": [
-
+        "Integers",
+        "Parsing",
+        "Records",
+        "Sorting",
+        "Strings",
+        "Text formatting",
+        "Transforming"
       ]
     },
     {
       "uuid": "7fdf352b-e5a3-452e-91a2-03587be48ad0",
       "slug": "word-search",
       "core": false,
       "unlocked_by": null,
-      "difficulty": 1,
+      "difficulty": 4,
       "topics": [
-
+        "Matrices",
+        "Searching",
+        "Strings"
       ]
     },
     {
       "uuid": "932a7ed0-c331-49b1-917b-a197198f642a",
       "slug": "all-your-base",
       "core": false,
       "unlocked_by": null,
-      "difficulty": 1,
+      "difficulty": 3,
       "topics": [
-
+        "Integers",
+        "Mathematics",
+        "Transforming"
       ]
     },
     {
       "uuid": "395116bc-5be9-4140-a2ef-c7e8689149f2",
       "slug": "connect",
       "core": false,
       "unlocked_by": null,
-      "difficulty": 1,
+      "difficulty": 9,
       "topics": [
-
+        "Arrays",
+        "Control-flow (loops)",
+        "Games",
+        "Graphs",
+        "Searching"
       ]
     },
     {
       "uuid": "7aa53a27-4ff3-4891-809f-2af728eb55a0",
       "slug": "ledger",