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exercism · Feb 1, 2025 · 73739df · 73739df
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diff --git a/exercises/practice/anagram/.docs/instructions.md b/exercises/practice/anagram/.docs/instructions.md
@@ -1,13 +1,12 @@
 # Instructions
 
-Your task is to, given a target word and a set of candidate words, to find the subset of the candidates that are anagrams of the target.
+Given a target word and one or more candidate words, your task is to find the candidates that are anagrams of the target.
 
 An anagram is a rearrangement of letters to form a new word: for example `"owns"` is an anagram of `"snow"`.
 A word is _not_ its own anagram: for example, `"stop"` is not an anagram of `"stop"`.
 
-The target and candidates are words of one or more ASCII alphabetic characters (`A`-`Z` and `a`-`z`).
-Lowercase and uppercase characters are equivalent: for example, `"PoTS"` is an anagram of `"sTOp"`, but `StoP` is not an anagram of `sTOp`.
-The anagram set is the subset of the candidate set that are anagrams of the target (in any order).
-Words in the anagram set should have the same letter case as in the candidate set.
+The target word and candidate words are made up of one or more ASCII alphabetic characters (`A`-`Z` and `a`-`z`).
+Lowercase and uppercase characters are equivalent: for example, `"PoTS"` is an anagram of `"sTOp"`, but `"StoP"` is not an anagram of `"sTOp"`.
+The words you need to find should be taken from the candidate words, using the same letter case.
 
-Given the target `"stone"` and candidates `"stone"`, `"tones"`, `"banana"`, `"tons"`, `"notes"`, `"Seton"`, the anagram set is `"tones"`, `"notes"`, `"Seton"`.
+Given the target `"stone"` and the candidate words `"stone"`, `"tones"`, `"banana"`, `"tons"`, `"notes"`, and `"Seton"`, the anagram words you need to find are `"tones"`, `"notes"`, and `"Seton"`.
diff --git a/exercises/practice/food-chain/.meta/config.json b/exercises/practice/food-chain/.meta/config.json
@@ -11,6 +11,9 @@
     ],
     "example": [
       ".meta/src/example.art"
+    ],
+    "invalidator": [
+      "tester.art"
     ]
   },
   "blurb": "Generate the lyrics of the song 'I Know an Old Lady Who Swallowed a Fly'.",

diff --git a/exercises/practice/grains/.meta/config.json b/exercises/practice/grains/.meta/config.json
@@ -18,5 +18,5 @@
   },
   "blurb": "Calculate the number of grains of wheat on a chessboard given that the number on each square doubles.",
   "source": "The CodeRanch Cattle Drive, Assignment 6",
-  "source_url": "https://coderanch.com/wiki/718824/Grains"
+  "source_url": "https://web.archive.org/web/20240908084142/https://coderanch.com/wiki/718824/Grains"
 }
diff --git a/exercises/practice/isbn-verifier/.meta/config.json b/exercises/practice/isbn-verifier/.meta/config.json
@@ -11,6 +11,9 @@
     ],
     "example": [
       ".meta/src/example.art"
+    ],
+    "invalidator": [
+      "tester.art"
     ]
   },
   "blurb": "Check if a given string is a valid ISBN-10 number.",

diff --git a/exercises/practice/leap/.meta/config.json b/exercises/practice/leap/.meta/config.json
@@ -18,5 +18,5 @@
   },
   "blurb": "Determine whether a given year is a leap year.",
   "source": "CodeRanch Cattle Drive, Assignment 3",
-  "source_url": "https://coderanch.com/t/718816/Leap"
+  "source_url": "https://web.archive.org/web/20240907033714/https://coderanch.com/t/718816/Leap"
 }
diff --git a/exercises/practice/matrix/.meta/config.json b/exercises/practice/matrix/.meta/config.json
@@ -11,6 +11,9 @@
     ],
     "example": [
       ".meta/src/example.art"
+    ],
+    "invalidator": [
+      "tester.art"
     ]
   },
   "blurb": "Given a string representing a matrix of numbers, return the rows and columns of that matrix.",

diff --git a/exercises/practice/rna-transcription/.meta/config.json b/exercises/practice/rna-transcription/.meta/config.json
@@ -16,7 +16,7 @@
       "tester.art"
     ]
   },
-  "blurb": "Given a DNA strand, return its RNA Complement Transcription.",
+  "blurb": "Given a DNA strand, return its RNA complement.",
   "source": "Hyperphysics",
   "source_url": "https://web.archive.org/web/20220408112140/http://hyperphysics.phy-astr.gsu.edu/hbase/Organic/transcription.html"
 }
diff --git a/exercises/practice/sieve/.meta/config.json b/exercises/practice/sieve/.meta/config.json
@@ -11,6 +11,9 @@
     ],
     "example": [
       ".meta/src/example.art"
+    ],
+    "invalidator": [
+      "tester.art"
     ]
   },
   "blurb": "Use the Sieve of Eratosthenes to find all the primes from 2 up to a given number.",

diff --git a/exercises/practice/transpose/.meta/config.json b/exercises/practice/transpose/.meta/config.json
@@ -11,6 +11,9 @@
     ],
     "example": [
       ".meta/src/example.art"
+    ],
+    "invalidator": [
+      "tester.art"
     ]
   },
   "blurb": "Take input text and output it transposed.",

diff --git a/exercises/practice/twelve-days/.meta/config.json b/exercises/practice/twelve-days/.meta/config.json
@@ -11,6 +11,9 @@
     ],
     "example": [
       ".meta/src/example.art"
+    ],
+    "invalidator": [
+      "tester.art"
     ]
   },
   "blurb": "Output the lyrics to 'The Twelve Days of Christmas'.",