"missionaries and cannibals problem" meaning in English

{
  "forms": [
    {
      "form": "missionaries and cannibals problems",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "args": {},
      "expansion": "missionaries and cannibals problem (plural missionaries and cannibals problems)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
        },
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          "name": "Pages with 1 entry",
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          "source": "w"
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      ],
      "glosses": [
        "A logic puzzle in which a number of missionaries and cannibals must cross a river using a boat which can carry only a limited number of people, under the constraint that missionaries must never be outnumbered by cannibals on either bank (since they would otherwise be eaten)."
      ],
      "id": "en-missionaries_and_cannibals_problem-en-noun-Ru~V3YAN",
      "links": [
        [
          "logic",
          "logic"
        ],
        [
          "puzzle",
          "puzzle"
        ]
      ],
      "related": [
        {
          "word": "jealous husbands problem"
        }
      ]
    }
  ],
  "word": "missionaries and cannibals problem"
}

{
  "forms": [
    {
      "form": "missionaries and cannibals problems",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "missionaries and cannibals problem (plural missionaries and cannibals problems)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "jealous husbands problem"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry"
      ],
      "glosses": [
        "A logic puzzle in which a number of missionaries and cannibals must cross a river using a boat which can carry only a limited number of people, under the constraint that missionaries must never be outnumbered by cannibals on either bank (since they would otherwise be eaten)."
      ],
      "links": [
        [
          "logic",
          "logic"
        ],
        [
          "puzzle",
          "puzzle"
        ]
      ]
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  ],
  "word": "missionaries and cannibals problem"
}