B Set 99 Unknown

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{
    "title": "Medium River Crossing Puzzle #99",
    "scenario": "Pirate Treasure",
    "narrative": "Three pirates and one treasure chest must cross a river. The rowboat holds 2 passengers (pirates or chest). If a pirate is alone with the chest and another pirate is on the other bank, he will steal it.",
    "entities": [
        {
            "id": "p1",
            "name": "Pirate 1",
            "icon": "🏴‍☠️"
        },
        {
            "id": "p2",
            "name": "Pirate 2",
            "icon": "🏴‍☠️"
        },
        {
            "id": "p3",
            "name": "Pirate 3",
            "icon": "🏴‍☠️"
        },
        {
            "id": "t1",
            "name": "Treasure Chest",
            "icon": "💰"
        }
    ],
    "boatCapacity": 2,
    "constraints": [
        "The boat holds at most 2.",
        "The chest cannot be left with only 1 pirate (he will take it).",
        "All three pirates must accompany the chest at journey's end."
    ],
    "question": "Describe a valid sequence of crossings that gets everyone to the other side without violating any constraint. What is the minimum number of trips required?",
    "solution": [
        {
            "trip": 1,
            "direction": "→",
            "carrying": [
                "Pirate 1",
                "Pirate 2"
            ],
            "leftBank": "P3,Chest",
            "rightBank": "P1,P2",
            "note": "2 pirates cross."
        },
        {
            "trip": 2,
            "direction": "←",
            "carrying": [
                "Pirate 1"
            ],
            "leftBank": "P1,P3,Chest",
            "rightBank": "P2",
            "note": "P1 returns."
        },
        {
            "trip": 3,
            "direction": "→",
            "carrying": [
                "Pirate 1",
                "Chest"
            ],
            "leftBank": "P3",
            "rightBank": "P1,P2,Chest",
            "note": "P1 takes chest across."
        },
        {
            "trip": 4,
            "direction": "←",
            "carrying": [
                "Pirate 2"
            ],
            "leftBank": "P2,P3",
            "rightBank": "P1,Chest",
            "note": "P2 returns."
        },
        {
            "trip": 5,
            "direction": "→",
            "carrying": [
                "Pirate 2",
                "Pirate 3"
            ],
            "leftBank": "",
            "rightBank": "All",
            "note": "P2 and P3 cross. Done!"
        }
    ],
    "minimumTrips": 5,
    "hint": "The first 2 move(s) of the solution are shown below to help you start.",
    "partialSolutionHint": [
        {
            "trip": 1,
            "direction": "→",
            "carrying": [
                "Pirate 1",
                "Pirate 2"
            ],
            "leftBank": "P3,Chest",
            "rightBank": "P1,P2",
            "note": "2 pirates cross."
        },
        {
            "trip": 2,
            "direction": "←",
            "carrying": [
                "Pirate 1"
            ],
            "leftBank": "P1,P3,Chest",
            "rightBank": "P2",
            "note": "P1 returns."
        }
    ],
    "_archetype": null,
    "_generatorId": null
}