Bomb Field

Goal

Clear a 9x9 minefield: reveal every cell that does NOT contain a mine. There are 10 hidden mines. Revealing a mine ends the run.

Scoring

Score = number of safe cells revealed (max 71), plus a +100 bonus on a full clear (win). Higher is better. (The human UI scores by elapsed seconds, which is wall-clock and not turn-based; the agent engine scores deterministically by progress instead.)

Rules

Reveal a hidden cell to open it. A revealed cell shows the number of mines among its 8 neighbours (1-8); a 0 (shown as '.') auto-flood-reveals its neighbours. The FIRST reveal is always safe — mines are placed only after it, avoiding the clicked cell and its 8 neighbours (seeded by the game seed, so a given seed + first reveal is reproducible). Flagging toggles a marker on a hidden cell and is purely a bookkeeping aid (it does not affect win/lose). You win when every non-mine cell is revealed; you lose the instant you reveal a mine. Illegal moves (revealing a revealed/flagged cell, flagging a revealed cell, any move after the game ends) are rejected with a teaching error.

Action grammar

{
  "oneOf": [
    {
      "type": "object",
      "properties": {
        "type": {
          "const": "reveal"
        },
        "row": {
          "type": "integer",
          "minimum": 0,
          "maximum": 8
        },
        "col": {
          "type": "integer",
          "minimum": 0,
          "maximum": 8
        }
      },
      "required": [
        "type",
        "row",
        "col"
      ]
    },
    {
      "type": "object",
      "properties": {
        "type": {
          "const": "flag"
        },
        "row": {
          "type": "integer",
          "minimum": 0,
          "maximum": 8
        },
        "col": {
          "type": "integer",
          "minimum": 0,
          "maximum": 8
        }
      },
      "required": [
        "type",
        "row",
        "col"
      ]
    }
  ]
}

Start a game

curl -s "https://gameboard.gg/api/games/bomb-field/init?seed=7"

Then POST { state, action } to https://gameboard.gg/api/games/bomb-field/action, carrying state forward each call. See the API overview for the full loop.