return {
  "jim-fx/sudoku.nvim",
  event = "VeryLazy",
  config = function()
    require("sudoku").setup({
      persist_settings = true, -- safe the settings under vim.fn.stdpath("data"), usually ~/.local/share/nvim,
      persist_games = true, -- persist a history of all played games
      default_mappings = true, -- if set to false you need to set your own, like the following:
      mappings = {
        { key = "x", action = "clear_cell" },
        { key = "r1", action = "insert=1" },
        { key = "r2", action = "insert=2" },
        { key = "r3", action = "insert=3" },
        { key = "r9", action = "insert=9" },
        { key = "gn", action = "new_game" },
        { key = "gr", action = "reset_game" },
        { key = "gs", action = "view=settings" },
        { key = "gt", action = "view=tip" },
        { key = "gz", action = "view=zen" },
        { key = "gh", action = "view=help" },
        { key = "u", action = "undo" },
        { key = "<C-r>", action = "redo" },
        { key = "+", action = "increment" },
        { key = "-", action = "decrement" },
      },
      custom_highlights = {
        board = { fg = "#7d7d7d" },
        number = { fg = "white", bg = "black" },
        active_menu = { fg = "white", bg = "black", gui = "bold" },
        hint_cell = { fg = "white", bg = "yellow" },
        square = { bg = "#292b35", fg = "white" },
        column = { bg = "#14151a", fg = "#d5d5d5" },
        row = { bg = "#14151a", fg = "#d5d5d5" },
        settings_disabled = { fg = "#8e8e8e", gui = "italic" },
        same_number = { fg = "white", gui = "bold" },
        set_number = { fg = "white", gui = "italic" },
        error = { fg = "white", bg = "#843434" },
      },
    })
  end,
}