An endgame OSRS bingo board for maxed clans: raid uniques, Inferno, elite diaries and long grinds. Free 5x5 board built so an afternoon cannot clear it.
A maxed clan clears a normal bingo board before the first evening is over, and then the event is finished and nobody says so. The fix is not more tiles - it is tiles with a floor under them, where the fastest possible completion still takes hours.
Everything in this pool is either a long grind, a real skill check, or a drop rare enough to survive a weekend of attempts. It is deliberately brutal, and it is the only board here where a team scoring eight of twenty-five tiles is a good result.
Run it longer. A week is the right length for this board; a weekend produces a board with most tiles still open.
Weight the points steeply. If a Twisted bow is worth the same as an elite diary, the board rewards logging in rather than committing.
Publish the hiscores baseline and the collection log baselines publicly. At this level the arguments are about what counted, not about what dropped.
The board above is drawn from this pool. Swap any tile for another at the same difficulty and the points stay balanced.
Use tiles with a time floor - raid counts, Inferno, elite diaries, 5m XP thresholds - rather than tiles with a difficulty ceiling. A maxed player can do anything; they cannot do everything quickly.
Yes, as the top tier only. Rares decide close events, but a board built on them is a lottery, and a maxed clan notices faster than anyone.
This board is free to copy, edit and post. Tracking 25 tiles across a clan - submissions, screenshot approval, team standings, Discord updates - is the part that eats a host's weekend. An OSRSHub server does that for $12.10/month.