3-6-9

AI-friendly board game rules summaries — use with Claude, ChatGPT, or any AI assistant

Overview

3-6-9 is a trick-taking card game using a standard 52-card deck. Players compete over multiple hands to accumulate the most points by winning tricks and capturing 3s. The twist: if you take exactly 3, 6, or 9 tricks in a hand, all points you earned that hand are subtracted from your score instead of added. This creates a delicate balance between winning enough tricks to score well and avoiding the dangerous 3/6/9 thresholds.

Components

Card Ranking: A (high), K, Q, J, 10, 9, 8, 7, 6, 5, 4, 3, 2 (low). There is no trump suit.

Setup

  1. Select the first dealer at random — each player draws a card, and the player whose card is closest to a 3 deals first.
  2. 4 players: Deal all 52 cards evenly (13 cards each).
  3. 3 players: Remove the 2 of Hearts; deal 17 cards each (9 hands per game).
  4. 5 players: Remove the 2 of Hearts and 2 of Diamonds; deal 10 cards each (10 hands per game).

Turn Structure

  1. The player to the left of the dealer leads the first trick by playing any card.
  2. Play continues clockwise. Each player must follow suit if able; otherwise, they may play any card.
  3. The highest card of the led suit wins the trick (no trumps).
  4. The trick winner leads the next trick.
  5. Won tricks should remain visible (face down) in front of each player for counting.
  6. Continue until all cards have been played.

Actions

Trick Play

There are no special actions, bids, or trumps. Pure trick-taking with the scoring twist.

Scoring / Victory Conditions

Hand Scoring

After each hand, calculate points:

The 3-6-9 Penalty

If a player takes exactly 3, 6, or 9 tricks in a hand, all points accumulated that hand are subtracted from their score rather than added.

Tricks Won Contains no 3s Contains one 3 Contains two 3s
3 (penalty) -3 -6 -9
6 (penalty) -6 -9 -12
9 (penalty) -9 -12 -15
Other numbers +tricks + (3 per captured 3) +tricks + (3 per captured 3) +tricks + (3 per captured 3)

Game Length

Winning

The player with the highest cumulative score after all hands wins.

Special Rules & Edge Cases

Player Reference

Scoring Formula:

Game Duration: | Players | Cards Dealt | Hands Played | Cards Removed | |—|—|—|—| | 3 | 17 | 9 | 2 of Hearts | | 4 | 13 | 12 | None | | 5 | 10 | 10 | 2 of Hearts, 2 of Diamonds |

Dangerous Trick Counts: 3, 6, 9 — avoid these exactly!