Dominoes — Classic Double-Six vs AI

Play double-six dominoes against the computer. Match pips to extend the chain. Block & Draw rules — empty your hand or end with the lowest pip total. Free in browser.

#classic #strategy #single-player #tile

How to play

Tap a playable tile in your hand — if both ends match, pick the side with the arrow buttons. Use Draw when you can't play and the boneyard still has tiles, or Pass when it's empty. First to empty their hand wins, or lower pip total if blocked.

About Dominoes — Classic Double-Six vs AI

Dominoes is one of the oldest tile-based games still played at the kitchen table. It originated in 13th-century China as Bone Tiles (Gupai) before reaching Italy in the 18th century and spreading across Europe as a folk game. The familiar Western set is the double-six — twenty-eight tiles covering every pip pairing from 0-0 to 6-6, with a total of 168 pips spread across them.

This version plays the Block & Draw variant. Each side starts with seven tiles; the rest of the set sits in the boneyard. The player holding the highest double leads, and from there you take turns extending a chain — your tile's pip must touch an open end of the line. Run out of tiles to call "Domino" and win, or block both players from moving and resolve by pip count.

Our AI keeps a simple but effective heuristic: when it can play, it dumps the highest-pip tile available, with a bonus for doubles. That's not optimal — a serious player would track which suits the opponent is short on — but it makes the AI a sturdy opponent: aggressive on offence, sloppy on endgame, beatable with careful tile counting.

Tips & strategy

  • Track what's been played. If five 4-tiles have gone, only two 4s remain in play and your opponent can't have many.
  • Doubles are the hardest tiles to dump — play them early, especially the high ones (6-6 alone is worth 12 pips).
  • When you have both ends matched by the same tile, choose the side that keeps your hand flexible — usually the side leading to a longer chain of pip values you still hold.
  • If you've forced the opponent into the boneyard repeatedly, expect a block — the deeper they draw, the more pip total they accumulate.
  • Watch the open ends. If they're both showing a number you have many of, you can dominate the next two turns.
  • On a block, your pip total wins. The math says hold a single double-six (12 pips) hopefully beats holding three 3s (9 + 3 + something).
  • Avoid playing 6-blank against an open 6 if you have other 6s — you've left yourself with a pip-heavy blank you can rarely shed.

Frequently asked questions

How many tiles in a double-six set?

Twenty-eight, covering every pip pair from 0-0 to 6-6. Their pips sum to 168, with each pip value (0 through 6) appearing on exactly eight tiles (the seven pairings plus one double).

Who plays first?

The player holding the highest double. If 6-6 is in the boneyard, the lead falls to whoever has 5-5, and so on. If no doubles were dealt, the player with the heaviest single tile leads with it.

What does "block" mean?

Both players pass on consecutive turns because no one can extend the chain. The round ends and the player with the lower total pip count in hand wins. Ties are possible.

Can I draw if I'm able to play?

No. The Draw button is only enabled when no tile in your hand matches an open end and the boneyard still has tiles. Drawing fishes one tile at a time until a playable one comes up.

What's the highest possible pip total?

168 total pips across all 28 tiles. A single hand of 7 ranges from 0 (impossible — would mean 0-0 alone) to 71 (if you somehow held the seven heaviest doubles, also impossible). Typical hands start at 30–60 pips.

How does the AI decide its play?

It picks the playable tile with the highest pip sum, with a +4 bonus for doubles. That mimics the human heuristic of "dump heavy and offload doubles early" — strong against beginners, beatable with careful planning.