Three hands. One match.

Rock, paper, scissors

Choose a hand, reveal together, race to the winning score.

Leave blank for a new challenge. The same seed gives the same computer throws.

Use at most 96 characters.

Player 1 chooses privately, passes the device, then Player 2 chooses. Both hands appear only after the second choice. Keep the screen turned away while choosing.

Rules and fair play

Rock beats scissors. Scissors beats paper. Paper beats rock. Matching hands tie and award no point. Ties do not use up a scoring round.

This is a casual adaptation: single-win or best-of 3, 5, 7 or 9; seeded computer choices; concealed sequential choices on one device. Computer throws do not react to your hand. Local concealment protects the screen, not against someone inspecting browser data.

Based on the core three-hand rules in WRPSA's 2026 rulebook. Independently made; not sanctioned tournament play.

Completed matches may be saved on this browser. No account or network play. Unfinished matches are not restored after leaving.

Match paused

{{ hud.firstLabel }} {{ hud.p1 }} – {{ hud.p2 }} {{ hud.secondLabel }}. First to {{ hud.target }}.

Choices and score are frozen. Resume when both players are ready.

Match complete

{{ result.summary.headline }}

{{ result.summary.detail }}

Final completed throw: {{ hud.firstLabel }} chose {{ reveal.first }}; {{ hud.secondLabel }} chose {{ reveal.second }}. {{ reveal.explanation }}

{{ hud.mode === 'solo' ? 'Same seed repeats computer throws. Repeat your choices to reproduce the match.' : 'Local outcomes depend on both players. Replay starts fresh; changing seed only changes run identity.' }}

Run details
Seed
{{ identity.seed }}
Rules
{{ identity.rulesVersion }}
Mode / length
{{ identity.config.mode }} / {{ identity.config.bestOf }}
Trace
{{ identity.trace.checksum }} · {{ identity.trace.count }} actions{{ identity.trace.truncated ? ' (trace excerpt only)' : '' }}
Snapshot
{{ identity.snapshotChecksum }}

Round ledger

{{ copyStatus }}

No completed throws.

  1. Throw {{ row.number }} · {{ row.p1 }}–{{ row.p2 }} {{ hud.firstLabel }}: {{ row.first }} / {{ hud.secondLabel }}: {{ row.second }}. {{ row.explanation }}
Browser-local match record

Up to 12 distinct completed matches. Identical replays share one record. No unfinished choices are saved; no cross-device sync.

No saved matches.

  • {{ record.identity.outcome.summary.headline }}{{ record.identity.outcome.summary.detail }}{{ record.identity.config.mode }} · best of {{ record.identity.config.bestOf }} · seed {{ record.identity.seed }}

{{ storageStatus }}

Coin Flipper Flip a fair or biased coin with fresh or seeded randomness, then compare observed counts with expected outcomes and reproducible streak history.
Dice Roller Roll tabletop dice notation with keep/drop rules, advantage, rerolls, explosions, seeded replay, and empirical target success rates.
Random Picker Pick random names or rows with reproducible seeds and optional weights, then review group limits and estimated inclusion chances before sharing the draw.
Online Tic Tac Toe Game Play tic tac toe against a second player or seeded computer, practise set openings, and use minimax hints to compare every legal move.

No single hand can beat both alternatives in rock paper scissors. Rock beats scissors, scissors beats paper, and paper beats rock. Each player commits to one of those three hands, with matching choices producing a tie rather than a winner.

In face-to-face play, both players reveal together so neither can wait to see the other hand. When choices are made in sequence, the earlier hand must stay hidden until the later choice is committed. Otherwise, the second player could simply choose the hand that beats it.

One comparison of the chosen hands is a throw. Different hands produce a decisive win for one player, while matching hands tie. A match continues until someone reaches the agreed number of decisive wins. The number of throws and the number of wins are therefore different counts.

When the game decides who starts another activity, agree on the winning score before choosing. A best-of-three match needs two decisive wins, not merely a lead after three throws. Ties can extend play beyond three throws, and the match ends as soon as someone reaches two wins. A single decisive win settles a shorter contest, but even that may require several throws if the players keep tying.

How to Use This Tool:

The starting setup is Computer with Best of 3 · first to 2. Choose Friend on this device for a match with another person using the same device.

  1. Choose your Opponent and Match length before starting.
    For computer play, leave Replay seed (optional) blank for a newly generated seed, or reuse a seed to repeat its computer sequence. The limit is 96 characters, with surrounding spaces ignored. Shorten the text if the length warning prevents starting.
  2. Select Start match and choose Rock, Paper or Scissors. Against the computer, both hands and the result appear immediately.
    With Friend on this device, Player 1's choice locks without being revealed. Keep the screen turned away while choosing, then pass the device. Player 2 selects Player 2 is ready and chooses a hand. Both hands appear after that second choice.
  3. Select Next throw after a reveal to continue, including after a tie. In shared-device play, pass back to Player 1 for the next choice. Reaching the winning score opens the match result automatically.
  4. Choose Replay same seed to start again with the same settings. New seed changes only the seed, while Change setup lets you choose another opponent or match length. The seed is shown under Run details after the match.

With the playing area itself focused, R, P and S choose rock, paper and scissors, and Escape pauses. If a letter shortcut does nothing, focus the playing area or use a hand button instead.

Select Pause when you need a break. The match also pauses when you switch tabs or move focus outside the playing area, keeping the score and any locked choice until you select Resume. Use Restart to discard current progress and begin again with the same settings and seed.

Interpreting Results:

The score counts decisive wins, not throws. After the match finishes or is ended, the Round ledger lists every completed throw with both hands, its explanation and the cumulative score after that throw. A tied row leaves the previous score unchanged.

Match ended means the match was stopped with End match. It does not award a win to the player who was ahead. A locked local choice that never received a second hand adds neither a point nor a ledger entry. The final completed throw shown in the result may therefore be an earlier throw, not that unfinished choice.

Technical Details:

Each completed throw is resolved solely by its two hands. A decisive result adds exactly one point to the winning player. A tie adds one to the tie count and leaves both scores unchanged. Elapsed time does not resolve a throw or award points.

How the hands compare

Read the table from the perspective of the player whose hand appears at the start of the row. A loss awards the point to the opponent.

Player's hand Against rock Against paper Against scissors
Rock Tie Loss Win
Paper Win Tie Loss
Scissors Loss Win Tie

Winning score

Add one to the selected match length and divide by two to find the winning score.

W = B + 1 2

B is the selected match length, using 1 for a single-win match. W is the required number of points shown as First to. All supported lengths produce whole-number scores, so no rounding is needed.

Match length Points needed to win
Single win 1
Best of 3 2
Best of 5 3
Best of 7 4
Best of 9 5

After each decisive throw, the match ends immediately if either player's score equals the required winning score. Otherwise, another throw is needed. Ties have no replay limit in the scoring rules.

For example, in a best-of-three match, Player 1 and Player 2 both choose rock, then both choose paper, leaving the score at 0–0. Player 1 wins the next throw with scissors against paper to lead 1–0, then wins with paper against rock. The match ends 2–0 after four completed throws, including two ties.

Computer throws and replay

Computer hands come from a seed-based pseudo-random sequence, not a strategy that reacts to your choice. All three hands remain available on every throw, so the same hand may repeat. Each completed computer throw uses the next choice in that sequence, including a throw that ties. Pausing does not skip a computer throw.

To reproduce a solo result, keep the same game rules and match length, reuse the seed, and make the same hand choices in the same order. Reusing only the seed does not guarantee the same final score if your choices change. In shared-device play, both hands are chosen by the players, so the seed has no effect on their choices or the score.

Privacy and Local Records:

The match is played and scored in your browser. There are no accounts, remote multiplayer matches or cross-device record syncing. Concealing a local hand hides it from the normal match display, not from someone inspecting browser data.

  • Up to 12 distinct completed matches can be saved automatically on this browser. Exact replays share one record. Matches stopped with End match are not saved.
  • Unfinished matches, including paused matches and locked choices, are not restored after leaving or reloading. Saved completed records include the seed and the choices needed to reproduce the result.
  • A match that exceeds the 4,096-action record limit cannot be saved. Choices, handoffs, pauses and other match actions count separately, rather than one action per throw. Record-size and browser-storage limits can also prevent saving when fewer than 12 records are kept.

Open Browser-local match record to review saved summaries or use Clear local record to remove them. If saved records cannot be read, you can still play normally or clear the local record. A failed save leaves the current result and ledger readable until you leave.

This is a casual adaptation of the three-hand game, not sanctioned tournament play. Points and match results have no monetary value.

References: