Interactive demo

Play White. Black forecasts back.

Play White through a conversational prompt. Black shortlists its strongest legal replies, compares them with a bounded 1, 10, 50, or 100-move consequence forecast, applies its choice, and returns the turn to you. Continue until checkmate or draw.

No hidden chain-of-thought Legal moves only Black auto-replies Full game to checkmate

Live runtimeYou play White Black forecasts and replies White to move

Tell White what to play

Use ordinary language, algebraic notation, or coordinates—for example, "move my pawn from e2 to e4", "Nf3", or "e2 to e4". Black will forecast the consequences, choose a legal reply, and return the turn to you.

Try:

Predictive forecast

Choose how many alternating moves Black should forecast when ranking its replies. Neutron then projects your next position. Longer lines carry more uncertainty.

Each request applies your White move and Black's forecasted reply. The browser keeps the game; forecasts remain illustrative.

Current position

White to move

0 moves played

Consequence as you play

Make the first move

Describe a legal White move above. Neutron will apply it, forecast Black's legal replies, play the highest-ranked response, explain both consequences, and return the board to you.

Moves played

Actual moves, separate from the forecast

No moves played yet.

The board is the simplest possible consequence model.

The same product capability applies bounded lookahead, uncertainty, and reviewable outcomes to agent decisions backed by permissioned Nucleus memory and durable workflows.

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