Fort

Complete Fort when every card reaches its exact legal foundation under the game's direction, suit, rank and capacity restrictions. The engine checks the complete card partition and terminal rule rather than a visual approximation.

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How to play

Complete Fort when every card reaches its exact legal foundation under the game's direction, suit, rank and capacity restrictions. The engine checks the complete card partition and terminal rule rather than a visual approximation.

  • Fort reconstructs its exact pile counts, concealed-card mask, seeded foundations and stock remainder from the route seed. The stock exposes 1 card per legal action before any source-defined redeal transition. Restart reproduces the same deal locally without a network request.
  • A move is accepted only when its source is exposed, its packet satisfies any, and its destination satisfies none plus the any vacancy gate. Invalid, stale, non-finite and post-terminal actions do not mutate state.
  • Complete Fort when every card reaches its exact legal foundation under the game's direction, suit, rank and capacity restrictions. The engine checks the complete card partition and terminal rule rather than a visual approximation.

Strategy tips

  • In Fort, treat every braid, reserve, cell and vacancy as a bounded planning resource. A twenty-one-card braid refills four output lanes, eight helper slots accept only waste or returning foundation cards, and paired suit foundations grow upward from Aces and downward from Kings through two redeals.
  • The most common Fort error is placing braid or outlet cards into helper sites that accept only waste or returning foundation cards; a move that works in a neighbouring solitaire can be rejected or strategically fatal in this exact profile.
  • Before the final commitment in Fort, count every live card, locked source and legal destination. Confirm that every card reaches its exact legal foundation under the game's direction, suit, rank and capacity restrictions.

Complete guide

Rules, scoring, and strategy

Fort uses the independently implemented Fort PySolFC 3.6.1 fixed rules v1 profile (R920). Fort is an independently versioned browser card game defined by this source-audited rule: A twenty-one-card braid refills four output lanes, eight helper slots accept only waste or returning foundation cards, and paired suit foundations grow upward from Aces and downward from Kings through two redeals.

Setup and opening position

Fort reconstructs its exact pile counts, concealed-card mask, seeded foundations and stock remainder from the route seed. The stock exposes 1 card per legal action before any source-defined redeal transition. Restart reproduces the same deal locally without a network request.

Legal moves and game flow

A move is accepted only when its source is exposed, its packet satisfies any, and its destination satisfies none plus the any vacancy gate. Invalid, stale, non-finite and post-terminal actions do not mutate state.

Winning and terminal positions

Complete Fort when every card reaches its exact legal foundation under the game's direction, suit, rank and capacity restrictions. The engine checks the complete card partition and terminal rule rather than a visual approximation. Before the final commitment in Fort, count every live card, locked source and legal destination. Confirm that every card reaches its exact legal foundation under the game's direction, suit, rank and capacity restrictions.

Practical strategy

In Fort, treat every braid, reserve, cell and vacancy as a bounded planning resource. A twenty-one-card braid refills four output lanes, eight helper slots accept only waste or returning foundation cards, and paired suit foundations grow upward from Aces and downward from Kings through two redeals. The most common Fort error is placing braid or outlet cards into helper sites that accept only waste or returning foundation cards; a move that works in a neighbouring solitaire can be rejected or strategically fatal in this exact profile.

Questions players ask

Why is Fort a separate game?

Fort has its own engine ID, save namespace and rules fingerprint because A twenty-one-card braid refills four output lanes, eight helper slots accept only waste or returning foundation cards, and paired suit foundations grow upward from Aces and downward from Kings through two redeals.

What should I check before moving in Fort?

Check source exposure, packet integrity, the exact vacancy gate and the next forced stock or reserve consequence; then treat every braid, reserve, cell and vacancy as a bounded planning resource.

Is every Fort deal guaranteed winnable?

No. The seed guarantees reproducibility and the engine guarantees legal transitions, but the catalog does not claim that every shuffled deal is solvable.