Grand Duchess

You complete Grand Duchess when both decks complete the four ascending and four descending suited foundations by the end of the final reserve-free round. The full Grand Duchess position determines the outcome; visual shortcuts never replace the documented Grand Duchess terminal rule.

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How to play

You complete Grand Duchess when both decks complete the four ascending and four descending suited foundations by the end of the final reserve-free round. The full Grand Duchess position determines the outcome; visual shortcuts never replace the documented Grand Duchess terminal rule.

  • Grand Duchess begins with four tableau piles, two face-down reserve positions, eight bidirectional suited foundations, and stock arranged for three structured rounds. The Grand Duchess deal identity and PySolFC Grand Duchess v1 are stored together. Restarting Grand Duchess reproduces this opening exactly.
  • During Grand Duchess, you build foundations from exposed tableau or reserve cards, deal the next round with reserve cards during early phases, and redeal remaining tableau in order. The Grand Duchess engine rejects profile violations, unavailable material, and every action attempted after Grand Duchess reaches a terminal result.
  • You complete Grand Duchess when both decks complete the four ascending and four descending suited foundations by the end of the final reserve-free round. The full Grand Duchess position determines the outcome; visual shortcuts never replace the documented Grand Duchess terminal rule.

Strategy tips

  • A reliable Grand Duchess plan is to track cards entering the hidden reserves during the first rounds and balance foundation directions so each reveal has a legal destination. A Grand Duchess hint is legal and deterministic. The next Grand Duchess hint exposes one bounded action; it never claims a forced Grand Duchess win.
  • A costly Grand Duchess mistake is to expect reserve positions on the final round; the state machine permanently disables them after the documented phase transition. Undo supports studying that Grand Duchess decision, while restart preserves the original seeded Grand Duchess opening.
  • In the Grand Duchess endgame, enter the last deal with middle ranks already distributed between directions, because no hidden reserve will provide extra timing space. Check every remaining Grand Duchess action before committing because its terminal rule is enforced immediately.

Complete guide

Rules, scoring, and strategy

Grand Duchess uses the independently implemented PySolFC Grand Duchess v1 profile (R302). Grand Duchess is a complete deterministic browser game built around four work piles, two hidden reserves revealed between rounds, paired Ace-up and King-down foundations, and a final deal phase without reserve cards.

Setup and opening position

Grand Duchess begins with four tableau piles, two face-down reserve positions, eight bidirectional suited foundations, and stock arranged for three structured rounds. The Grand Duchess deal identity and PySolFC Grand Duchess v1 are stored together. Restarting Grand Duchess reproduces this opening exactly.

Legal moves and game flow

During Grand Duchess, you build foundations from exposed tableau or reserve cards, deal the next round with reserve cards during early phases, and redeal remaining tableau in order. The Grand Duchess engine rejects profile violations, unavailable material, and every action attempted after Grand Duchess reaches a terminal result.

Winning and terminal positions

You complete Grand Duchess when both decks complete the four ascending and four descending suited foundations by the end of the final reserve-free round. The full Grand Duchess position determines the outcome; visual shortcuts never replace the documented Grand Duchess terminal rule. In the Grand Duchess endgame, enter the last deal with middle ranks already distributed between directions, because no hidden reserve will provide extra timing space. Check every remaining Grand Duchess action before committing because its terminal rule is enforced immediately.

Practical strategy

A reliable Grand Duchess plan is to track cards entering the hidden reserves during the first rounds and balance foundation directions so each reveal has a legal destination. A Grand Duchess hint is legal and deterministic. The next Grand Duchess hint exposes one bounded action; it never claims a forced Grand Duchess win. A costly Grand Duchess mistake is to expect reserve positions on the final round; the state machine permanently disables them after the documented phase transition. Undo supports studying that Grand Duchess decision, while restart preserves the original seeded Grand Duchess opening.

Questions players ask

What makes Grand Duchess a separate game?

Grand Duchess uses four work piles, two hidden reserves revealed between rounds, paired Ace-up and King-down foundations, and a final deal phase without reserve cards. That rule belongs to the Grand Duchess engine and storage identity rather than a cosmetic preset.

Which edge rule matters most in Grand Duchess?

Reserve cards are dealt and revealed only in the early rounds; the final round changes phase and deals exclusively to the four working piles.

How is a Grand Duchess position reproduced?

Grand Duchess records its game ID, rules version, and seeded deal identity. Those Grand Duchess values recreate the same opening without a server request.