<h1>Doublets</h1>
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One-Deck game type. 1 deck. 2 redeals.

<h3>Object</h3>
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Move all cards except the four Kings to the single foundation.

<h3>Rules</h3>
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The base rank for the foundation is determined at game start,
and it builds up by doubling the rank ignoring suit:
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A, 2, 4, 8, 3, 6, Q, J, 9, 5, 10, 7, A, repeat...
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The 7 reserve piles are automatically filled from the waste or talon.
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Kings are blocking, therefore all Kings in the first 8 cards
are put at the bottom of the talon during game start.

<h3>Notes</h3>
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<i>Autodrop</i> is disabled for this game.