Setup and opening position
Ten tableau columns hold four or five cards with only their tops face up, ten one-card trap reserves stand above them, and fifty cards remain in stock.
Trapdoor Spider
Remove both decks as eight same-suit thirteen-card King-to-Ace packets.
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How to play
Remove both decks as eight same-suit thirteen-card King-to-Ace packets.
- Ten tableau columns hold four or five cards with only their tops face up, ten one-card trap reserves stand above them, and fifty cards remain in stock.
- Tableau builds downward by rank regardless of suit, but a multi-card tail moves only when descending in one suit. A trap card may move to a legal tableau pile. Releasing the traps places all ten reserve cards on their paired columns, then refills the reserves from stock; complete suited King-to-Ace runs remove automatically.
- Remove both decks as eight same-suit thirteen-card King-to-Ace packets.
Strategy tips
- Clear suited tails before releasing a reserve row, and inspect all ten trap cards so their paired placement does not bury several nearly complete sequences.
- A mixed-suit rank run can be built but cannot move as a packet, and releasing traps affects every column rather than only the convenient reserve.
- Use the final trap release only after exposing stable suited descents, then complete packets to create space for the remaining hidden layers.
Complete guide
Rules, scoring, and strategy
Trapdoor Spider is a complete browser implementation with its own versioned rules profile. Release ten trap cards onto covered rank-building columns while preserving suited movable runs and eight automatic Spider packets.
Legal moves and game flow
Tableau builds downward by rank regardless of suit, but a multi-card tail moves only when descending in one suit. A trap card may move to a legal tableau pile. Releasing the traps places all ten reserve cards on their paired columns, then refills the reserves from stock; complete suited King-to-Ace runs remove automatically.
Winning and terminal positions
Remove both decks as eight same-suit thirteen-card King-to-Ace packets. Use the final trap release only after exposing stable suited descents, then complete packets to create space for the remaining hidden layers.
Practical strategy
Clear suited tails before releasing a reserve row, and inspect all ten trap cards so their paired placement does not bury several nearly complete sequences. A mixed-suit rank run can be built but cannot move as a packet, and releasing traps affects every column rather than only the convenient reserve.
Questions players ask
What is the objective in Trapdoor Spider?
Remove both decks as eight same-suit thirteen-card King-to-Ace packets.
Which moves are legal in Trapdoor Spider?
Tableau builds downward by rank regardless of suit, but a multi-card tail moves only when descending in one suit. A trap card may move to a legal tableau pile. Releasing the traps places all ten reserve cards on their paired columns, then refills the reserves from stock; complete suited King-to-Ace runs remove automatically.
What should I plan first in Trapdoor Spider?
Clear suited tails before releasing a reserve row, and inspect all ten trap cards so their paired placement does not bury several nearly complete sequences.
Related games
FreeCellUse four open cells to reorganize a fully visible deal and build every suit onto its foundation.Beleaguered CastleBuild four suited foundations from a fully exposed eight-column deal, using empty columns and rank-only tableau moves to free blocked cards.Four SeasonsBuild wrapping suited foundations from a random base rank around a five-card cross, with rank-only wrapping tableau piles.Cruel SolitaireBuild suited foundations from twelve four-card piles, using same-suit descents and order-preserving packet redeals to reopen the layout.
