Spider Solitaire
Build same-suit King-to-Ace runs, clear all eight sets, and choose 1, 2 or 4 suits for the difficulty you want.
A year of Spider, one date at a time
Each day keeps separate 1-Suit, 2-Suit and 4-Suit results. Dark dots are solved; green dots are Clean. Daily, Random and Numbered deals are still never labeled guaranteed.
Today
In-progress boards
Strategy, review & deeper SpiderOptional tools stay below the table
Prefer moves that uncover a face-down card or extend a same-suit descending run.
Compare the moves that change the position
Equivalent empty-column destinations are collapsed. Scores are transparent heuristics, not optimal-play claims.
Measured opening complexity
4,096 deterministic openings per suit count. Bands describe the opening only.
Exact decision practice
Daily archiveReplay past days for the selected suit count
Local stats & learning signalsStored only in this browser
Your local learning signals
Current suit profile
How to play, fairness & privacyRules, exact resume and verified deals
Build downward by rank. A multi-card run moves together only when every card in the run shares a suit and descends by one.
Standard Spider puts one new card on every column. Relaxed Deal is optional and marks the run Assisted.
Winning mode uses only deals independently replayed to all eight completed runs. Random, Daily and numbered deals are never labeled guaranteed.
Assisted clears still count as wins but cannot replace Clean personal bests.
Reloading restores the same board, elapsed time, integrity, undo stack and redo stack, then keeps the game paused until you resume.
The game engine, verified-deal list, strategy tools and local progress all run in your browser.