By Online Solitaire Free Editorial Team · Editorial Standards
Learn about unique solitaire rules. Discover strategies, tips, and guides for playing free solitaire games online.
Standard solitaire rules cluster around a recognisable set of conventions: tableau builds in descending rank alternating colour or same suit, foundations build from Ace to King in suit, the stock provides additional cards one or three at a time, and the win condition is moving all cards to the foundations. The vast majority of patience variants are permutations of this template — adjusting the number of tableau columns, the stock draw count, the build direction, or the information available to the player — without departing from the template's fundamental structure. Unusual rules break from the template in ways that create qualitatively different strategic problems: win conditions that do not involve foundations at all, build directions that go up instead of down, movement rules that allow any face-up card to move with its entire sub-stack, scoring systems that replace the binary win/loss outcome with a continuous score variable, and game structures that replace the sequential card placement with simultaneous accessibility across the full tableau.
Each departure from the standard template invalidates a different subset of conventional strategy. A variant with no foundations invalidates all foundation-timing strategy and endgame sequencing habits. A variant with ascending tableau builds inverts the direction component of every build evaluation. A variant with unrestricted sub-stack movement eliminates the card-by-card accessibility constraints that make blocking patterns possible. A variant with a scoring system replaces the binary resign/continue decision with a continuous optimisation problem. Understanding which rules make a variant unusual — and which conventional strategy components each unusual rule invalidates — is the most efficient way to approach a new unusual-rules variant without re-learning from scratch: keep the strategy components that remain valid, replace only the components the unusual rule specifically invalidates.
This article covers the major categories of unusual solitaire rules, specific examples of variants in each category, which conventional strategy components transfer and which must be replaced, and the strategic habits that develop most efficiently in unusual-rules variants and transfer back to standard play.
The standard solitaire template has four rule components that unusual variants modify: the movement rule (which cards can move and how); the build rule (what can be placed on what); the win condition (how the game is completed); and the information rule (which cards are visible to the player). Most mainstream variants hold three of these four constant and modify one — Klondike uses standard movement, standard descending-alternating build, standard foundation win condition, and modifies the information rule with face-down cards. FreeCell uses standard build, standard win condition, standard information (all visible), and modifies the movement rule with free cells. Spider modifies the build rule (same suit for multi-card moves). Unusual-rules variants typically modify two or more of these simultaneously, producing the qualitatively different strategic environments that make them genuinely distinct from both the mainstream set and from each other.
Category 1: No-foundation win conditions. Accordion and Nestor (from the rare variants guide) have no foundation pile — the win condition is clearing the tableau by consolidation or pairing rather than building four suit piles. The strategic consequence of eliminating foundations is eliminating all foundation-timing decisions: there is no question of when to place a card on the foundation, no foundation balance principle to maintain, and no endgame sequencing problem arising from foundation advancement order. The strategy problem shifts entirely to tableau organisation and accessibility planning. Players from standard solitaire must explicitly switch off foundation-related decision habits and replace them with tableau-clearance planning — a qualitatively different optimisation target that requires new position assessment criteria.
Category 2: Ascending tableau builds. Most patience games build tableau sequences downward in rank. Some variants — including certain versions of Pyramid and the matching games — build upward, or build in both directions simultaneously (rank-adjacent both higher and lower). Golf Solitaire builds in both rank directions: any card adjacent in rank to the current top of the discard chain can be played, regardless of whether it is higher or lower. This bidirectional build rule makes every face-up card a potential chain-extender in two directions simultaneously, which doubles the effective branching factor of chain evaluation compared to a unidirectional build. The strategic implication: in Golf, the optimal scan before each stock draw must evaluate both rank-above and rank-below adjacencies for every face-up tableau card, not just one direction. Players transitioning from descending-only builds will systematically under-evaluate chain-extension opportunities in the upward direction until the bidirectional scan becomes habitual.
Category 3: Unrestricted sub-stack movement. Standard Klondike allows only face-up cards that are in legal descending-alternating sequence to be moved as a unit. Yukon Solitaire allows any face-up card to be moved along with all cards on top of it, regardless of whether those cards form a legal sequence among themselves. This rule removes the movement constraint that makes blocking patterns the central strategic challenge in Klondike — in Yukon, there is no stuck position caused by a card being blocked by a non-sequential stack above it, because any face-up card can be moved regardless of what is above it. The strategic consequence: positional planning in Yukon is less about creating movement opportunities (they always exist for any face-up card) and more about sequencing the order in which face-down stacks are uncovered and the order in which free columns are used. Players who expect blocking patterns as the primary difficulty in Yukon will find the game surprisingly fluid — and may fail to notice that Yukon's challenge is timing and sequencing rather than accessibility unlocking.
Category 4: Scoring systems replacing binary outcomes. Golf Solitaire and some TriPeaks implementations replace the binary win/lose outcome with a score: in Golf, each unplayed card remaining at the end of a hand is a penalty point (sometimes called "strokes"), and the goal over multiple hands is to minimise the cumulative penalty score toward zero (a "hole-in-one" hand) or below par. TriPeaks scores each card cleared in a chain with increasing multipliers, rewarding longer chains with disproportionately higher scores. These scoring systems change the decision problem structurally: instead of the binary "will this move sequence lead to a win?" evaluation, the player evaluates "will this move sequence maximise my score?" — which may involve different optimal choices than the binary evaluation, particularly near the end of a hand where a binary-win is unachievable but score-maximisation still has meaningful options. Players from binary-outcome variants will tend to resign positions that have no path to a complete clear — missing the scoring value of continuing to extend chains or clear cards even when a perfect result is unachievable.
Category 5: Tableau-position-dependent build rules. Osmosis (from the rare variants guide) has a build rule that depends not on the card being placed but on the current state of the adjacent foundation: a card can only be placed on a foundation pile if the same rank already appears on the foundation directly above it. This positional dependency — the legality of a move depends on another pile's current state rather than on the card's own rank or suit — is absent from all standard variants and requires a fundamentally different move-legality evaluation process. Instead of checking only the target pile and the card being moved, the player must check a third element (the adjacent foundation's current top rank) before any placement can be evaluated. Developing the three-element move-legality check as a habit requires explicitly replacing the two-element check that standard play automates.
Category 6: Reserve piles with special access rules. Stonewall/Flower Garden (from the rare variants guide) has a 16-card reserve that is fully accessible in any order — any of the 16 reserve cards can be played at any moment. This complete-accessibility reserve is structurally different from both the stock (which is accessed sequentially) and the free cells in FreeCell (which hold only one card each). The strategic challenge of a fully-accessible reserve is the reverse of the standard resource-preservation problem: instead of asking "can I access the card I need?" (always yes, for any of the 16 reserve cards), the player asks "which of the accessible reserve cards should I play now versus preserve for later?" This inversion of the accessibility problem — from constrained access to constrained timing — requires a different reserve management framework than either stock discipline or free cell rationing.
Category 7: Positional win conditions. Sultan and Windmill (from the two-decks guide) have win conditions that involve achieving a specific spatial arrangement rather than simply filling foundation piles of arbitrary position. Sultan's win condition requires the completed foundations to form a specific 3×3 grid surrounding a fixed central card; Windmill's win condition requires all 104 cards distributed across five specific foundations in specific proportions. These spatial win conditions add a layout constraint to the standard foundation-completion goal — not just "fill the foundations" but "fill them in the right positions." The strategic consequence: move decisions in positional-win-condition variants must evaluate not just whether a foundation placement is correct in rank and suit but whether it contributes to the required spatial arrangement. This spatial awareness requirement is absent from all standard variants and must be explicitly developed.
Category 8: Deterministic redeal mechanics. Cruel Patience (from the rare variants guide) redeals its tableau without shuffling — cards are picked up in pile order and redealt four at a time, creating a new pile arrangement from the same card ordering. This deterministic redeal means that the player who understands the redeal mechanics can predict the new arrangement before triggering it: if the current pile ordering is known, the post-redeal pile arrangement is fully calculable. This predictability transforms the redeal decision from a probabilistic bet into a deterministic calculation — the player can know in advance whether the redeal will produce a better or worse position before committing to it. The strategy skill is therefore not redeal timing under uncertainty (as in La Belle Lucie, where the single redeal involves shuffling) but redeal timing under certainty, requiring the calculation of whether the deterministic new arrangement has more productive move sequences than the current arrangement.
Golf's bidirectional scan improves the standard tableau scan. Developing the habit of scanning both rank-above and rank-below adjacencies for every face-up card in Golf — necessary because Golf's build rule works in both directions — transfers back to standard Klondike play as an expanded tableau scan that catches more potential moves than the descending-only scan. Specifically, it improves the player's detection of uncovering chains that require a sequence of alternating build directions, which can be missed by players whose scan habit is purely descending-focused.
Yukon's unrestricted movement habit improves planning depth in Klondike. Because Yukon allows any face-up card to move with its sub-stack, Yukon play develops the habit of evaluating card positions as units — considering the full stack above a card rather than only the card's immediate accessibility. Bringing this unit-evaluation habit back to Klondike improves the recognition of uncovering chains: instead of evaluating whether an individual card is accessible, the player evaluates whether the sequence of cards above the target is playable as a set of sequential moves — which is exactly the backward chain-tracing skill that Klondike expert strategy requires.
Scoring system games improve the resign/continue decision in binary-outcome games. Playing Golf and TriPeaks with score optimisation as the explicit goal — continuing to play for score even when a complete clear is impossible — develops the habit of identifying value in partial progress that binary-outcome players tend to suppress. Applied back to standard solitaire, this habit manifests as more thorough recovery play on difficult deals: instead of resigning a difficult Klondike position at the first stuck point, the player searches for partial uncovering progress that, while not immediately leading to a win, improves the position's future winnability. The scoring game habit of never stopping at a stuck position without first extracting all remaining value directly reduces the premature resignation error that binary-outcome play encourages.
Applying invalidated strategy components without recognising they no longer apply. The most common unusual-rules mistake is applying a strategy component that the unusual rule specifically invalidates. In Yukon, applying the blocking-pattern diagnostic (checking whether a card is accessible) misses the point that Yukon's unrestricted movement eliminates accessibility blocking — the diagnostic should shift to timing and sequencing. In Golf, applying the stock-last principle without recognising that Golf's chain structure makes stock timing a chain-probability evaluation rather than a tableau-exhaustion rule produces systematically suboptimal stock draws. Explicitly identifying which of the four rule components (movement, build, win condition, information) each unusual variant modifies — and which strategy components each modification invalidates — is the correct first step before any strategy transfer.
Missing the unique strategic problem each unusual rule creates. Each unusual rule creates one primary strategic challenge that standard solitaire does not have. Golf's bidirectional build creates the bidirectional scan requirement. Yukon's unrestricted movement creates the unit-evaluation and timing requirement. Scoring systems create the partial-progress evaluation requirement. Deterministic redeal creates the arrangement-calculation requirement. Players who do not identify the unique primary challenge of each unusual rule play the variant with a strategy framework that addresses none of it specifically — which is why unusual-rule win rates often remain far below achievable levels even for experienced standard-game players. Identifying the primary strategic problem of each unusual rule before beginning play focuses the strategy adaptation where it has the most impact.
Under-using the bidirectional scan in Golf and TriPeaks. Because standard solitaire players develop a unidirectional (descending) scan habit from years of Klondike and Spider play, the most common Golf and TriPeaks mistake is systematically missing chain extensions in the upward direction. A player who draws from the stock after exhausting all visible downward chain extensions, without checking upward extensions, will draw more frequently than optimal and achieve lower chain scores than the accessible tableau cards would permit. The correction is explicit: before any stock draw in Golf or TriPeaks, scan the tableau twice — once for rank-below adjacencies, once for rank-above adjacencies — and draw only after both scans return no playable extension.
TriPeaks and Golf Solitaire are the most accessible entry points for unusual-rules play because their chain mechanics and scoring structures are the most clearly different from standard foundation-building play, but their rule complexity is low enough that the unusual elements are immediately identifiable rather than buried in complex multi-rule interactions. A player who develops bidirectional scanning in Golf and score-optimisation habits in TriPeaks gains the two most transferable unusual-rule skills in the shortest learning time. For the complete catalogue of rare variants with unusual rules including Accordion, Sir Tommy, Cruel Patience, and Osmosis, see our rare variants guide. For double-deck variants with unusual positional win conditions including Sultan and Windmill, see our two-decks guide.
The most efficient strategy framework for any unusual-rules variant begins with identifying which of the four standard rule components the variant modifies (movement, build, win condition, information) and which conventional strategy components those modifications invalidate. Retain all strategy components that remain valid; explicitly replace only the invalidated ones with new components designed for the specific unusual rule. In practice: Golf invalidates the unidirectional scan (replace with bidirectional); Yukon invalidates the blocking-pattern accessibility diagnostic (replace with timing and unit-evaluation); scoring games invalidate the binary resign/continue decision (replace with partial-progress score optimisation); deterministic-redeal games invalidate the probabilistic redeal-timing calculation (replace with deterministic arrangement calculation). This targeted replacement framework is more efficient than starting strategy development from scratch for each unusual variant.
Yukon Solitaire has the highest win rate among unusual-rules variants at approximately 55–70%, because its unrestricted sub-stack movement rule eliminates the accessibility-blocking patterns that are the primary difficulty driver in most standard variants. The same deal that would produce an inaccessible blocking pattern in Klondike is often navigable in Yukon simply by moving the blocking stack out of the way — which significantly raises the proportion of deals that skilled players can solve. Among the scoring-system variants, TriPeaks achieves the highest complete-clear rate at approximately 75–85% (though many sessions aim for score rather than complete clear), making it the highest observable win rate in the unusual-rules category.
No. Unusual rules change the structure of the game but do not eliminate the property that some deal distributions produce intrinsically unwinnable configurations. In Yukon, despite the unrestricted movement rule, there are deals where the face-down card arrangements produce circular dependencies that no sequence of moves can resolve. In Accordion, the single-row constraint produces deals where the consolidation chain reaches a dead end long before the 52 cards are reduced to one pile. The three-pattern structural diagnostic — circular dependency, key card burial beyond accessible depth, resource exhaustion — applies in modified form to all unusual-rules variants: the specific patterns look different (Yukon's circular dependencies involve different movement constraints than Klondike's), but the underlying concept of a structural blockage with no legal resolution remains the correct resignation criterion across the full patience family.