**How Jasvel verifies Jass rules and scoring** > Learn how Jasvel checks Swiss Jass rules, records regional variants, tests scoring and keeps its reference aligned with the app. Source: https://jasvel.org/about/ [Home](https://jasvel.org/) # How Jasvel checks Jass rules and regional variants Jasvel documents its sources, names regional rules and tests shared values so readers can trace each Jass result from rule to score. Updated 11 August 2026 · Merey Tleugazin ## How is the Jasvel Jass reference assembled? The Jasvel reference assembles Jass rules rule by rule, with each page stating the selected practice and its scope. A page identifies the Swiss source behind a rule where appropriate and marks regional differences instead of hiding them in general wording. Readers can therefore see which rule applies, which recognised forms differ and how each choice affects play. Vast Flow, LLP is the publisher of the reference. The publisher is outside Switzerland, so the pages do not assume that one local practice represents Jass everywhere. The reference names the Swiss sources it follows and identifies variants such as Obenabe, the no-trump arrangement with ace-high order, and Undenufe, the no-trump arrangement with six-high order, whenever those variants affect the rule. A rules page must stand alone. The opening sentences under each question therefore give the operative answer before background or comparison. Swiss German terms remain in Swiss German when they are terms of art. A **Weis** is a declared scoring combination. **Stöck** is the king and Ober of the trump suit in one hand. A **Puur** is the trump jack, and a **Nell** is the trump nine. A **Jasstafel** is a Jass score sheet or scoring board. These glosses help readers outside Switzerland follow the explanation without replacing the terms used in Swiss sources or at the table. The same method applies to game forms. **Schieber**, the partnership form in which players choose the contract through a form of passing, has its own rules rather than serving as a generic name for every four-player Jass game. The [Schieber reference](https://jasvel.org/rules/schieber-jass-rules/) can therefore be read separately from pages about cards, declarations or scoring. Each page distinguishes a rule, an interpretation and a regional practice. A source may support a card order, a scoring value or a declaration procedure. A variant note records a different practice without presenting that practice as an error. The distinction helps readers who learned Jass in different Swiss regions and readers comparing a familiar table with the rules used by the app. Figures follow the same discipline as prose. A figure may use only numbers already stated on the page where the figure appears. The restriction stops a visual example introducing an unstated score, card value or target. The reference does not fill a gap by guessing. The editorial method also separates definitions from instructions. A definition explains what a term means. An instruction explains when a player acts and what result follows. A source note explains why the page uses that wording. Keeping those functions separate makes a rule easier to retrieve, quote and check during a game. The result is a reference that gives a direct answer without pretending that every Swiss table follows identical practice. A reader can learn the selected rule, locate its terms and then inspect the regional qualification that belongs with it. *A chalk Jasstafel counts in rows, not in columns: hundreds on top, fifties in the middle, twenties at the bottom, each written left to right. The fifth stroke is drawn across the four before it — two strokes across for the fifties. Anything the strokes cannot express is a plain number in the lower right, and it may be negative. Free to reuse with a link to this page.* ## How does Jasvel handle regional Jass rules? Jasvel treats regional variation as part of Jass rather than as a defect to remove. Each page names the rule set or Swiss source it follows and identifies recognised forms where they change the result. Readers can distinguish a general principle from a source-specific rule and from a local table practice. Obenabe and Undenufe show why the distinction matters. **Obenabe** uses the ordinary high-card direction in a no-trump contract. **Undenufe** reverses the order so that the lower cards take the leading role. The contracts are therefore not interchangeable names for one arrangement. **Stöck** does not exist in Obenabe or Undenufe, so the reference places that exception beside the Stöck rule rather than allowing a general trump statement to imply that the declaration applies everywhere. Swiss German terms remain visible because translated substitutes can blur a rule. **Weis** means a declared combination that contributes to the score. **Stöck** means the king and Ober of the trump suit in one hand. **Puur** and **Nell** identify specific trump cards. Keeping these terms connects the English explanation with the language used in Swiss rule sources and at the table. A regional note is not a list of every possible house rule. The reference records variants that affect a reader’s understanding of the published rule. The selected practice receives enough detail to apply it, while the page identifies the point at which another recognised practice differs. Comparison remains useful without turning the page into an unranked collection of anecdotes. The source trail forms part of the explanation. Readers checking card order can follow the [card values](https://jasvel.org/rules/card-values/) page and see the values used by the reference. Readers checking a term can use the [Jass glossary](https://jasvel.org/jass-glossary/). Cross-links carry a rule to the page that explains its surrounding system instead of repeating disconnected fragments in several places. The method also prevents quiet standardisation. A reference outside Switzerland cannot assume that a familiar description is the only valid form. Each page states its scope. A rule that varies by contract names the contract. A score that depends on declaration order states that order. A practice belonging to a regional form is identified as regional. This takes more space than choosing one table without comment, but it gives readers a basis for checking the result. The distinction matters in practical play. A player who knows the card order from one regional form may expect the same order under another contract. The page must identify the contract before describing the order. A player who knows Stöck from a trump game may also expect it under a no-trump arrangement. The explicit exception prevents that transfer of habit. The reference therefore serves readers with different backgrounds. A new player can learn the selected rule from the direct explanation. An experienced player can locate the source, compare the variant and decide which table matches the game being played. Neither reader has to treat an unmarked local habit as universal. ## How are Jass scoring rules tested? The rules engine reproduces 281 pinned reference cases. Each case fixes a position and its expected result, allowing changes to the rules to be checked against known behaviour. The cases cover interactions that prose can make easy to misread, including declarations, trick totals, contract differences and the order in which points cross a target. Pinned cases do not replace sources. A source explains the rule, while a pinned case records how that rule behaves in a defined situation. If the engine changes an outcome fixed by a pinned case, the change must be examined rather than accepted as an incidental software update. The scoring checks begin with the pack and the round. Jass uses 36 cards, with 9 cards to each of 4 players and 9 tricks in a round. The cards provide 152 points in the pack. The last trick adds 5, making 157 for the round. A match in which one team takes all 9 tricks adds 100, making 257 for that round. Stöck receives separate tests because the declaration has a defined scoring value and timing. Stöck is the king and Ober of the trump suit in one hand, and it is worth 20 points. The 20 points go to that team regardless of the Weis comparison. Stöck does not exist in Obenabe or Undenufe. The timing test is equally specific. A player declares Stöck while playing the second of the two cards, not the first. If the next player has already covered that card before the declaration is spoken, the 20 points are lost. Partners may not remind each other. A final total cannot prove that the procedure was followed, so the timing belongs in the tested rule rather than in a footnote. The engine also tests target crossings. Practice uses targets of 1000, 1500, 2500 and 3000. The app offers 1000 and 2500. When a round takes a team past the target, points are counted in this order: Weis first, then Stöck, then tricks. A team crossing in an earlier block wins. The order is therefore part of the tested result, not merely a display preference. Consider a round that carries a team past its target through several scoring blocks. The engine does not treat the displayed total as sufficient evidence. It checks Weis, then Stöck, then tricks, and records which team crossed in an earlier block. A result can therefore differ from a calculation that adds the same blocks in another order. A second example concerns Stöck. A player holds the king and Ober of the trump suit but says nothing while playing the first card. The player must declare while playing the second card. If the next player covers that card before the declaration is spoken, the 20 points are lost. The test records the timing, not merely the presence of both cards. The cases help separate a scoring error from a display error. A figure may show a result only if the page has already supplied every number used in the figure. The engine can test exact arrangements internally, but the reference does not expose an unstated value merely to make an example appear complete. *Every round contains exactly **152** card points. The last trick adds **5**, so a complete round is **157**; a team that takes all nine tricks adds **100** more for **257**. If your two columns do not add to 157, something was miscounted. Free to reuse with a link to this page.* ## How do the site and app share Jass values? The Jasvel site and app read the same table of values. The shared table connects explanation with implementation: the page explains what a value means, while the app uses the same value when it calculates a result. One table reduces the risk that a card is described one way and scored another way. The table covers the values required by the reference. The pack contains 152 card points, the last trick adds 5 and a complete match adds 100. Those figures produce 157 for an ordinary round and 257 when one team takes all 9 tricks. Stöck contributes 20 where the trump contract permits it. Obenabe and Undenufe do not include Stöck. A shared value does not erase a rule condition. A value may depend on the contract, the declaration or the scoring order. The site and app must therefore read the same underlying entry while applying the conditions stated on the relevant page. A number without its condition is not a complete rule. Target settings provide a clear example. Practice uses 1000, 1500, 2500 and 3000. The app offers 1000 and 2500. The wider practice and the application settings are therefore described separately. A reader can understand a reference to a target without assuming that every target used in practice appears in the app. The crossing sequence is shared in the same way. If a team goes past its target in a round, Weis is counted first, Stöck second and tricks third. A team crossing in an earlier block wins. The display must follow that order because a final total alone cannot show which team crossed first. A worked score check begins with the 152 card points in the pack. Add 5 for the last trick to reach 157 for the round. If one team takes all 9 tricks, add the 100-point match bonus to reach 257. If Stöck applies, its 20 points belong to the team that declared it, subject to the stated timing and contract conditions. Figures follow an additional editorial rule. A figure may use only numbers already stated on the page. The reader can then check the arithmetic against the prose without needing an unstated table or an implied regional assumption. > **Figure caption:** Shared values connect the explanatory rule, the reference table and the result shown by the app. The [app reference](https://jasvel.org/jasvel-app/) explains the application’s scope and the way its settings relate to the published rules. The app does not replace the source notes on the site. The site remains the place where selected rules, regional variants and definitions are made explicit. The arrangement also makes maintenance controlled. A correction to a value can be checked against the pinned cases and then carried through the shared table. A correction to wording can be made on the page without inventing a second value. The two parts remain connected while each keeps its proper job. ## How can readers check or correct a Jass rule? Readers can check a Jass rule by following its source note, comparing its stated variant and testing the example against the numbers printed on the page. The reference is designed for inspection rather than passive acceptance. An unexplained result is not treated as sufficient merely because a particular table has been selected. A useful check starts with scope. Confirm the contract first: trump, Obenabe or Undenufe. Then check the relevant card order and card values. If a declaration appears, check its definition and timing. If the result concerns the end of a round, check the last-trick points, the complete-match addition and the order in which Weis, Stöck and tricks are counted. Stöck needs a timing check of its own. The king and Ober of the trump suit must be in one hand. The declaration is made while playing the second of those cards. Speaking after the next player has covered that card loses the 20 points, and partners may not remind each other. This is a procedure rule as well as a scoring rule, so a final total cannot prove that the procedure was followed. Readers should also check whether a page describes general practice or an app setting. Targets used in practice include 1000, 1500, 2500 and 3000. The app offers 1000 and 2500. A difference between those lists is not automatically a contradiction. The page may be distinguishing broader game practice from an application setting. A useful report identifies the exact point of disagreement. Send the page concerned, the passage that appears wrong and the Swiss source or regional practice supporting the correction. If the issue concerns a calculation, include the contract, the declarations and the relevant trick result so that the case can be compared with the pinned reference cases. The [contact page](https://jasvel.org/contact/) gives the route for sending a report. A correction is easier to assess when the report separates three matters: a source disagreement, a wording ambiguity and an implementation mismatch. Those categories may require different changes even when they appear in the same passage. > **Figure caption:** A correction follows the rule from source to stated value, tested case and displayed result. The review process does not quietly choose a new regional rule. If a source shows that the published wording is too broad, the page can narrow its scope. If another Swiss practice is established, the page can name the variant. If the app and site disagree with the shared table, the pinned cases can show where the implementation has diverged. For a scoring report, provide a worked sequence rather than only a final total. State the contract, identify any Weis, explain whether Stöck was available and record when the relevant card was played. Then show the trick result and the target-crossing order. That information allows the rule, source and implementation to be checked separately. The method leaves room for correction without making the reference unstable. The current wording states the rule being followed. The source note explains its basis. The regional note preserves a meaningful alternative. The test cases protect the implementation. Reader reports then improve the record through evidence rather than unmarked preference. The short answer Jasvel presents Jass as a documented reference, not as a single regional rule sheet. Swiss sources, named variants, shared values and tested examples show how each rule leads to its score. ## Questions ### Why does the reference name Swiss sources and regional variants? Jass rules vary by contract, source and regional practice. Naming the source and variant shows the scope of a rule instead of presenting one table as universal. Readers can then compare the published practice with the rules they know. ### What does a pinned reference case record? A pinned reference case records a defined position and the result that the rules engine must reproduce. The collection contains 281 cases. The cases help detect changes in implementation without replacing the sources that explain the rules. ### Why is Stöck tested separately from Weis? Stöck has its own definition, value and declaration timing. The 20 points belong to the team regardless of the Weis comparison, and the declaration must be made while playing the second card. Stöck is absent from Obenabe and Undenufe. ### Can a figure introduce a value missing from the prose? No. A figure may use only numbers already stated on the page where the figure appears. Readers should be able to check the figure without inferring an extra value or a hidden regional assumption. ### Why do English explanations retain Swiss German terms? Terms such as Weis, Stöck, Puur and Nell identify rules and cards used in Swiss Jass sources. A short English gloss gives the meaning while preserving the terms used at the table and in the source material. ### How should a reader report a possible scoring error? Send the relevant page, the disputed passage and the source or regional practice supporting the correction through the [contact page](page:contact). For a calculation issue, include the contract, declarations, card timing and trick result so the case can be checked precisely. ## Sources 1. [Schieber-Jass: eine Schritt-für-Schritt-Anleitung](https://jassverzeichnis.ch/schieber) — Schweizer Jassverzeichnis 2. [Schieber Jass](https://www.pagat.com/jass/schieber.html) — pagat.com — John McLeod 3. [Jass-Regeln: Schieber-Jass](https://www.swisslos.ch/de/jass/informationen/jass-regeln/schieber-jass.html) — Swisslos ## A real Schieber table, in your pocket Both decks, every contract, the full written score with Weis and Stöck, and a computer partner that never sees your cards. It plays without a connection, without an account and without advertising. [What the app does](https://jasvel.org/jasvel-app/) App Store · Coming soon Google Play · Coming soon Coming soon to the App Store and Google Play ## Read next - [The Jasvel app](https://jasvel.org/jasvel-app/) This offline Jass app recreates four-handed Schieber with computer opponents, full scoring, both decks and pass-and-play on one device. - [Contact](https://jasvel.org/contact/) Use the published Jasvel contact email for rules corrections, scoreboard reports and questions about the offline app. --- HTML version: https://jasvel.org/about/ Structured data for this site: https://jasvel.org/api/v1/openapi.json · https://jasvel.org/llms.txt Free to quote and reuse with a link back to the source URL above (CC BY 4.0).