# Skat Game Value Calculator

> Skat game value from contract, matadors, Hand, Schneider, Schwarz and Ouvert — with overbid check. Works out the value of a Skat game by the International Skat Order: base value of the suit or Grand times the multiplier (matadors with or without, game, Hand, Schneider, announced, Schwarz, announced, Ouvert), or the fixed Null values 23/35/46/59. Enter your bid to see whether the game covers it, the highest bid it covers and — with the declarer’s card points — whether the game is won and what it scores. The Playcards app uses the same engine for its score sheet.

Part of usefulweb.site (https://usefulweb.site/). Part of [Playcards](https://playcards.usefulweb.site/) (ownerApp: playcards). Results are deterministic calculations from the inputs and the listed assumptions; the API returns exactly what the web page shows.

## Use it
- Human interface: https://playcardsskatgamevalue.usefulweb.site/ (interactive tool at https://playcardsskatgamevalue.usefulweb.site/tool)
- JSON API: POST https://playcardsskatgamevalue.usefulweb.site/api/v1/calculate with a JSON object of inputs (schema: https://playcardsskatgamevalue.usefulweb.site/api/v1/tool)
- OpenAPI: https://playcardsskatgamevalue.usefulweb.site/openapi.json
- MCP (Streamable HTTP): https://playcardsskatgamevalue.usefulweb.site/mcp - tool `playcards_skat_game_value`

## Inputs
- game (select): Game
- matadorsWith (select): Matadors
- matadors (integer): Number of matadors - Consecutive top trumps you hold (with) or miss (without), counting the Skat. Grand: at most 4.
- hand (boolean): Hand game (Skat not picked up)
- schneider (boolean): Schneider reached (90+ or 30 or less)
- schneiderAnnounced (boolean): Schneider announced (Hand only)
- schwarz (boolean): Schwarz reached (one side took every trick)
- schwarzAnnounced (boolean): Schwarz announced (Hand only)
- ouvert (boolean): Ouvert (cards open)
- bid (integer): Your bid - 0 = no bid check. Bids are game values from 18 upwards.
- declarerPoints (text): Declarer’s card points incl. Skat (optional) - With points the tool says whether the game is won and what it scores.
- scoring (select): Score sheet

## Method
- Suit games: base value Diamonds 9, Hearts 10, Spades 11, Clubs 12; Grand 24. Multiplier = matadors (with or without) + 1 for the game + 1 each for Hand, Schneider, Schneider announced, Schwarz, Schwarz announced and Ouvert (ISkO 4.1–4.4). Announcing Schwarz implies Schneider announced; Ouvert implies both.
- Null games have fixed values: Null 23, Null Hand 35, Null Ouvert 46, Null Ouvert Hand 59.
- A game whose value is below the bid is lost (overbid); it then counts at least the smallest multiple of its base value that reaches the bid (ISkO 5.6).
- With card points: the declarer wins with 61 or more (Schneider: 90+, an announced Schneider or Schwarz must be reached). Score sheet: won +value, lost −2 × value; Seeger-Fabian adds +50 / −50 and 40 for each defender when the declarer loses (three-player table).