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WikiCards · Card list · Science cards · Tree spanner
Common card · Science
Tree spanner, a Common card
A tree k-spanner of a graph G is a spanning subtree T of G in which the distance between every pair of vertices is at most k times their distance in G.
- Rarity
- Common
- Domain
- Science
- ATK
- 40
- DEF
- 11
- Power
- 51
- Wikipedia reads a year
- 380
Power 51 (ATK + DEF).
Tree spanner quiz: 3 questions
Three questions on the Tree spanner card, the way WikiCards duels ask them. Pick an answer, the facts are just below.
Which of these cards hits hardest (highest ATK)?
Answer
Tree spanner. Tree spanner 40 · Physis 36 · Henri Alibert 32 · Terra nigra 26 ATK in WikiCards.
Which of these Wikipedia articles is read the most in a year?
Answer
François Labourie. François Labourie 1,300 · Sportbike motorcycle drag racing 1,000 · Physis 590 · Tree spanner 380 Wikipedia reads over a year.
In a duel, each round asks a question like these about the opposing card, with 15 seconds to answer.
The facts on the card
The card carries these facts from its Wikipedia article.
- A tree k-spanner of a graph G is a spanning subtree T of G in which the distance between every pair of vertices is at most k times their distance in G.
Why it is Common
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Tree spanner article was read about 380 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 40 and blocks with 11: each hit it takes is cut by 4 %.
How to get Tree spanner
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
More Science cards
Cards close in power
The cards just above and just below Tree spanner in the power ranking, all domains together.
- Lushan railway stationCommon · Society · ATK 38 DEF 13
- Sarah stationCommon · Society · ATK 38 DEF 13
- Henri AlibertCommon · Arts · ATK 32 DEF 19
- Isaac Meir WeissenbergCommon · Arts · ATK 41 DEF 10
- Matthews IslandCommon · Nature · ATK 33 DEF 18
- Newton W. NuttingCommon · History · ATK 42 DEF 9
Card lists
- Wikipedia quizNew questions every day
- All cards from A to ZEvery card, by name
- Science cards
- Legendary cards
- Tier listS and A tiers by power (ATK + DEF)
Credits
Text : Wikipedia, Tree spanner (revision), CC BY-SA 4.0. Photo : BagLuke, CC0, Wikimedia Commons.
