One question set, multiple game modes. Tap any game to see it in action. Not sure which to pick?
Answer to place stones and capture territory.

Pick a tile, answer, hit bonuses and steals.

Battleship. Sink every enemy ship to win.
Pass the potato before the fuse runs out.
Buy low, sell high, before the news breaks.
Take the wages, or take the whole vault.
Answer, then shoot for the top corner
下面哪一个是 Hypothetical Syllogism(假言三段论)的 argument form?
Hypothetical Syllogism 对应的 tautology 是哪一个?
“If it snows, then I will study discrete math. If I study discrete math, I will get an A. Therefore, ______”
Hypothetical Syllogism 在课件中还有另一个名称,是什么?
下面哪一个是 Disjunctive Syllogism(选言三段论)的 argument form?
Disjunctive Syllogism 对应的 tautology 是哪一个?
“I will study discrete math or I will study English literature. I will not study discrete math. Therefore, ______”
在 proof steps 里,Disjunctive Syllogism 也常被写成哪个名称?
已知 p → q,q → r,r → s,用 rules of inference 能 valid 地推出什么?
已知 p ∨ q,并且 p 是 true,能否 valid 地推出 ¬q?
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Keep the tile or give it to a rival team.
Answer correctly to move your piece.
Texas Hold'em. Answer to draw better cards.
Pick a chest. Big bonus, or lose it all.
Catapult a rival castle or repair your own.
Climb the mountain, or push a rival off it.