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The classic Hex connection game against an AI. You play blue and must link the top edge to the bottom with an unbroken chain of stones; the AI plays red and races to link left to right. There are never any draws — someone always connects first. Beat the AI again and again to build your win streak.
The board is a diamond of hexagons. You are blue, and your two edges are the top and the bottom; the AI is red, and its edges are the left and the right. Tap any empty hexagon to drop one of your stones there, then the AI answers with one of its own.
Your goal is a single unbroken chain of blue hexagons that touches both the top edge and the bottom edge — they connect through any of a hexagon's six neighbours, so chains can wind diagonally. The AI is trying to do the same between left and right, and the two goals cross, so blocking its path and building your own are the same fight.
A quirk of Hex is that the game can never end in a draw: once the board is decided, exactly one player has a winning chain. Win and you immediately start a fresh board with your streak intact; lose a single game and the run is over. Your score is the longest streak of wins you string together — tap New to start a streak over.
Build across the short way, block along the long way. Your goal is top-to-bottom, so every stone should make vertical progress; at the same time, a stone placed across the AI's left-right path both advances you and stalls it. The best moves do both at once.
Learn the bridge. Two of your stones placed a knight's-hop apart, with two empty cells between them, are 'safely connected': if the AI plays one gap you take the other, so the link can't be cut. Stringing bridges lets you span the board fast with gaps the AI can't break.
Watch the AI's longest threat. The red stones are quietly forming a left-right chain; before pushing your own connection, scan for the row where red is nearly through and drop a blue stone right in the gap. One timely block is worth several attacking moves.
Don't crowd your stones. Beginners clump pieces tightly, which wastes moves — connected does not mean adjacent. Spread along bridges and let the empty cells between them do the connecting, so each stone covers more ground.