Lianliankan (連連看, literally "connect and see") is one of the most enduring casual games in Chinese internet history. Around 2000, the QQ game lobby turned it into a phenomenon — every net café and office computer spent hours of lunch breaks on it. The rule is dead simple: find two identical tiles that can be joined by at most three straight-line segments (two turns), and they disappear.

But a clean, polished Lianliankan in today's browser is harder to find than you'd think — most clones are rough, mobile controls break, and ads take over. MeTool Lianliankan brings back the classic: true three-line rule, three difficulties (8×6 / 10×8 / 12×10), smooth Canvas connection animations, zero ads, full mobile touch support.

The rule "at most two turns, path cannot cross remaining tiles" is simple but hides a tidy little algorithm:

0 turns: Same row or same column with a clear path. The easy pair.

1 turn: Different row and column, but some "pivot" cell makes the path horizontal then vertical (or vice-versa) with both segments clear. The most common case.

2 turns: Needs two pivots to route around obstacles. The tightest case — late-game boards often narrow down to these. When a pair that "looks connectable" refuses to clear, the path is usually blocked by a tile you hadn't noticed, or needs a third bend that exceeds the limit. Clear surrounding tiles first to open up a route, or tap Hint.

Under the hood, MeTool uses a BFS (breadth-first search) on a padded board to enumerate all reachable states within two direction changes, ensuring every genuinely connectable pair is detected with no missed paths.

Instant play: No account or install. Just open and start clearing.

Three difficulties: Easy 8×6 (relaxed), Medium 10×8 (the classic), Hard 12×10 (longer sessions). Tile placement is randomised each game.

Smooth connection animation: Canvas-rendered path with correct corners, and a scale-out fade on removal — faithful to the original feel.

Hint and shuffle: Click Hint to highlight a valid pair; Shuffle re-randomises. The game auto-shuffles dead boards — you'll never get stuck.

Mobile tuned: Tile size and touch target adapt to small screens. Smooth on iOS and Android.

Try these too: Memory Match, Sudoku, 2048.

Lianliankan isn't just a "find the match" casual game — it actually trains the following cognitive abilities:

① Visual search efficiency: Quickly locating matching pairs among a full screen of patterns requires efficient visual scanning strategies. With practice, you evolve from "checking one by one" to "scanning the whole board at a glance" — this visual search efficiency improvement helps in everyday tasks like finding files and reading code.

② Path planning: Finding matching tiles is just the first step — you also need to determine whether a connection path with no more than two turns exists. This requires quickly simulating path directions in your mind, which is essentially spatial reasoning training.

③ Strategic priority judgment: Experts don't clear just any pair they spot — prioritizing "surrounded" tiles opens paths for others. This "what to do first, what to do later" priority judgment is a foundational skill for time management and project management.

④ Balancing relaxation and focus: Lianliankan's pace is neither rushed nor slow. It requires a certain level of attention without causing excessive tension. This state of "moderate cognitive load" is highly effective for relieving work stress and restoring attention.