How to Play Connect

Connect is a free online Connect-Four strategy game with a polished mahogany club-room aesthetic. Drop Navy glass tokens into one of seven columns. Tokens fall by gravity and stack from the bottom. Align four tokens in a row — horizontally, vertically, or diagonally — to win the match before the Crimson AI does the same.

The board is seven columns by six rows — forty-two cells, at most twenty-one drops per side. Click or tap anywhere in a column to play there; only the column matters, not how high you click. Number keys 1 through 7 do the same from the keyboard. Hovering a column lights it with an amber underglow and floats a translucent Navy token above it, showing where the piece lands before you commit. A full column stops accepting drops, and if all forty-two cells fill with no line of four the match ends in a stalemate that still pays a small consolation score.

Every drop is answered by the Crimson AI: it pauses for a beat, tints the column it has chosen, then releases. Switch tiers any time with the Easy, Medium and Hard buttons. Easy looks two plies ahead and deliberately throws away roughly two moves in five on a random column. Medium searches four plies and punishes an unanswered three-in-a-row, but walks into deeper traps. Hard searches up to seven plies with alpha-beta pruning and opens from a short book, taking the centre column on a near-empty board. All three run under a fixed thinking budget with iterative deepening, so the AI answers promptly instead of freezing the tab mid-search.

The optional Hint Lens, toggled with the Hint button or H, rings the landing cell of any column that matters on your turn — a win available now, a block you have to make, or an open three you would build — and leaves every other column unmarked. A four-card tutorial runs on your first visit and then stays out of the way. Connect also honours your system's reduced-motion setting: tokens land instantly instead of bouncing and the victory beam skips its animated sweep.

Daily Puzzle and Scoring

The Daily button arms Daily Puzzle mode; press Restart (or R) to deal today's board. Today's UTC date is hashed into a seeded pick from a bank of hand-checked part-played positions where Navy has a forced win, so every player gets the same board on the same day. A banner states how many drops the win should take. Before the board is dealt, the engine plays the intended winning drop on a private copy of the position to confirm the win is really there — never on your board — so a puzzle that ever drifted out of spec falls back to a known-good one. The correct column pays a base score plus a speed bonus that is largest inside ten seconds; completing the forced win adds a further bonus and advances your daily streak. A wrong column ends the puzzle at once with a MISSED result, and only your first attempt of the day is submitted.

Classic scores completed matches. A win starts from a base that doubles from Easy to Medium and doubles again for Hard, adds a speed bonus that is full inside eight total drops and fades to zero by the twentieth, then multiplies by your win streak — ×1.0 on the first win of a run, stepping up through 1.2, 1.44 and 1.728 to a ceiling of ×2.0. A loss scores zero and clears the streak; a stalemate pays the consolation and clears it too. Streaks and bests are tracked separately per difficulty, so a warm-up on Easy never spends the run you built on Hard.

Tips & Strategy

• Own the center column. It participates in more 4-in-a-row windows than any other, which is why Hard grabs it with its first move.
• Watch for forks. Two threats at once leave the AI only one block to make — far more reliable than waiting for a deep search to blunder.
• Block sooner than later. Answer an open three the moment it appears; deferring the block by one turn usually loses the match outright.
• Count the squares underneath. A winning cell high in a column only opens once the cells below it fill; counting those drops tells you who gets there first.
• Never hand over the cell above. Dropping directly beneath a square that completes four for Crimson gifts it the win on the next turn.
• Use the Hint Lens as a training wheel. Green star means the drop wins now, red cross means Crimson wins there next turn, amber triangle means you build an open three. Turn it off once you read those patterns unaided.
• Drill openings with the keyboard. R restarts instantly and D cycles the tier, so you can replay one opening a dozen times; the speed bonus makes a rehearsed win worth points.