Four in a Row Game

A strategy game with a real training loop

Four in a Row is simple to understand: players alternate dropping discs into one of seven columns, each disc falling to the lowest open space. The first player to make a horizontal, vertical or diagonal line of four wins. The rules take only a few moments to learn, but the gravity rule makes move order important. A square that looks useful may not be playable until several discs have been placed underneath it, and a move can accidentally give the opponent exactly the support they need for a winning drop.

This version keeps the standard 7×6 board and adds two complementary ways to improve. Vs Computer provides four local AI levels. Tactics removes the distraction of a full game and drops you directly into legal positions where one move has a clear strategic purpose. Pass & Play is also available for two people sharing one phone, tablet or computer.

What the AI levels mean

Every AI level checks immediate wins and immediate forced blocks before doing anything else. Easy then plays with a shallow evaluation and some deliberate variation. Standard searches several plies and is designed for casual practice. Hard searches farther and makes fewer intentional second-choice moves. Expert uses the deepest local search in this release. The site does not call Expert perfect or unbeatable; it is a browser-local alpha-beta search with center preference and four-cell threat evaluation, not an account-backed global engine.

That distinction matters because transparent practice is more useful than inflated claims. If you beat Expert, the result is simply a local win against this engine version. It is not a chess-style rating, a percentile or proof of general strategic ability.

Learn the three tactical priorities

The 120-position tactical bank is generated from legal game states and independently validated. Easy positions contain one immediate winning column. Standard positions contain no immediate win for the player, while the opponent has exactly one winning column next turn, making the block forced. Hard positions contain neither immediate win nor immediate loss, but exactly one move creates at least two separate winning drops for the following turn. That final pattern is a double threat.

The priority order is practical: first ask whether you can win now. If not, ask whether the opponent can win on their next drop. Only after those checks should you spend time on longer plans. A single future threat is usually blockable. Two distinct threats can force the result because the opponent normally has only one move.

Hints and Undo are study tools

In Vs Computer, Undo restores the recent position so you can replay a decision. Hint runs the same local move-ranking logic used by the computer and points to the strongest searched column. Both are intentionally available because the product is meant for learning, not only score chasing. Using either marks the current run Assisted so it cannot be confused with a clean unaided win in local stats.

Tactics also keeps a browser-local failed-position list. If you choose the wrong column, the board stays in place and the position is remembered. Failed Review can then draw from those actual misses instead of pretending to know which patterns are difficult for you.

Keyboard, touch and autosave

On touch devices, tap a numbered column or any board cell in that column. On a keyboard, press 1 through 7 to drop directly, or move the selected column with Left and Right and press Enter or Space. Regular games autosave locally so an interrupted position can be restored in the same browser. No account, server database or paid API is required.

Daily Tactic is separate from Today’s 6

The Daily Four in a Row Tactic selects one validated position from the bank using the calendar date. Everyone on the same date receives the same position, and previous dates can be replayed. The specialist keeps its own local daily history and streak. It never enters the platform’s historical Today’s 6 rotation, so solving it cannot add a seventh Daily Score game or alter the existing six-slot contract.

What to practice next

If full games feel chaotic, start with Easy tactics until immediate wins become automatic, then Standard forced blocks. Hard double-threat positions are the bridge from basic scanning to real planning. When those patterns start to feel familiar, return to Vs Computer and try to notice the same ideas before the engine punishes them. The goal is not to memorize one board; it is to make tactical checking part of every move.