What is the best next move?

1. Settle an argument

You and a friend disagree about a position from last night's game. Set it up, press analyse, and the engine gives a verdict in seconds. Then play both candidate moves and watch how the evaluation shifts. The loser of the argument usually learns more.

2. Finish what you started

A game was abandoned, the clock ran out, or a book diagram ends with “and White wins” without saying how. Play the position forward with the engine answering for the other side using the Play best move button. You will see the technique, not just the result.

3. Check your calculation

Before looking at the engine, work out your line to the end. Then play it move by move. If the engine agrees with each move, your calculation is sound. If it deviates, stop and understand why before continuing. This is the single most effective use of an engine for improving players.

Every next-move calculator gives you a move. The useful ones also tell you how much it matters. Our panel shows the evaluation next to the move and a plain-language reading of it: “White has a clear advantage”, “the position is balanced”. When the second line is only 0.1 behind the first, the choice is a matter of style. When the second line drops two pawns, you have found the only move.

Look at the lines, not just the first move. The engine's reasoning is in the continuation: the move it expects you to fear, the square it is fighting for, the piece it plans to trade. A move you cannot explain is a move you will not find next time.