Engine Lines Display

The engine lines display shows an evaluation and best line for the top moves found by the engine in the current position. The moves are ordered from best move to worst move, and the maximum number of moves shown is determined by the currently selected number of lines. The order of display of each line is, Analysis Depth, Evaluation, Move, Best Line following move.

The evaluation shown before each line indicates the best material situation that the engine thinks will result from playing the particular move (i.e. the evaluation of the position at the end of the best line shown). The evaluation shown is in pawn units. So for example +1.00 would show the move leads to a position that is 1 pawn ahead for the player playing the move, -1.00 would indicate the move leads to a position that is 1 pawn behind for the person playing the move. +3.40 would show a position where the player to move is up a piece worth of material, plus some extra evaluation attributed to some positional advantage in the current position. By default, evaluations are shown from the player to move's point of view, this means a positive evaluation indicates a move that leads to a position where the player to move is in front, and a negative evaluation indicates a resulting position where the player to move would be behind. Many chess engine interfaces have an alternative form of display where the evaluation is always shown from white's perspective. For example if it was black's turn to move a +1.00 score would not be a 1 pawn advantage to black, but instead a 1 pawn advantage to white, with black being behind. If you'd prefer to use this method of evaluationd display select the 'Evaluation from white's view' option available on the "Chess Engines" tab of your user preferences (not the engine settings page).

Moves that would lead the player to move to be ahead of their opponent are marked green, and moves that would lead the player to be behind are marked red, moves deemed to lead to even or drawn positions are marked blue. Note that 'green' moves are not necessarily 'good' moves, for example if the player is a rook up and a move might lead to being only 1 pawn up, that move will be marked green as the player is still in front, but it would not be a good move.

The list of moves in each engine line will be coloured orange up to the point that they match the line played in the current list. You can click on any move in the best line display and the moves upto and including the clicked on move will be inserted into the move list for the current board.

During analysis, stats on the progress of the engine are displayed above the engine lines. The current time spent analysing the current position is displayed, along with the current move being examined (and the number of this move out of the list of candidate moves for the position). The Nodes show the total number of positions examined, and the Nodes per Second (NPS) shows the number of positions the engine is examining each second. The NPS will vary depending on the speed of your machine, how busy your machine is with other tasks, and the nature of the position being analysed.