The Two-Line Eval Bar for Chess.com is a Chrome add-on developed by boring person. This free tool is designed for chess enthusiasts who want to follow intense, high-level games with precision.

The eval bar provides a visual representation of the difference between the best and second-best move on any given move. Whether you're watching a live tournament or reviewing a recorded game, this add-on adds a new level of intensity and tension to your chess experience.

Upon loading a webpage, the eval bar automatically reloads and buffers to indicate that it is active. If needed, you can toggle the extension on and off to ensure proper functionality. The bar displays slightly darker or lighter shaded sections depending on which side's turn it is, representing the evaluation difference between the best and second-best move.

The Two-Line Eval Bar is particularly useful for following classical chess, especially in situations where high-level players need to make multiple only-moves consecutively. It may take some time to get used to, but its intuitive design enhances your understanding of the game and strategic decision-making.