Outstanding – Chess Viewer Review

Don't listen to the haters. These are the real books put out by Everyman chess. I've stopped buying paper books. This lets you follow the variation out to the end on the play by play board and once the variation is over press 1 button and you are back where the line split to the variation. Flip board to see from white and black. Best app by far for chess books.
Review by Lornadoon on Chess Viewer.