About the Van't Kruijs Opening course
Play the Van't Kruijs Opening line by line — 4 lines, you take White, and the board answers with the main replies until every line is learned.
Lines are ordered from the shortest sideline to the deepest main line, straight from real master play — no frequency guesswork, no “secret tricks”, just the moves that are actually on the board when the position matters. Your progress is stored on this device.