All of chess that fits on one row.
Martin Gardner put this one-row chess game in his Mathematical Games column in Scientific American in July 1980, and asked readers a question: can White force a win?
Thinking ahead means asking: if I go here, what can they do, and then what can I do? This game is so small that the engine has checked every possible path — the game is solved, and White can always win in six moves. Tap a move below to walk down a path and see exactly what the engine sees.