Place a digit from 1-8 in every cell such that a digit does not appear twice in a row, column, 2x4 box. Cells separated by a single king’s move cannot contain the same digit. The diagram shows a Chess game after 5.0 moves (5 white moves and 5 black moves); draw lines representing each move that has been made up to this point; all lines are straight except any representing a knight's move (which is represented as a single line that moves two orthogonal steps in one direction followed by one step in a perpendicular direction); all lines are considered distinct from each other, even if they share cells with other lines. The lines representing the odd-numbered moves (i.e. each player's 1st, 3rd and 5th moves) are Region Sums Lines ie 2x4 box borders divide a Region Sums Line into segments, whose digits have the same sum. The lines representing even-numbered moves are Renban Lines (ie dgits on a Renban Line form a non-repeating consecutive set). Digits separated by a black dot are in a 1:2 ratio (ie one is double the other); digits separated by a white dot are consecutive.