ref: 89c438e149a91fffa74b2669f7e0cd05abc3420f
dir: /html/slant.html/
Slant <p> Fill in a diagonal line in every grid square so that there are no loops in the grid, and so that every numbered point has that many lines meeting at it. <p> Left-click in a square to mark it with a <code>\</code>; right-click to mark it with a <code>/</code>. Keep clicking in a square to cycle it between <code>\</code>, <code>/</code> and empty.