puzzles: refactor and resync with upstream

This brings puzzles up-to-date with upstream revision
2d333750272c3967cfd5cd3677572cddeaad5932, though certain changes made
by me, including cursor-only Untangle and some compilation fixes
remain. Upstream code has been moved to its separate subdirectory and
future syncs can be done by simply copying over the new sources.

Change-Id: Ia6506ca5f78c3627165ea6791d38db414ace0804

1 files changed, 12 insertions, 0 deletions

diff --git a/apps/plugins/puzzles/src/html/filling.html b/apps/plugins/puzzles/src/html/filling.html
new file mode 100644
index 0000000000..70ce16d4a9
--- /dev/null
+++ b/apps/plugins/puzzles/src/html/filling.html
@@ -0,0 +1,12 @@
+Filling
+<p>
+Write a number in every blank square of the grid. When the grid is
+full, every orthogonally connected group of identical numbers should
+have an area equal to that number: so 1s always appear alone, 2s in
+pairs, and so on.
+<p>
+To place a number, click the mouse in a blank square to select it,
+then type the number you want on the keyboard. You can also drag to
+select multiple squares, and then type a number to place it in all
+of them. To erase numbers, select one or more squares in the same
+way and then press Backspace.