numbers are \e{not} covered by a single domino. Right-clicking again
removes the line.
+You can also use the cursor keys to move a cursor around the grid.
+When the cursor is half way between two adjacent numbers, pressing
+the return key will place a domino covering those numbers, or
+pressing the space bar will lay a line between the two squares.
+Repeating either action removes the domino or line.
+
(All the actions described in \k{common-actions} are also available.)
\H{dominosa-parameters} \I{parameters, for Dominosa}Dominosa parameters
\cfg{winhelp-topic}{games.unequal}
You have a square grid; each square may contain a digit from 1 to
-the size of the grid, and some squares have greater-than signs between
+the size of the grid, and some squares have clue signs between
them. Your aim is to fully populate the grid with numbers such that:
\b Each row contains only one occurrence of each digit
\b Each column contains only one occurrence of each digit
-\b All the greater-than signs are satisfied.
+\b All the clue signs are satisfied.
+
+There are two modes for this game, \q{Unequal} and \q{Adjacent}.
+
+In \q{Unequal} mode, the clue signs are greater-than symbols indicating one
+square's value is greater than its neighbour's. In this mode not all clues
+may be visible, particularly at higher difficulty levels.
-In \q{Trivial} mode (available via the \q{Custom} game type
-selector), there are no greater-than signs; the puzzle is to solve
-the \i{Latin square} only.
+In \q{Adjacent} mode, the clue signs are bars indicating
+one square's value is numerically adjacent (i.e. one higher or one lower)
+than its neighbour. In this mode all clues are always visible: absence of
+a bar thus means that a square's value is definitely not numerically adjacent
+to that neighbour's.
-At the time of writing, this puzzle is appearing in the Guardian
-weekly under the name \q{\i{Futoshiki}}.
+In \q{Trivial} difficulty level (available via the \q{Custom} game type
+selector), there are no greater-than signs in \q{Unequal} mode; the puzzle is
+to solve the \i{Latin square} only.
+
+At the time of writing, the \q{Unequal} mode of this puzzle is appearing in the
+Guardian weekly under the name \q{\i{Futoshiki}}.
Unequal was contributed to this collection by James Harvey.
These parameters are available from the \q{Custom...} option on the
\q{Type} menu.
+\dt \e{Mode}
+
+\dd Mode of the puzzle (\q{Unequal} or \q{Adjacent})
+
\dt \e{Size (s*s)}
\dd Size of grid.