(This was my first java puzzle applet)
solution (spots show how mnay times to click each cell)
This puzzle consists of 27 cells.
When you click on a cell, the six neighboring
cells change colors (cells on the edge have fewer neighbors).
The goal is to change all cells to black.
Each cell can be one of five colors; color will
change in the sequence shown in the diagram in the upper left
corner of the puzzle window. Following the diagram in
clockwise order, a cell will change from orange to yellow,
yellow to blue,
blue to pink, pink to black, and black back to orange.
To change all the cells to black, you'll need to click on just
the right cells. If you think you've made a wrong move,
take back moves by pressing the UNDO button. If you
aren't able to make much progress, get
back to the initial coloring by pressing the START OVER button.
Or, reduce the number of moves needed to solve the
puzzle by typing a smaller number in the PUZZLE MOVES box
before pressing START OVER.
Different puzzles can be selected by name;
Type a name in the PUZZLE NAME field and press the START
button. Random names will be generated for you if
you press the NEXT PUZZLE button instead of START.
The "Group" selection determines whether the solution can
contain the same move more than once. In group 1, all moves
are different. In group 2, at least one move must be made
twice (but none three times). Group 3 requires at least one
triple move, and group 4 a quadruple move.
Use the CLEAR button to clear the puzzle and
then make a few clicks to explore how combinations of clicks
effect their neighborhoods. Hold down the shift key
while you click to reverse a click operation. This will
show you what the puzzle would look like if you needed the
same operations to clear it.
Every possible coloring is solvable (for
example, in 45 moves you can change the upper left cell from
pink to black while returning all other cells to their
original color). Use the SHOW SOLUTION button to see
how many times you'll need to click each cell to change them
all to black. The clicks are shown as black or white
spots within the cells.