2. Another Checker Puzzle
The way to place the sixteen pieces so that no three are in a line in any direction, can be seen from [Fig. 13].
3. The Rings Joined
The nine rings can be joined by four lines, as shown in [Fig. 14].
Fig. 14.—The joined rings.
4. The Ten Rows
The complicated geometrical figure shown in [Fig. 15] shows the ten rows formed with nine counters.
5. The Cabalistic Sign
By making the two cuts shown in [Fig. 16], the piece of paper will be divided into four parts that will fit together into a square.