Start in the bottom left corner and move either up or right, one square at a time, using the numbers and the mathematical signs along the way. What is the largest total you can make?
+
2
−
4
+
2
2
+
2
−
2
+
−
1
+
3
−
3
2
−
3
+
1
−
+
1
−
3
+
2
3
+
3
−
2
+
Note: this puzzle is not interactive, and the numbers cannot be clicked.
Answer
The two sons rowed to safety first, one son rowed back.
I rowed to safety and the other son rowed back to the island.
The two sons rowed to safety first, one son rowed back again.
My wife rowed to safety and the other son rowed back.
Finally, the two sons rowed to safety.
??
Puzzle 199
What are the next three characters in this sequence:
There are two alternate series, starting with the first two numbers, and each formed by doubling the preceding number in its own series and subtracting 2.