HP HP-11C

202 Section 10: Applications Programs
Third move:
2 [ENTER]9 0. No echo.
You’ve narrowed down the submarine’s location to just 2 squares,
those containing an x with no circle.
0123456789
9
8
7
6
5
4
3
2
1
=
NWRAr
OO0
©®
0/1/2/3/4/5/6/7/8/9
Fourth
move:
Diagram
of
3"
move
4 [ENTER]9 [B] 1. Echo.
This eliminates (2, 7) as a submarine location, so you’ve found it.
01123 4/56 7829
9
=
INW
L
OO
N
0O
0/1/2/ 3 456/ 7 89
Diagram of 4" move
Fifth move:
4 [ENTER]9 [A] 0.111
0.11111