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 Keycode (Posted on 2007-09-06)
Every day when Frank goes to work, he needs to enter a keycode with six different digits to get into the building. The front door has one keypad style and the back door has a different keypad style. One day, Frank realized that each digit in his keycode was horizontally, vertically or diagonally adjacent to the next digit on both keypads.

If the first digit of Frank's keycode is larger than the last, can you determine his keycode?

```    Front               Back
+---+---+---+   +---+---+---+---+---+
| 1 | 2 | 3 |   | 1 | 2 | 3 | 4 | 5 |
+---+---+---+   +---+---+---+---+---+
| 4 | 5 | 6 |   | 6 | 7 | 8 | 9 | 0 |
+---+---+---+   +---+---+---+---+---+
| 7 | 8 | 9 |
+---+---+---+
| 0 |
+---+
```
Example: 2,6 is a possible part of the keycode but 3,6 and 1,6 are not since those are adjacent on only one keypad.

 See The Solution Submitted by Brian Smith Rating: 3.6250 (8 votes)

 Subject Author Date got it Raymond 2007-09-29 16:31:30 Keycode mark adams 2007-09-17 15:51:26 solution elisha 2007-09-12 17:24:01 Full Solution with explanation Lisa 2007-09-11 05:51:42 re: Solution K Sengupta 2007-09-07 09:40:40 re(3): Solution -- mis read? brianjn 2007-09-07 09:07:05 re(2): Solution -- mis read? Charlie 2007-09-07 08:50:56 re: Solution -- mis read? brianjn 2007-09-07 05:53:18 Solution K Sengupta 2007-09-07 01:17:29 Solution Praneeth 2007-09-07 00:48:39 re(3): Solution found Josie Faulkner 2007-09-06 19:59:29 re(2): Solution found Fernando 2007-09-06 12:36:44 re: Solution found Charlie 2007-09-06 12:01:23 Solution found Keith 2007-09-06 10:49:48

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