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Gene!

This game first appeared in the V6N3P32 PPC Journal in August 1979 by John Dearing. Thanks to John wherever he is today!

This program plays the classic game of mastermind on the HP-19C or HP-29C. Note that all digits on a number are different. So, 3333 will never be the answer.

**User Instructions:**

1) Key in program

2) Store seed (0 < seed < 1) STO 6

3) Set display mode - FIX 1

4) Store -94 in R0 - STO 0 <- Important

5) Store 0.1 in R7

6) Generate the four digit number (all digits will be different: GSB 1. Display shows 0.0.

7) Enter a 4 digit guess. and press R/S.

8) Either a clue in the form of A.B will be displayed (with A being the number of digits guess correctly in the right place and B being the number of digits being guessed correctly but in the WRONG place), or the total number of guesses it took for you to find the answer will be displayed as a negative flashing number.

9) If you have not solved it yet, go back to step 7.

10) When you have won the game, press CLX and go back to step 6 to play again.

Line Instruction 01 LBL 1 02 GSB 0 03 STO 1 04 GSB 0 05 STO 2 06 GSB 0 07 STO 3 08 GSB 0 09 STO 4 10 RCL 1 11 X = Y? 12 GTO 1 13 RCL 3 14 X = Y? 15 GTO 1 16 RCL 2 17 RCL 4 18 X = Y? 19 GTO 1 20 0 21 STO 9 22 LBL 2 23 R/S 24 STO 8 25 1 26 STO- 9 27 CLSUM 28 GSB 9 29 GSB 9 30 GSB 9 31 GSB 9 32 4 33 RC. 5 34 X NE Y? 35 GTO 2 36 LBL 3 37 RCL 9 38 PSE 39 GTO 3 40 LBL 9 41 RCL 1 42 RCL 2 43 RCL 3 44 RCL 4 45 STO 1 46 RDN 47 STO 4 48 RDN 49 STO 3 50 RDN 51 STO 2 52 RCL 8 53 RCL 7 54 * 55 ENTER 56 INT 57 STO 8 58 - 59 RCL 7 60 / 61 RCL 1 62 X NE Y? 63 GTO i 64 1 65 ST+. 5 66 RDN 67 RDN 68 RCL 2 69 X NE Y? 70 GTO i 71 RCL 7 72 ST+. 5 73 RDN 74 RDN 75 RCL 3 76 X NE Y? 77 GTO i 78 RCL 7 79 ST+. 5 80 RDN 81 RDN 82 RCL 4 83 X NE Y? 84 RTN 85 RCL 7 86 ST+. 5 87 RTN 88 LBL 0 89 RCL 6 90 TAN-1 91 FRC 92 STO 6 93 RCL 7 94 / 95 INT 96 X = Y? 97 GTO 0 98 RTNThat's all there is to it. Enjoy!

Visitors since 7/20/97