Two In One: Guess That Language - Cops

Question

This cops-and-robbers challenge challenges the Cop to write a non-empty program that, when run, produces some non-empty output in language A, and, when reversed, produces some non-empty output in language B. The program may produce any output to STDERR when run in either language, but may not take input in any way.

The cop should provide the following information:

The forwards program
The output when run in language A
The output when run backwards in language B

Robbers should attempt to find the two languages used

Rules

The criteria for a valid programming language are the same as those of The Programming Language Quiz, Mark II - Cops:
- It has an English Wikipedia article, an esolangs article or a Rosetta Code article at the time this challenge was posted, or is on Try It Online! [or ATO]. Having an interpreter linked in any of these pages makes that interpreter completely legal.
- It must satisfy our rules on what constitutes a programming language.
- It must have a free interpreter (as in beer). Free here means that anyone can use the program without having to pay to do so.
Each answer must run in less than a minute on a reasonable PC.
Different versions of a language count as the same language.
Languages with different flags are valid. However, flags must be revealed to avoid obscure combinations.
Cracking a submission consists of finding any pair of programming languages that work, not just the intended ones.

An answer is safe if it is not cracked until two months after the question is posted.

An answer can not compete one month after this challenge has been posted.

The shortest safe answer by byte count wins.

Example cop post

# ??? and ???, 128 bytes

```
print(1)#.++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
```

Language A expected output: `1`  
Language B expected output: `v`

and, when cracked,

# Python 3 and brainfuck, 128 bytes, cracked by [<user>](<link to robbers post>)

```
print(1)#.++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
```

Language A expected output: `1`  
Language B expected output: `v`

<explanation>

Jonathan Allan · Accepted Answer · 2022-06-06 19:11:57Z

Japt and Seriously, 5 Bytes - Cracked by math junkie.

STINK

Language A expected output: the current date and time on the machine, in its locale formatted like so Sun Jun 05 2022 18:41:48 GMT+0100 (British Summer Time).

this is just the trailing K getting a JavaScript date()

Language B expected output of KNITS:









































































































































































































































































































                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,......................................................................................................................................................................................................000000000000000000000000000111111111111111111111111111111111111111111111111111111111111222222222222222222222222222222222222222222222222222222222222333333333333333333333333333333333333333333333333333333333333444444444444444444444444444444444444444444444444444444444444555555555555555555555555555555555555555555555555555555555555666666666666666666666666666666666666666666666666666666666666777777777777777777777777777777777777777777777777777777777777888888888888888888888888888888888888888888888888888888888888999999999999999999999999999999999999999999999999999999999999GTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTTaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaabbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbdddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeefffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiikkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkkklllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllllmmnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooooopppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppppprrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrsssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssssstttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttttuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuuwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwwy

..that is, in order:

\$298\$ newline characters
\$2278\$ space characters
\$198\$ ,s
\$198\$ .s
\$27\$ 0s
\$60\$ 1s
\$60\$ 2s
\$60\$ 3s
\$60\$ 4s
\$60\$ 5s
\$60\$ 6s
\$60\$ 7s
\$60\$ 8s
\$60\$ 9s
\$1\$ G
\$98\$ Ts
\$591\$ as
\$595\$ bs
\$295\$ ds
\$1289\$ es
\$297\$ fs
\$199\$ hs
\$98\$ is
\$98\$ ks
\$693\$ ls
\$2\$ ms
\$591\$ ns
\$1091\$ os
\$98\$ ps
\$397\$ rs
\$492\$ ss
\$893\$ ts
\$99\$ us
\$296\$ ws
\$1\$ y
\$1\$ newline character.

The N gets us the text of "99 Bottles of Beer", S then sorts the characters.

\$\begingroup\$ cracked \$\endgroup\$
– math junkie
Commented Jun 6, 2022 at 19:02 — math junkie, Commented Jun 6, 2022 at 19:02

lyxal · Accepted Answer · 2022-06-10 23:29:03Z

7

Gol><> and ;#+, 12 bytes, cracked by MathJunkie

push 72;ll-l

Language A expected output: 16

Language B expected output: -1

You got half the intended language pair right. But not the other half.

edited Jun 10, 2022 at 23:29

answered Jun 4, 2022 at 3:06

lyxal

34.3k2 gold badges64 silver badges141 bronze badges

\$\begingroup\$ Cracked \$\endgroup\$
– math junkie
Commented Jun 10, 2022 at 23:13

Add a comment |

whqwert · Accepted Answer · 2022-06-05 16:59:58Z

5

05AB1E and Noether, 5 bytes, cracked by Jonathan Allan

PLACO

Language A (forwards): 2483027905

Language B (backwards): 26

edited Jun 5, 2022 at 16:59

answered Jun 4, 2022 at 20:09

whqwert

2812 silver badges5 bronze badges

\$\begingroup\$ Cracked. \$\endgroup\$
– Jonathan Allan
Commented Jun 5, 2022 at 16:49

Add a comment |

emanresu A · Accepted Answer · 2022-06-04 03:14:24Z

4

Befunge-96 and befunge-97, 8 bytes, Cracked by steffan

_2h2,@#>

Outputs 4 going forwards and 0x00 0x02 bytes going backwards.

Well, that lasted all of five minutes :P

edited Jun 4, 2022 at 3:14

answered Jun 4, 2022 at 3:01

emanresu A

44.2k5 gold badges100 silver badges240 bronze badges

\$\begingroup\$ cracked \$\endgroup\$
– naffetS
Commented Jun 4, 2022 at 3:06

Add a comment |

Chris · Accepted Answer · 2022-08-06 04:05:17Z

Perl 6 and x86-16 (MS-DOS COM), 41 bytes, Safe

say q@if-X	~h	$hL~hCF)o,AF)XD`hBZQ]P ,XQ@

The forward program prints:

if-X	~h	$hL~hCF)o,AF)XD`hBZQ]P ,XQ

Note the trailing newline.

The reverse program prints:

@QX, P]QZBh`DX)FA,o)FCh~Lh@QX, P]QZBh`DX)FA,o)FCh~Lh

One of these languages should be much easier than the other.

The forward program is fairly straightforward. say prints a string followed by a newline, and q is an operator that treats the next character as though it were a quote mark.

The reverse program is an x86-16 MS-DOS COM executable. MS-DOS programs are always loaded at 0x100, and if you disassemble it assuming that, you get the following:

0x100:  40          inc  ax
0x101:  51          push cx
0x102:  58          pop  ax
0x103:  2C 20       sub  al, 0x20
0x105:  50          push ax
0x106:  5D          pop  bp
0x107:  51          push cx
0x108:  5A          pop  dx
0x109:  42          inc  dx
0x10a:  68 60 44    push 0x4460
0x10d:  58          pop  ax
0x10e:  29 46 41    sub  word ptr [bp + 0x41], ax
0x111:  2C 6F       sub  al, 0x6f
0x113:  29 46 43    sub  word ptr [bp + 0x43], ax
0x116:  68 7E 4C    push 0x4c7e
0x119:  68 24 09    push 0x924
0x11c:  68 7E 09    push 0x97e
0x11f:  58          pop  ax
0x120:  2D 66 69    sub  ax, 0x6966
0x123:  40          inc  ax
0x124:  71 20       jno  0x146
0x126:  79 61       jns  0x189

This looks like nonsense! How could it possibly output anything? I wrote the program using only printable characters, which leaves only a handful of instructions available, many of them not useful. In particular, it leaves no instructions that actually output anything. Loops aren't possible either, because loops are just jumps with negative offsets, and no negative numbers can be made from printable characters.

To get around this, the program is self-modifying: the instructions at 0x10e and 0x113 modify the instructions at 0x120 and 0x122 by subtracting off a constant. After these instructions, the modified program disassembles to:

0x100:  40          inc  ax
0x101:  51          push cx
0x102:  58          pop  ax
0x103:  2C 20       sub  al, 0x20
0x105:  50          push ax
0x106:  5D          pop  bp
0x107:  51          push cx
0x108:  5A          pop  dx
0x109:  42          inc  dx
0x10a:  68 60 44    push 0x4460
0x10d:  58          pop  ax
0x10e:  29 46 41    sub  word ptr [bp + 0x41], ax
0x111:  2C 6F       sub  al, 0x6f
0x113:  29 46 43    sub  word ptr [bp + 0x43], ax
0x116:  68 7E 4C    push 0x4c7e
0x119:  68 24 09    push 0x924
0x11c:  68 7E 09    push 0x97e
0x11f:  58          pop  ax
0x120:  CD 21       int  0x21
0x122:  78 FB       js   0x11f
0x124:  71 20       jno  0x146
0x126:  79 61       jns  0x189

The first ten bytes are setting up the registers to their needed values. cx is initially 0x00ff on most versions of MS DOS (including DOSBox, the free interpreter I tested it on), which is used to set bp to 0x00df for addressing purporses. dx is set to 0x100, the start of the string to be output later.

The next twelve bytes modify the loop as described above, using the sub r/m16,r16 form of subtraction. The value of bp is critical to address the memory in the program without using unprintable characters.

The next nine bytes set up the three interrupts to be called (in reverse order). The upper byte sets the command to be run (output to stdout for 0x09 and exit for 0x4c), the lower byte is not important.

The key here is the loop pop ax, int 0x21, js 0x11f, which pops a value of the stack and then makes a 0x21 interrupt. Specifically, it makes the ah=0x09 interrupt (print a $-terminated string starting at dx to stdout) twice and then the ah=0x4c interrupt (exit program).

Finally, the last 5 bytes q yas are never reached and only matter for the forward version of the program.

I tested this program with DOSBox: simply copy the program as an executable (.COM) file into a DOSBox folder and run it. Be careful to preserve the horizontal tab.

Do the languages satisfy the rules on what constitutes a programming language? (So it's not a variant of HQ9+ using $ as the eof character?) — jimmy23013, Commented Jun 6, 2022 at 4:58
@jimmy23013 Yes, they are both definitely programming languages. — Chris, Commented Jun 6, 2022 at 5:03

jimmy23013 · Accepted Answer · 2022-08-08 08:12:56Z

4

Burlesque and Marbelous, 11 bytes, Safe

23 45 67 ++

Forward:

4567
23

Note: It outputs exactly this in the official online interpreter. But it also outputs a few more trailing characters in other interpreters, presumably because of different command line arguments for the different ways handling standard input, which is not supported in the official online interpreter. But I think I don't need to reveal the flags, because this is the only way running the official online interpreter, which is linked from the official website linked from the Esolangs page.

Backward:

vT2

Should be easy because it's obvious how it works in both languages.

edited Aug 8, 2022 at 8:12

answered Jun 5, 2022 at 5:14

jimmy23013

37k6 gold badges77 silver badges148 bronze badges

\$\begingroup\$ How it works forwards: pushes 23 to stack, pushes 45 to stack, pushes 67 to stack, concatenate 45 and 67 via ++, and implicit output. \$\endgroup\$
– Number Basher
Commented Jun 5, 2022 at 6:49
\$\begingroup\$ How it works backwards: ++ does nothing, pushes char with hex unicode 76 to stack, pushes char with hex unicode 54 to stack, pushes char with hex unicode 32 to stack, implicit output (or could the implicit output automatically convert numbers to the corresponding unicode characters? Not sure... These are just my guesses. I'm pretty sure both languages are stack-based. Upvote. \$\endgroup\$
– Number Basher
Commented Jun 5, 2022 at 6:50
\$\begingroup\$ @NobodyNeedsNames Backward is a 2D language with multiple instruction pointers, each having a single integer as the state, not stack based. \$\endgroup\$
– jimmy23013
Commented Aug 8, 2022 at 8:18

Add a comment |

math junkie · Accepted Answer · 2022-06-04 04:57:49Z

3

Pyth and Pip, 6 bytes, cracked by whqwert

h+hTCG

Language A expected output: 156490583352162063278528710879425690470022892627113539022649734
Language B expected output: 98.29704308057353

edited Jun 4, 2022 at 4:57

answered Jun 4, 2022 at 4:33

math junkie

7,2771 gold badge22 silver badges46 bronze badges

\$\begingroup\$ Cracked \$\endgroup\$
– whqwert
Commented Jun 4, 2022 at 4:56

Add a comment |

whqwert · Accepted Answer · 2022-06-04 22:22:32Z

3

StupidStackLanguage and Deadfish~, 12 bytes, cracked by math junkie

ioaddrsirmix

Language A (forwards): -1

Language B (backwards): 2

edited Jun 4, 2022 at 22:22

answered Jun 4, 2022 at 4:00

whqwert

2812 silver badges5 bronze badges

\$\begingroup\$ Cracked \$\endgroup\$
– math junkie
Commented Jun 4, 2022 at 22:20

Add a comment |

Alice F · Accepted Answer · 2022-06-05 09:10:44Z

3

BRASCA and Foo (or others), 2 bytes, cracked by jimmy23013

`"

Language A expected output: "
Language B expected output: `

They both start a string with the first character and implicitly end it (no ending string character), and therefore the other character is printed.

edited Jun 5, 2022 at 9:10

answered Jun 5, 2022 at 8:22

Alice F

3973 silver badges10 bronze badges

\$\begingroup\$ Cracked. \$\endgroup\$
– jimmy23013
Commented Jun 5, 2022 at 8:37

Add a comment |

Number Basher · Accepted Answer · 2022-06-06 05:10:59Z

2

??? and ???, 209 bytes

+++++++++++++++++.++
++++++++++++++++++++
++++++++++++++++++++
++++++++++++++++++++
++++++++++++++++++++
++++++++++++++++++++
++++++++++++++++++++
++++++++++++++++++++
++++++++++++++++++++
:+++++++++++++++++++

Forward: 9

Backward: [

edited Jun 6, 2022 at 5:10

answered Jun 5, 2022 at 4:08

Number Basher

1,5481 gold badge6 silver badges30 bronze badges

Add a comment |

math junkie · Accepted Answer · 2022-06-11 21:21:59Z

2

MarioLANG and brainfuck, 520 bytes, cracked by jimmy23013

...:+
>.>.-
-.---
-.---
-<.--
-->.+
+++-+
<<<.+
->.>+
->.-+
-----
-<.++
+++<+
-.->+
->.++
+++++
+++<-
+.++-
+>.<-
+.---
>.+++
->.<+
-<<<+
-<.>+
->..+
-.+>+
-.>.-
-.---
-.---
-<.--
-->.+
+++<+
-<<.+
->.>+
->.--
----+
-<.++
+++<+
-.->+
->.++
+++++
+++<+
-.+++
->.<+
-.---
>.+++
->.<+
-<<<+
-<.++
>>..+
-.+>+
-.>.-
-.---
-.---
-<.--
-->.+
+++<+
-<<.+
>.>>+
-.---
---<+
-.+++
++<.+
->>.+
+++++
+++++
-<.++
>.<.+
+>.-+
->.--
>]-<+
-<<<+
-<<++
->+++
+++++
>++++
>++++
+++++
+++>+
+++++
+++++
+++>+
+++++
+++++
->[++
+++++
:-++

Forwards: -25

Backwards:

Nobody is Awesome!!!
Nobody is Awesome!!!
Nobody is Awesome!!!

edited Jun 11, 2022 at 21:21

math junkie

7,2771 gold badge22 silver badges46 bronze badges

answered Jun 5, 2022 at 7:27

Number Basher

1,5481 gold badge6 silver badges30 bronze badges

\$\begingroup\$ Is the forward output exactly -25? I found a language that also outputs a preceding null byte. \$\endgroup\$
– jimmy23013
Commented Jun 5, 2022 at 8:48
\$\begingroup\$ @jimmy23013 exactly -25. Though can you state that language? \$\endgroup\$
– Number Basher
Commented Jun 5, 2022 at 11:33
\$\begingroup\$ Ah, I suppose that must be a red herring because it also outputted a trailing space. MarioLANG. Backward is brainfuck. \$\endgroup\$
– jimmy23013
Commented Jun 6, 2022 at 0:27
\$\begingroup\$ Wait, does MarioLANG output the space? hmm... \$\endgroup\$
– Number Basher
Commented Jun 6, 2022 at 0:37
\$\begingroup\$ You cracked it. \$\endgroup\$
– Number Basher
Commented Jun 6, 2022 at 0:37

| Show 1 more comment

asdf3.14159 · Accepted Answer · 2022-08-08 15:05:25Z

2

Javascript and Bash, 193 bytes, cracked by Komali

(![]+[/“¡Ḟọ@⁼ị»/])[!+[...([])]+!+[]]+(!!!!!!![/“¡Ḟọ@⁼ị»/]+[])[+!+[]]+(![]+[])[!+[/“¡Ḟọ@⁼ị»*/]+!+[]]+(![]+[])[+!![]]//# i /''»ị⁼@ọḞ¡“{/ h {"}"/}{/ c ..]][[+][-_;};5$""3$  o3$''1$e {)(..]][[+][-_

Language A expected output: lala

Langauge B expected output: hi

edited Aug 8, 2022 at 15:05

answered Aug 8, 2022 at 14:27

asdf3.14159

2011 silver badge4 bronze badges

\$\begingroup\$ Cracked! \$\endgroup\$
– Komali
Commented Aug 8, 2022 at 14:52

Add a comment |

Aiden Chow · Accepted Answer · 2022-06-07 00:00:59Z

1

Forwards:

"""+!|>1bab@|!+"""1110111p exit;"1" tuO

Backwards:

Out "1";tixe p1110111"""+!|@bab1>|!+"""

Forwards output:

Backwards output:

Shouldn't be too bad.

edited Jun 7, 2022 at 0:00

answered Jun 6, 2022 at 18:21

Aiden Chow

14.2k1 gold badge17 silver badges55 bronze badges

Add a comment |

math junkie · Accepted Answer · 2022-06-11 21:21:05Z

1

TrumpScript and A Pear Tree, 4 bytes, cracked by whqwert

Forwards:

+:
:+
0O

Backwards:

O0
+:
:+

Forwards:

Parsing error:
What are you doing on line 3?

Backwards:

a partridge

Should be quite easy...

edited Jun 11, 2022 at 21:21

math junkie

7,2771 gold badge22 silver badges46 bronze badges

answered Jun 5, 2022 at 3:48

Number Basher

1,5481 gold badge6 silver badges30 bronze badges

\$\begingroup\$ Backwards is A Pear Tree of course but I'm too lazy to go find out the other one \$\endgroup\$
– naffetS
Commented Jun 5, 2022 at 4:00
\$\begingroup\$ Correct, Backwards is a pear tree \$\endgroup\$
– Number Basher
Commented Jun 5, 2022 at 4:06
1

\$\begingroup\$ Cracked \$\endgroup\$
– whqwert
Commented Jun 5, 2022 at 4:08

Add a comment |

cnamejj · Accepted Answer · 2022-08-06 05:14:26Z

0

??? and ???, 9 bytes

ps"x9O@"(

Forwards output: 9

Backwards output: @O9x

answered Aug 6, 2022 at 5:14

cnamejj

2,80910 silver badges11 bronze badges

Add a comment |

Stack Exchange Network

Two In One: Guess That Language - Cops

Rules

Example cop post

15 Answers 15

Japt and Seriously, 5 Bytes - Cracked by math junkie.

Gol><> and ;#+, 12 bytes, cracked by MathJunkie

05AB1E and Noether, 5 bytes, cracked by Jonathan Allan

Befunge-96 and befunge-97, 8 bytes, Cracked by steffan

Perl 6 and x86-16 (MS-DOS COM), 41 bytes, Safe

Burlesque and Marbelous, 11 bytes, Safe

Pyth and Pip, 6 bytes, cracked by whqwert

StupidStackLanguage and Deadfish~, 12 bytes, cracked by math junkie

BRASCA and Foo (or others), 2 bytes, cracked by jimmy23013

??? and ???, 209 bytes

MarioLANG and brainfuck, 520 bytes, cracked by jimmy23013

Javascript and Bash, 193 bytes, cracked by Komali

TrumpScript and A Pear Tree, 4 bytes, cracked by whqwert

??? and ???, 9 bytes

Your Answer

Not the answer you're looking for? Browse other questions tagged
code-golf
source-layout
cops-and-robbers
polyglot
or ask your own question.

Linked

Hot Network Questions

Two In One: Guess That Language - Cops

Rules

Example cop post

15 Answers 15

Japt and Seriously, 5 Bytes - Cracked by math junkie.

Gol><> and ;#+, 12 bytes, cracked by MathJunkie

05AB1E and Noether, 5 bytes, cracked by Jonathan Allan

Befunge-96 and befunge-97, 8 bytes, Cracked by steffan

Perl 6 and x86-16 (MS-DOS COM), 41 bytes, Safe

Burlesque and Marbelous, 11 bytes, Safe

Pyth and Pip, 6 bytes, cracked by whqwert

StupidStackLanguage and Deadfish~, 12 bytes, cracked by math junkie

BRASCA and Foo (or others), 2 bytes, cracked by jimmy23013

??? and ???, 209 bytes

MarioLANG and brainfuck, 520 bytes, cracked by jimmy23013

Javascript and Bash, 193 bytes, cracked by Komali

TrumpScript and A Pear Tree, 4 bytes, cracked by whqwert

??? and ???, 9 bytes

Your Answer

Sign up or log in

Post as a guest

Not the answer you're looking for? Browse other questions tagged code-golfsource-layoutcops-and-robberspolyglot or ask your own question.

Linked

Related

Hot Network Questions

Not the answer you're looking for? Browse other questions tagged
code-golf
source-layout
cops-and-robbers
polyglot
or ask your own question.