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Diagrams generated with Timwi's amazing HexagonyColorer.

Diagrams generated with Timwi's amazing HexagonyColorer.

After writing a brute force script for my Truth Machine answer, I set it to find an error-free 6-byte solution for the cat program as well. Astonishingly, it did find one - yes, exactly one solution in all possible 6-byte Hexagony programs. After the 50 solutions from the truth machine, that was quite surprising. Here is the code:

Diagrams generated with Timwi's amazing HexagonyColorer.

After writing a brute force script for my Truth Machine answer, I set it to find an error-free 6-byte solution for the cat program as well. Astonishingly, it did find one - yes, exactly one solution in all possible 6-byte Hexagony programs. After the 50 solutions from the truth machine, that was quite surprising. Here is the code:

Diagrams generated with Timwi's amazing HexagonyColorer.

The first time (purple path) we pass through ~ it's a no-op. The / reflects the IP into the North-West diagonal. The grey path now reads a character multiplies it's character code by -1. This turns the EOF (-1) into a truthy (positive) value and all valid characters into falsy (non-positive) values. In the case of EOF, the IP takes the red path and the code terminates. In the case of a valid character, the IP takes the green path, where ~ undoes negation and ; prints the character. Repeat.

The first time (purple path) we pass through ~ it's a no-op. The / reflects the IP into the North-West diagonal. The grey path now reads a character and multiplies its character code by -1. This turns the EOF (-1) into a truthy (positive) value and all valid characters into falsy (non-positive) values. In the case of EOF, the IP takes the red path and the code terminates. In the case of a valid character, the IP takes the green path, where ~ undoes negation and ; prints the character. Repeat.