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Joined 7 months ago
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Cake day: February 18th, 2026

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  • Yes, this would work — but it comes with a subtle statistical bias: the character ‘W’ ends up underrepresented. With a naïve “avoid COW” approach, only about 25% of the grid will typically be ‘W’.

    A more elegant solution would be:

    • fill the grid completely at random
      • search for every “COW” cluster
        • whenever one is found, copy a random character from one cell in the cluster into another cell of the same cluster
      • Iterate until no “COW” remains

    That keeps the distribution much closer to uniform while still guaranteeing a valid puzzle. Then just insert the single “COW” manually wherever you want the hidden solution to be.

    Julia code example
    s= (320,180)            #size
    m=rand(['C','O','W'],s) #random init
    c=1
    while c>0      #iterate till solved
        c=0
        for i in 1:first(s)
            for j in 1:last(s)
    
                #check for 'COW' in each cluster of 3 and copy a character
                #from a rendom cell to an other random cell of the cluster if found
                
                if i>2 &&  m[i-2:i,j] ==['C','O','W']   #vertical
                    c +=1
                    r =shuffle([1,2])
                    m[i-r[1],j] = m[i-r[2],j]
                end
                if j>2 && m[i,j-2:j]  ==['C','O','W']   #horizontal
                    c +=1
                    r =shuffle([0,1,2])
                    m[i,j-r[1]] = m[i,j-r[2]]
                end
            end
        end
    end
    

    The neat part is that this preserves an almost perfectly balanced character frequency.

    For comparison, the puzzle in the example image seems to contain roughly:

    C: ~260 (~25%) O: ~520 (~50%) W: ~244 (~25%)

    So the original author clearly used a different generation strategy.

    Possibly on purpose: visually, ‘C’ and ‘O’ are much easier to confuse than ‘W’. Reducing the number of 'W’s therefore increases the search difficulty. In that sense, the approach suggested by @Snazz@lemmy.world is probably preferable: keep the distribution mostly balanced, but intentionally bias it just enough to make the puzzle psychologically annoying.

    I wonder if there is a non iterative way to generate this puzzle with a ‘uniform’ character distribution 🤔



  • Next F35-frimware-dump on Piratebay:

      [ RELEASE INFORMATION ]
      -------------------------------------------------------------------
      NAME......: F-35_Series_FW_Utility
      VERSION...: v2.4.0-OPEN
      DATE......: 2026-05-04
      PLATFORM..: Embedded Linux / RTOS
      TYPE......: Firmware Dump & Tools
      SIZE .....: 14.2 GB (840x50MB)
      ORIGIN....: Internal Flash (SPI/NAND)
    
      [ DESCRIPTION ]
      -------------------------------------------------------------------
      This package contains a jailbreaked binary dump of the flight 
      controller. Included are scripts for:
      
      * Hex-signature verification
      * Partition table analysis
      * File system extraction and flashing
      
      [ INSTALLATION / USAGE ]
      -------------------------------------------------------------------
      1. Ensure your Fighter jet is in USB-Debugging mode.
      2. Run 'python3 F35_jailbreak_flash.py --check-signatures'
      3. Take Off
      
      CAUTION: Modifying firmware can result in a bricked device
      or "Fly-Away" scenarios. Use at your own risk.
    
      [ GREETS ]
      -------------------------------------------------------------------
      To the researchers, the tinkerer community, and all those 
      who believe in the right to repair and modify their hardware.
    
      -------------------------------------------------------------------
                 "Information wants to be free."```