Twelvelock achievement in Threes!


You are Duchess of the Twelves!

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How to unlock the Twelvelock achievement

  • SnapDragonSnapDragon1,627,570
    22 Feb 2017 22 Feb 2017 22 Feb 2017
    74 1 79
    Since the well-known Threes solvers don't go for this specialty achievement, I wrote one myself, and uploaded it to my github repository:
    If you're technically oriented you can compile for yourself, but if you're not, the Windows executable should work. It's not the fanciest thing ever, and the win rate is lousy, but at least you can give up after ~150 moves or so, so attempts go pretty quickly.

    From the README:
    This is an ugly but workable program to help people get the Twelvelock achievement in Threes. (It also works for Sixlock.) Its success rate is only about 4%, but even in principle I doubt much more than 10% is possible. The problem is that all you can do is set up seven of the "12"s, waste a few moves, and hope you get lucky with a "+" card spawn for the last "12".

    You should run the program in a folder with twelvelock.txt (a file containing some computed weights for various board features). Hopefully the rest the program is self-explanatory. You just type in whatever info it needs to see the game state, and it tells you what moves to make. You can Undo to the previous board state if you accidentally tell it something wrong. However, if you make a mistake and swipe the wrong Threes direction, you'll have to restart the program. Sorry!

    Starting the program from the beginning of the game guarantees its deck counts will be accurate. The other way to guarantee the deck's state is correct is to start the program after making 12N+3 moves, NOT counting "+" card spawns. If the deck is inaccurate, it's not that big a deal, but it will probably hurt the program's predictions slightly.

    The program tells you how happy it is with the current game state. It's not the most meaningful number in the world, but 50% is average, 30% or under means the current state probably can't be recovered, and 60-70% means you're heading towards a configuration that lets you wait for a lucky "+" spawn to win.

    Note that the algorithm I use will happily try to set up a checkboard of "12"s before ever creating a "96" card, which is kind of pointless (since a "96" is required before "+"s can be "12"s). I could probably have made the heuristics smarter, working in two phases, but oh well. So if you play using the program from the start, you'll probably waste some time making a "12" checkerboard before a "96" is made. But you'll know you have a 4% chance of victory.

    My recommended, more efficient, approach to grind for the achievement is to start a Threes game, then play 12N+3 moves (not counting "+" spawns) yourself until you've created a "96" (or the board starts to slip out of control). At that point, start the program and let it try to set up the "12" checkerboard. If it fails and the pretty "12" pattern starts to disintegrate, you should probably just give up and start again.

    If you're paying attention, you'll probably notice moves at which you're one "+" spawn away from winning. A "+" spawns with a 1/21 chance, and (as long as "96" is the highest card on the board) has a 50-50 shot of being a "12". So unless you're lucky, you'll see these moves a lot. Good luck! :)
    Showing most recent comments. View all comments.
    SeitzzEnded up getting it after a few more hours at it today. Was lucky to get it the first time the + tile spawned with the 7s set up. Thank you so much SnapDragon for this. Finally done with this game for good.
    Posted by Seitzz on 09 May 19 at 22:17
    Gaz NCFCFinally got it after a couple of days effort
    Posted by Gaz NCFC on 21 May 19 at 16:44
    Ms DudetteSo for ones totally inept with computers, let alone actually having one....this game is not completable? Or even able to progress? Why is it even considered an Xbox one game?
    Posted by Ms Dudette on 23 Jul 19 at 03:07
    DrMmmPieThanks for this, got the sixlock on my second attempt, mixed up my right and left redface at some point in my first run, Will go for 12 another day ;-)
    Posted by DrMmmPie on 19 Aug 19 at 18:20
    AKXOneJust got my Twelvelock. Took a fair few attempts but got there in the end. Thank you so much! toast
    Posted by AKXOne on 26 Feb 20 at 23:42
    Mental Knight 5This is amazing, you're the best that I'm aware of.
    Posted by Mental Knight 5 on 19 Apr 20 at 19:35
    UP JohnnyIs it bugged somehow? I got the Twelvelock but no achievement popped.
    Posted by UP Johnny on 17 Sep 20 at 19:50
    UP JohnnyYeah, restarted the console, reinstalled the game, deleted the savegame (locally and online), started from scratch, got the twelvelock again - no achievement. Seems unobtainable to me.
    Posted by UP Johnny on 17 Sep 20 at 23:06
    Sir LagselotThanks Snapdragon for the solver, and everyone else for the explanations. I think i understand how to use the solver and what needs to be done.

    Quick question: should i just try and get a 96 without a solver and then start the twelevelock solver? will this also get me the 3 and the 6 lock? thanks!

    Okay, nvm, the lock achievements are all cumulative. What I'm currently doing is getting to 96, using the twelve lock solver until the 'happiness' falls below 25% and then using the volleo solver. If anyone has any advice, or if I've misunderstood a step, please let me know. Thanks!
    Posted by Sir Lagselot on 30 Dec 20 at 16:12
    Daza110I must have tried this over 50 times! Ive gotten close but never got it! Its so frustrating!
    Posted by Daza110 on 15 Feb 21 at 20:48
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