Well, I'm a fan of combination lock decoding. Why? Because it's fun

There are the simple ones like ABUS 145/20 with only true gates, then we have false gates like the ABUS 165/40, Burg Wächter 30/90 and others. Here you need to have more fineness than just applying the regular pull picking methods. The hardest standard lock with false gates is the Abus 145/40 (less prominent feedback when testing the gates). Then we have the category of locks where the feedback is disturbed by anti-pull-picking methods, like Tresor Chain Catena Combo 1385. I could only rarely get into this lock on good days. Then we have locks that are immune like the TOKOZ (
https://youtu.be/Inhc3LUbhFA?t=165) as you cannot tension the locking mechanism. The latter goes in the direction of safe combination locks which are a totally different story

Decoding is like meditation for me - you need to enjoy it, else there is no means in practicing it.
If you're interested, I've a youtube playlist on this topic "Lock Picking - combination locks"
https://www.youtube.com/playlist?list=P ... R6Te1n5M37Cheers,
Michael
Less talented, but patient and persevering.