Keep the notification open and click it as soon as Germany changes from Demand Sudetenland to “unknown focus”. It somehow gets lost in the shuffle and they forget about it 😂
Need intel over 70% so you can see GER focus. Have to skip a focus sometime early ‘38 and you’ll then have a 10 day head start on Germany. Choose protect Czech once Germany starts demand Sudetenland. Make sure you’ve integrated the railroads, have a non aggression pact use (diplomacy pressure for this, and do it before you take restore A-H bc then you’ll have too many claims), and have world tension over 20%, justify on Yugo you’ll need it anyway, or USA if it’s not rising fast enough. Over 90%+ chance of annex with these conditions.