What are the attacks that are critical for the Axis to win on round 1? Attacks where you might have 90% odds or more in your favor, but if it goes bad - then it goes very very bad.
My theory is that the larger the possible loss, the greater should be your odds of success. For instance, when planning a defense of the German capital against an Allied assault - even if I’m hard up for troops - I like to reduce their chance of victory to 2-3% (so if they are willing to take a 40% chance of losing a lot of planes, and thus giving me a serious advantage, in exchange for a 2-3% chance of winning the game - that is a fair trade.)
Germany 1
Z12
If you attack Z12 with 2 fig and a sub, you should kill at least the destroyer. However there is a 3% chance that you kill nobody and lose a sub and fighter. This just happened to me. Then UK gets decent odds on an attack on the Italian fleet (55%), and if it doesn’t kill it outright, it can get it next round by purchasing three bombers. My opponent did this and all of the Italian and german fleet was removed from the Mediterranean on round 1 for the price of a single bomber (and the des and cru which normally would have died in G1). This is a net loss of 58 IPCs and makes it very hard to win.
Prevention: don’t attack Z2. Focus more on Z12.
I’m not sure if any other battles are so significant. Egypt might be the most important land battle if you try it on G1, but so long as you have your fleet still alive you can retry it on G2 or the Italians can do it. Typically land battles are small and not so influential.
Japan 1
PHI
If PHI holds then the US can attack Z50 with a bomber from WUS and a fighter from HAW. This can destroy the Japanese fleet (if you have a typical bat or bat/des and 2 tra) - knocking out two transports.
Prevention: attack PHI with at least 3 inf, 1 art. However that will still cause this to happen 7% of the time which might be too often.
Z53
If you don’t attack the Battleship it can cause trouble. Especially if your attack on PHI fails and then Z50 can get attacked by fig, bom, and battleship. You can try blocking the battleship with a carrier in Z51 - but that will just get killed and if you built two transports then you need at least one carrier with fighters in Z62.
This happened to me too!