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PReDS, cool. But how was it done? Did you manage to run the lower stacks over the top? Because the educational value of just one screenshot is limited.
Setup: giants, logs, dwarves, spears, 1+remaining guys, griffins. All guards, except for the second or third stack, go through the bottom. Then, as someone already wrote, the trick is to fly the griffins behind the lower guards, while keeping the guys on the wait, then the minotaurs, not wanting to take damage from the full stack, go back behind the griffins, and then it depends on the situation.

