When is the earliest the Mongols could be blunted from invading Poland and Hungary?

Hungarians and poles go on crusade, fight horse cavalry and gain experience with facing armies made up of hore archrs and lancers, then when facing mongols retain formation/dont break rank no matter what keep up that sheildwall like your life depended upon it, focus on combined arms warfare adopting from Byzantine method, while forcing enemy to fight on favourable terrain while having brilliant commanders and then they may and that is a big big big may halt the mongols.

For rus.... genghis khan dies. Mongols dont unite only hope really, or Mongols get bogged down in China and Persia.
 
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