How to trap the Wither so he doesn't run away. (JAVA VERSION)

Following on from my “3 ways to safely kill the Wither in 1.13 in under 10 seconds”.

Few people were not trapping the Wither reliably, Here is some more information on how to trap the Wither.

Link to video. (Watch this first) https://youtu.be/JdnBZhZMG_c

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Note: This is using Java. Other flavours of Minecraft might not work this way. Check it out in a test world first.

Music Credit: Асим & GaTTi – Best Days (2017)

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