Weekly Challenge 49: Check The Unmoved Pieces

Entries for Weekly Challenge 49 has closed. Thanks to all users who participated.

The winner is @e-pluszak who won a game of Three-Check Chess against @PS-Greedy-Two-Move with 14 unmoved pieces in just 6 moves (12 ply) in the following game:

Users are still welcome to attempt this challenge and post answers here, but the winner has been fixed. The next challenge can be found here:

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