Neon Mine (EP)
13 Achievements
PS4
9x9 in < 5 seconds
Win a 9x9 game in kids mode in less than 5 seconds
78.0%
How to unlock the 9x9 in < 5 seconds achievement in Neon Mine - Definitive Guide
Keep replaying if necessary; you should get a board that only needs you to clear one more square after the initial clear. If you're lucky enough, the mines will be on the same side you started.