Daily Mahjong Solitaire Challenge
The daily challenge gives every player the same solvable deal for the current UTC date. It is a fair way to compare completion time, hints and consistency without changing the classic rules.
How the daily board works
The date creates a deterministic seed, and that seed creates the board. Opening the challenge again on the same UTC day returns the same arrangement; a new board begins when the UTC date changes.
Build a useful streak
Start by scanning the highest layer and the far left and right edges. Preserve duplicate open tiles when possible, because removing the only accessible copy of a symbol can narrow your choices later. Hints and shuffles remain available when you need them.