3 games · a new board in each every day · no signup
Three endgames from three boards, each a position you are already winning with exactly one move that keeps it. Four is Connect Four: one column wins and a wrong drop is not taken back. Gift is Quarto: place the piece you were handed, then choose the one your opponent has to play. Check is checkers: take every black piece inside three.
None of these is checked against a key. The position is played out against an engine that defends as well as it can, and the round ends when the game does, so a wrong move is not announced while you can still play. The board ranks solvers by how many attempts the solve took, and a replay counts.
The rules are stated on each page and the engine enforces them. The puzzle is reading the position a few moves deep.
All three, every day, no account required.