This is an archived problem from a previous year. Submissions are closed, but you can view the problem and its solution.
It's the final day of this year's Advent of Chess! Every solved problem is given one ticket in the drawing for a chessboard signed by Magnus Carlsen, and we'll draw and contact the winner by the end of the year. Join our Discord channel for information about the drawing.
You can choose to keep your account below. That way you won't need to create a new account next year, and we'll send you an email reminder so you won't miss next year's problems.
But now, the final problem: Black makes 17 moves in a row, then White stalemates in one. Give the whole series of moves. Here's an analysis board.
Good luck, and have a Merry Christmas! 🎅