It's that time of the year again: https://www.janko.at/Retros/d.php?ff=8/8/8/1BB5/Q1PR1P2/PP1P1NK1/4P2P/5BNR one-sided proof game in 24; hoe many solutions? (C+, thanks again to Andrew Buchanan) Wishing all a healthy and happy 2022, --Noam D. Elkies