Knight outpost. Tasks.
Knight outposts are strong, because pawn saves a knight and, knight constrains opponent's pieces. Knight on fortpost is so strong, that sometimes opponent wants give a rook to get rid of alien knight. But now I'm going to show you 10 positions to get acquainted with outpost deeper.
https://www.chess.com/puzzles/problem/1134040
https://www.chess.com/puzzles/problem/761902
https://www.chess.com/puzzles/problem/612978
https://www.chess.com/puzzles/problem/1100780
https://www.chess.com/puzzles/problem/1189032
https://www.chess.com/puzzles/problem/1099582
https://www.chess.com/puzzles/problem/1038458
https://www.chess.com/puzzles/problem/772718
https://www.chess.com/puzzles/problem/118944
https://www.chess.com/puzzles/problem/1084478
By the way, in match between Stockfish and Leelenstein, Stockfish can made knight outpost but the game will finish draw.
https://www.chess.com/computer-chess-championship#event=ccc1427-stockfish-vs-leelenstein&game=1