Learn by playing, NOT by letting and engine to figure it out.

[Chessqueen]

Sargon does NOT know the opposition principle
[pgn][Event "Pawns ending"]
[Date "2021.01.09"]
[Round "?"]
[White "Sargon-engine"]
[Black "ChessQueen"]
[Result "1/2-1/2"]
[BlackElo "1900"]
[Time "13:39:43"]
[WhiteElo "1850"]
[TimeControl "900+3"]
[SetUp "1"]
[FEN "8/6p1/3k4/8/3K1PP1/8/8/8 w - - 0 1"]
[Termination "normal"]
[PlyCount "24"]


1. Kc3 Kc5 2. Kd3 Kd5 3. Ke3 Ke6 4. f5+ Ke5 5. Kf3 g6 6. fxg6 Kf6 7. Ke4
Kxg6 8. Kf3 Kg7 9. Ke4 Kf6 10. Kf3 Kg7 11. Ke4 Kg6 12. Kf3 Kg7 {3-fold
repetition} 1/2-1/2[/pgn]

[Chessqueen]

BikJump does NOT recognize the opposition principle either
[pgn][Event "Chess for Android Game"]
[Site "United States"]
[Date "2021.01.09"]
[Round "?"]
[White "BikJump v2.5 (64-bit)"]
[WhiteElo "2125"]
[Black "ChessQueen"]
[BlackElo "1900"]
[Result "1/2-1/2"]
[PlyCount "19"]
[TimeControl "1/15"]
[Device "SM-G955U"]
[Setup "1"]
[FEN "8/6p1/3k4/8/3K1PP1/8/8/8 w - - 0 1"]

1. f5 {[25/38]1291/d6e7} g6
2. fxg6 {[18/28]1291/d6e6} Ke6
3. g7 {[18/28]1291/e6f7} Kf7
4. Ke5 {[22/26]mate:17/f7g7} Kxg7
5. Kf5 {[1/1]mate:16/g7f7} Kf7
6. g5 {[1/1]mate:15/f7e8} Kg7
7. g6 {[1/1]mate:12/g7f8} Kg8
8. Kf6 {[1/2]mate:8/g8f8} Kf8
9. g7+ {[1/1]mate:7/f8e8} Kg8
10. Kg6 1/2-1/2
{draw:stalemate: ½-½}[/pgn]