Here’s a good beginner video with former World Champion Anatoly Karpov and Roman Dzindzichashvili explaining some basic King and Pawn endings, which includes opposition, rule of square, and triangulation:
Here’s a good beginner video with former World Champion Anatoly Karpov and Roman Dzindzichashvili explaining some basic King and Pawn endings, which includes opposition, rule of square, and triangulation: