There's also an interesting video by PowerPlayChess here https://www.youtube.com/watch?v=31UzlgNtQYQ https://www.youtube.com/watch?v=31UzlgNtQYQ which covers th

There's also an interesting video by PowerPlayChess here https://www.youtube.com/watch?v=31UzlgNtQYQ https://www.youtube.com/watch?v=31UzlgNtQYQ which covers the games where self capture is allowed. There are some really fascinating tricks that are now possible in that variation.