S-Chess Club
A hub for discussing S-Chess, a variant created by Yasser Seirawan and Bruce Harper implementing Hawk (B+N) and Elephant (R+N) pieces.
https://en.wikipedia.org/wiki/Seirawan_chess
Learning material
S-chess endings 1 The Elephant by Yasser Seirawan
S-chess endings 2 The Hawk by Yasser Seirawan
S-chess endings 3 The Hawk by Yasser Seirawan
S-chess endings 4 The Elephant by Yasser Seirawan