XS Chess

Ser-h=7

XS Chess*

Sol. 1. Kb1 2. a2 3. a1=R (bPa7) 4. a5 5. a4 6. a3 7. a2, Ba3 =

* "In XS Chess [...], when a pawn promotes, a new pawn is entered on the initial pawn square in tne same file, if vacant" ("Chessics", 13, p. 10).