Pawns can make linear moves and all pieces can jump only orthogonally.
(*) It is mandatory to capture as many pieces (as one multi-jump) as possible.
(**) It is mandatory to capture the maximum possible amount of promoted pieces.
(***) It is mandatory to capture with a promoted piece if possible.
Russian Checkers (Shashki) variant is very similar to International Checkers. The following list contains all differences:
The game is played on 8x8 board with 12 pieces of each player (see the picture).
Pawns move one space diagonally forward only, but can capture diagonally forward or backward. Queens (promoted pieces) move any number of spaces diagonally forward or backward, and can capture any number of spaces diagonally forward or backward as well.
Unlike International Checkers, it is not mandatory to make the longest possible jump.
If a pawn reaches the last row while jumping, it promotes to a queen and continues jumping immediately.