New Game: Halma Chess

Corner Chess #47 wasn't that successful, but mixing Halma pieces with Chess pieces was interesting.

Try replacing pawns with checkers that move as in Halma. Probably allow super jumps. Checkers can be captured, but cannot capture.

Win by capturing your opponent's king, or by getting all checkers to the back rank. (If opponent tries to block access to the back rank, you can win when all your checkers are as close to the back rank as the closest empty squares.)

Start by reviewing the earlier Corner Chess #47 issue and the existing chess-game structure. Define how Halma-style checker movement, super jumps, captures, and the two win conditions should work before implementation. Done means the new Halma Chess game follows the agreed rules and can be played to either victory condition.

Written by the indexing model from the issue text.