Alt text: The draw-by-repetition rule does a good job of keeping players from sliding a tile back and forth repeatedly, but the tiles definitely introduce some weird en passant and castling edge cases.
Alt text: The draw-by-repetition rule does a good job of keeping players from sliding a tile back and forth repeatedly, but the tiles definitely introduce some weird en passant and castling edge cases.
Alternatively you might need to decide between sliding or moving. Often chess requires two turns to take a piece (you move a piece into attack range, opponent has a turn to react, and then you can take the piece). Being able to do two actions at once (slide tile and move a piece on the same turn) would allow you to take pieces that weren’t previously threatened. It would even allow you to position to take the enemy king, where you put him in check by sliding the board and then are able to take him on the following action.