- ('Switching', 'Exchange pieces positions'),
- ('Upsidedown', 'Head upside down'),
+ ('Rifle', 'Shoot pieces'),
+ ('Royalrace', 'Kings cross the board'),
+ ('Recycle', 'Reuse pieces'),
+ ('Shatranj', 'Ancient rules'),
+ ('Suction', 'Attract opposite king'),
+ ('Threechecks', 'Give three checks'),
+ ('Upsidedown', 'Board upside down'),