Feedback: Cooperative Chess

* [x] Try different card mechanic: a single line of cards, and captures happen at boundary between colours.
* [ ] Try alternative goal and scoring: deal out from 4 (easiest) to 0 (hardest) surviving piece types. Discard any kings or duplicates and replace them. Goal is to completely eliminate all piece types, *except* the kings and survivors, then capture one of the kings. Score is number of cards left in the deck and your hands. Score -1 if you have no card to play and have not completed the game, minus one for each piece type that you have not eliminated, other than kings and designated survivors.
* [ ] Clarify that draw deck is face down.
* [ ] Clarify that players still play Black and White, but the deck of cards is giving them a goal and restricting their captures.
* [ ] List which cards to remove, instead of which cards to include? Describe specialized cards as the default?
* [ ] Clarify which discard pile is which, maybe with a note on the diagram.
* [ ] Clarify that we're talking about king and knight as alternative moves, not following moves.
* [ ] Add reminder in following move, that knight can attack anything, because of noncapturing move.
* [ ] Define double colour match before using the term.
* [ ] "Next captured card" is confusing.
* [ ] List hand cards for second example. (Alternative moves, I think.)
* [ ] Add reminder that you can't capture without a card, so double colour matches are more useful later in the game. Play your partner's colour when neither of you have a discard stack.