Quantum Chess 2.0.0

Quantum Chess 2: twenty chess variants with the quantum element of the classic game, led by 5D chess with multiverse
time travel. The variants are played on your own device; online play, ratings and the rules engine of classic Quantum
Chess are unchanged.

Added

• Multiverse chess (5D), the quantum version of 5D Chess With Multiverse Time Travel: timelines as rows and time
  as columns; pieces that travel back in time and to other timelines, where a move onto an older board opens a new
  timeline (up to three per player, or four on a laptop: an option); turns with a move on every must-move board of the present, ended by
  Submit turn; every official piece (unicorn, dragon, princess, brawn, common king and royal queen) and 44
  official start positions, Small (5 × 5) by default. Boards are certain and pieces are quantum: ghosts, twins and
  links on every board, the past included. A turn that cannot be finished ends the game as checkmate or stalemate, and a
  move that would strand your own turn asks first.
• Nineteen more chess variants, grouped as in the app:
  • Other dimensions: 3D chess (Raumschach), Tri-Dimensional chess with movable attack boards and 4D chess.
  • Hidden information: Kriegspiel and Fog of war.
  • Different rules: Chess960, Atomic, Crazyhouse, Bughouse, Antichess, King of the Hill, Three-check and Horde.
  • Different boards and more players: Hexagonal chess, Four-player chess and Capablanca chess.
  • Regional relatives: Shogi, Xiangqi and Makruk.
• The quantum rules on every board: split, merge, Measure and ordinary moves; "land = roll, pass = link", drops
  included; kings, pawns and the pieces a variant names always solid; castling and en passant only when they are
  certain; a roll whenever the game would end in some possibilities but not in others; a budget of 8 arrangements per
  side.
• The classic end rules in the two-player variants with a king and one move per turn: capture the king instead of
  check, "your king cannot escape", and the bare-kings and 50-move draws, which wait while a king can be captured for
  certain; a variant with its own goal keeps it.
• Computer player for every variant with three levels (Easy, Normal and Hard), running in your browser and keeping
  the board responsive while it thinks. It plays the quantum moves too: splits that fork, dodge or block, merges that
  capture and measurements that settle a danger. In the hidden-information variants it sees only what its own side
  may see.
• Pass & play for two players, or four in Bughouse and Four-player chess, on one device; against the computer you
  take one seat and the computer plays all the others. In Kriegspiel and Fog of war each player sees only their own
  view: a hand-over screen covers the board between turns, and the whole board is revealed when the game ends.
• Variant screens: Chess variants in the navigation and on the home page, with the catalogue by category and
  your games on this device; a New game dialog for the opponent, level, side and the variant's options; a game screen
  for any board shape with the variant's rules next to the shared quantum rules, pieces in hand, the odds of every roll
  before you confirm, a numbered move list, and undo that never rolls a result again.
• Phones and tablets: large boards zoom with the buttons, a pinch or Ctrl + wheel and pan with a finger; 4D chess,
  Bughouse and 5D chess open on the boards you play, and the move controls stay at the bottom of the screen.
• Languages: the variants are in English, Dutch, German and French, like the rest of the app.

---

All changes since v1.0.3: v1.0.3...v2.0.0 · Full changelog