+++ /dev/null
-p.boxed
- | White plays one move, then black play twice,
- | then white plays three moves...
-
-p.
- At the very first move of the game, white make only one move - as usual.
- However, after that and for all the game, each side must play as many moves
- as the opponent just played plus one.
-
-p.
- If a move gives check, then the sequence stops here, but the opponent can
- still play as many moves as would be theoretically possible.
- Also, if a checkmate or stalemate situation occurs before the maximal number
- of moves are played, the game ends.
- There are no en-passant captures.
-
-figure.diagram-container
- .diagram
- | fen:rnbqk2r/pppp2pp/4p3/8/1b1P4/4pN2/PPP1PPPP/RN1QKB1R:
- figcaption "Mate in 1"
-
-p.
- On the diagram white mates with the sequence of 5 moves c3 Ne5 Qd3 Qf5 Qf7.
- Moves' notation is replaced by ∞ (infinity) when there are four moves
- or more to print.
-
-h3 More information
-
-p
- | You can start from the
- a(href="https://en.wikipedia.org/wiki/Progressive_chess")
- | Wikipedia page
- | , which points to
- a(href="http://users.ics.aalto.fi/tho/chess.html") this page
- | with several commented games.