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Interactive diagrams. (Updated!) Diagrams that interactively show piece moves.[All Comments] [Add Comment or Rating]
💡📝H. G. Muller wrote on Fri, Sep 23, 2016 06:51 PM UTC:

I have added a nice improvement to the ShowMoves(N) function associated with the diagram. Before, this function used to show the moves of the Nth defined piece that was defined, on an empty board. And if you invoked it again for the same piece, it restored the original board position. So that you could attach it with an onclick="ShowMoves(N)" to a HTML element that describes the piece in your submission text, to make clicks on it interactively show the moves.

The new feature works for variants with Shogi-style promotions (i.e. where you defined a non-zero promoOffset P to relate each unpromoted piece N to a unique promoted partner N+P). When you invoke the function a second time with the same N it shows the moves of the promoted piece.  It only reverts to displaying the origial position when invoked a third time. For unpromotable pieces the second invocation already makes the board revert to the original position, as before.

In addition it now always shows the name of the piece it displays the moves of in the message above the board. A good place to see it in action is the Chu Shogi article.