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The conserve species rule was imposed at: 8. e5, black
to move. (in July 2000)
The design origins of the symbols.
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| Kings |
Queens |
Rooks |
Bishops |
Knights |
Pawns |
The symbols represent ecological damage, except for the kings.
The kings are the players as actors. On the one hand, the City of
London, the
largest share-trading centre in the world. And as a comparison,
Dallas oil money. Or you could view them as the senior civil service of London,
and a Texas president. In essence, power.
The pawns are equatorial rainforest and northern acid blighted
forest.
The rook is a rookery. Chosen as a pun, and because the symbol
could be drawn to evoke a castle.
The knight is a bear. The polar bear was left with a tendency
to melt into a white background.
Bishops are whales. The white whale implies a hunted whale.
Finally, the freely moving queens are the raptors, the eagles.
Anyone wishing to suggest alternative images are free to do so. Or send us an
email about your interpretation of the images. Copying of the board (for
non-commercial purposes) is encouraged. We would like to see more eco-boards out
there.
The technical design constraints that evolved were:
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Symbols have ecological significance, except kings represent power.
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Each symbol has two versions, black and white.
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Black and white colours only. Readily printed (possibly on a grey
square).
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Symbols visible against light and dark green backgrounds.
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Size is within 35x35 pixels.
Note that the images, limited to black/white/transparent average
about 170 bytes.
This makes for fast transmission speeds. Netscape requires empty
squares to have
either an 'empty' image or ' '.
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