2 The antiking (represented by an upside-down king)
3 must always remain under attack.
4 It can capture pieces of its color.
8 Win by checkmating the king, or anti-mating the antiking
— that is to
9 say, making it unable to move to an attacked square.
12 <p>In Anti-King I,
</p>
14 <li>Pawns are Berolina: they move diagonally and capture vertically.
</li>
16 King and Antiking can play one non-capturing knight move,
17 as long as they never moved earlier.
21 <a href=
"https://www.chessvariants.com/diffobjective.dir/anti-king-chess.html">
25 <p class=
"author">Peter Aronson (
2002).
</p>