'Haaner Chess', 'Alphabetic Chess', 'ABC for white', 'ABC inverse for black'
условия
ABC for white:
White has to choose his move among those with the departure square is the better ranked in the alphabetical order and numerical that is to say a1 a2 a8 b1 b8 h1... h8.
ABC inverse for black:
Black has to choose his move among those with the departure square is the less well ranked in the alphabetical order and numerical that is to say h8 h7 h1 g8 g1 a8... a1.
Alphabetic Chess:
The squares are considered in the order a1, a2…a8, b1…b8, c1 and so on to h8. At each turn, only the unit standing on the square which comes earliest in this order may move. However check and mate are normal.
Очередность полей определяется как a1, a2…a8, b1…b8, c1 итд. до h8. Каждый раз может ходить только фигура, стоящая на поле, которое в данной очередности стоит раньше других. Однако шах и мат происходят по обычным правилам.
Haaner Chess:
After each move, the departure square of the moving unit becomes a ‘hole’ which no unit may be occupy or pass through again.
No. 1690 Sébastien Luce
France
original - 26.02.2022
white Pa2b2c2d2e2f2g2h2 Ra1h1 Sb1g1 Bc1f1 Qd1 Ke1
black Ra8h8 Sb8g8 Bc8f8 Qd8 Ke8 Pa7b7c7d7e7f7g7h7
h==14.5 16+16
Haaner Chess
ABC for white
ABC inverse for black
A kind of PJ where the goal would be a double stalemate ! Two excelsiors to Bishop on opposite corners for black and white are necessary to do it.