Anti-Circe: After a capture the capturing piece (Ks included) must immediately be removed to its game array square (necessarily vacant, else the capture is illegal). Captures on the rebirth square are allowed. R, B & S go to the square of the same colour as the capture; Ps stay on the file of capture; fairy pieces go to the promotion square of the file of capture.
Isardam: Any move, including capture of the King, is Isardam illegal if a Madrasi-type paralysis would result from it. (Madrasi: Units, other than Kings, are paralysed when they attack each other. Paralysed units cannot move, capture or give check, their only power being that of causing paralysis.)
No.1222Peter Harris South Africa original – 03.06.2017
In fact, in (a) it is double-check (and the Q guards c7).
Interesting and subtle difference between this finale and the similar s# finale with Isardam only (see Turnbull & Emmerson, The Problemist i/97), or, as in this position which cuts the pawns and some of the moves from above:
White Kc5 Qg4
Black Ke6 Qf7
HS#2.5 (a) Isardam (b) Isardam + AntiCirce
(a) 1…Ke5 2.Qd4+ Qf6 3.Kd5+ Qd6#
(b) 1…Qd7 2.Qf4 Qe8 3.Kd6+ Qb8#
peter harris
June 8, 2017 09:04
No Joost and Stephen: in (a) the bK is not checking the wK – for the same reason the wK is not checking the bK.
Stephen Emmerson
June 8, 2017 10:05
Indeed – you’re right! The bK needs to be reborn too. The bK is still necessary to thwart White’s attempts to parry by observing d8 (e.g. Qh5 or Qd2). Apologies to Julia who was right all along!
wK is mated by bQb8 in both solutions!
No, since in a) the black queen doesn’t deliver the check, the black king does.
In fact, in (a) it is double-check (and the Q guards c7).
Interesting and subtle difference between this finale and the similar s# finale with Isardam only (see Turnbull & Emmerson, The Problemist i/97), or, as in this position which cuts the pawns and some of the moves from above:
White Kc5 Qg4
Black Ke6 Qf7
HS#2.5 (a) Isardam (b) Isardam + AntiCirce
(a) 1…Ke5 2.Qd4+ Qf6 3.Kd5+ Qd6#
(b) 1…Qd7 2.Qf4 Qe8 3.Kd6+ Qb8#
No Joost and Stephen: in (a) the bK is not checking the wK – for the same reason the wK is not checking the bK.
Indeed – you’re right! The bK needs to be reborn too. The bK is still necessary to thwart White’s attempts to parry by observing d8 (e.g. Qh5 or Qd2). Apologies to Julia who was right all along!