No.1687
Chris Feather
(England)
Original Fairy problems
JF-2022-I:
01.01.2022 - 30.06.2022
+/- Russian translation
| conditions | 'Take & Make', 'Circe Equipollents' | условия |
| Circe Equipollents: | After a piece is captured, it is immediately replaced on the square which is the same distance and direction from the square of its capture, as was that square from the square upon which its captor commenced its move. (If Qf7 captures a Pawn on e7, it is reborn on d7, because d7 is a same distance and direction from e7 as e7 is from f7. Similarly, if Qg7 captures a piece on ‘e7’ its rebirth square is ‘c7’). If the rebirth square is occupied the captured piece disappears. Castling with replaced Rook is permitted. Pawns may be reborn on the 1st and 8th ranks. Pawns reborn on the 8th rank are promoted as part of rebirth and the promotion is chosen by the player who makes the capture, i.e., if White captures a black Pawn, and the black Pawn is reborn on the 8th rank, White (not Black) decides what Black’s Pawn will be promoted to. Pawns reborn on the 1st or 8th rank can make only one-square move (for example black Pc8 can play only on c7 or it can capture an enemy units on ‘b7’ or ‘d7’). During the en passant capture, the Pawn is replaced on the rank opposite of the captor. For example, if Black moves c7-c5, White Pawn on ‘b5’ captures en passant, moves to ‘c6’, while the black Pawn is reborn on ‘d6’. | |
| Take & Make: | Having captured, a unit must immediately, as part of its move, play a non-capturing move in imitation of the captured unit from the capture-square. If no such move is available, the capture is illegal. Promotion by capture occurs only when a pawn arrives on the promotion rank as the result of a take&make move. Checks are as in normal chess: after the notional capture of the checked K, the checking unit does not move away from the King's square. | Взяв другую, фигура должно немедленно, как часть хода, сделать ход без взятия, имитируя движение взятой фигуры с поля взятия. Если такой ход невозможен — взятие нелегально. Превращение при взятии происходит тольео в случае, если пешка попадает на линию превращения в результате take&make хода. Шах — как в нормальной игре: после условного взятия находящегося под шахом короля, берущая фигура не уходит с поля короля. |
No. 1687 Chris Feather
England
original - 29.01.2022
white Ke1 Pd4c4 Sh6 Bf8
black Pf3c5h7 Kh8
ser-h#8* 2 solutions 5+4
Take & Make
Circe Equipollents
Take & Make
Circe Equipollents
Solution: (click to show/hide)
1...Bf8-g7 #
1.c5*d4-d5[+wPe4] Bf8-g7#{???} 2.Kh8*g7-a1{!}
1.c5*d4-d5[+wPe4] 2.d5*c4-c5[+wPb4] 3.c5-c4 4.c4-c3 {
} 5.c3-c2 6.c2-c1=B 7.Bc1-b2 8.Bb2-g7 Bf8*g7-a1 # {
[The bPf3 prevents 7.Bcxh6-f7/g8 8.Bd5 exd5-g8=R#???
by allowing 9.Kxg8-g3!]}
(C+ by Popeye 4.87)
The inventor of Take&Make intended that it should take priority over any other fairy condition with which is is combined. Popeye's interpretation can surely be taken as the default version because (unlike certain other programs) it follows the inventor's wish:- the "make" section of a move must be completed before any other condition comes into play. I mention this only because readers unaware of the above have occasionally claimed "cooks" in correct problems!
Just wondering how Chris Feather accesses this site, since apparently he doesn’t like to use use internet ?
Chris Feather uses snail mail to correspond with editors and chess friends.
Thanks Geoff. That doesn’t however answer my question ?
Maybe he gets a printout by post??
Whenever I write to Chris Feather, I tell him about problems of his that have recently been published.
It seems important to mention that the inventor of take&make (Laue) did NOT express priority over ANY other FAIRY condition with which it is combined! He specifically only mentioned check and pawn promotion in this respect (Schwalbe #229). Later (feenschach #233) he himself presented his idea of Circe-t&m (priority Circe) versus t&m-Circe (priority make), and he even appreciated the fact of a different implementation in PopEye and WinChloe of both versions! So there seems actually to be no reason left, why any other fairy condition “must” give in to make’s priority after take.
Apart from my former comment concerning the alleged “priority” issue, there is another issue to be discussed! Even though you see both part-moves of take and make as some kind of “unbreakable entity” (which is definitely not the intention of the inventor, see HIS(!) Circe-take&make vs take&make-Circe), why should this – in addition(!) – change the location of the capture field??? When you write (in standard notation) 1.c×d4-d5[wPe4] this would presume (under Circe Equipollents) that capture took place on d5. But there was no capture on d5, but on d4, the square where the take-move ended by capturing the pawn (if it’s not a captured pawn, then the make-move could possibly lead to so many other squares – this would result in undefined chaos)! Consequently it’s 1.c×d4-d5[wPe3]… Not to mix that up with an e.p.-capture, where (under same conditions), eg 1.e7-e5 d5×e6-e5 e.p.[bPf6]; also here the capture square for any following Circe-“action” (Equipollents) is the square where the captured pawn stands before capture (= end of take-move)!
The same problem is with your 1… Bg7#(?), because the defending reaction could be 2.K×g7-f8[wBf6]; the capture square must be defined by the take-move, not the make-move! So, no matter if it’s [wPe4] or [wPe3] both open the diagonal to a1, but there would be no escape for the bK after 1… Bg7 2.Kxg7-a1??, because the rebirth square of wB would still be f6#, resulting in illegal self-check!
Lots of disagreements… still, your original solution would stand, because the rebirth square of both wP (e4/e3, b4/b3) seem to be irrelevant for this solution. But I would feel there is definitely no justification for transferring the capture square to the end of the make-move…
On further probing this issue the problem seems to be of a different kind as first assumed. At first here it looked like the rebirth square vector from the take-move was attached to the end of the make-move. Now I rather think the whole of the compound move (take AND make) produces the vector here, and such it is attached to the capture square in order to find the rebirth square, once the make-move has been finished. If so, I’d like to figure out if this is the agreed upon conception, even though it seems to conflict with some definitions of Circe Equipollents where only a “capture” move (= equivalent to the take move “only”) seems to define the vector?
And further, following H. Laue’s own idea of Circe-take&make, where after the take-move primarily the Circe rebirth takes place, even before the make-move happened (although PopEye seems to not provide this variant). Would this not contradict the idea of a vector resulting out of the whole compound move from take AND make?
Thanks for your thoughts!