No.1163 (SL&AB)
Definition: (click to show/hide)
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.
No.1163 Sébastien Luce
France
original – 07.12.2016

Solution: (click to show/hide)

White Kh6 Rg6 Pa7b7f6a5f5g5h5d4
Black Kf8 Pa6c5
ser==22 (10+3)
Alphabetic Chess

1.a7a8=B 2.b7b8=S 3.Ba8d5 4.Sb8c6 5.Sc6d8 6.d4*c5 7.c5c6 {
} 8.c6c7 9.c7c8=Q 10.Qc8*a6 11.Qa6a7 12.a5a6 13.Qa7h7 14.a6a7 {
} 15.a7a8=R 16.Ra8a7 17.Ra7g7 18.Bd5g8 19.Sd8f7 20.Sf7h8 21.f6f7 22.f5f6 {==
(C+ by WinChloe 3.35 & Popeye 4.75)}
The AUWs in sd==n are very rare. This one is the first with orthodox pieces and only one fairy condition.
11.Qa7 is necessary to block the "a" Pawn in a6 so to force 13.Qh7. (Author)


No.1163.1 Sébastien Luce &
Alain Bienabe
France
version of No.1163 – 18.12.2016

Solution: (click to show/hide)

White Kh6 Rg5 Pa7b7c7f6d5h5f4g4
Black Kf8
ser==24 (10+1)
Alphabetic Chess

1.a7a8=S 2.Sa8b6 3.Sb6c8 4.b7b8=Q 5.Qb8b1 6.Qb1h7 7.Sc8d6 {
} 8.c7c8=B 9.Bc8e6 10.Sd6e8 11.d5d6 12.d6d7 13.d7d8=R 14.Rd8d7 {
} 15.Rd7g7 16.Be6g8 17.Se8d6 18.Sd6f7 19.f4f5 20.Sf7h8 21.f6f7 {
} 22.f5f6 23.Rg5g6 24.g4g5 {==
(C+ by WinChloe 3.35 & Popeye 4.75)}
After the publication of diag. 1163 M. Ravishankar proposed a new longer version in 46 moves with interesting play.
sd==46 ABC C?
White : Ke1 Rh1 Pa7b6a2c2e2f2g2h2
Black : Kf8 Pa6e5f5g4
1.a4 2.a5 3.a8=B 4.Bd5 5.b7 6.b8=S 7.Sc6 8.c4 9.c5 10.Sd8 11.c6 12.c7 13.c8=Q 14.Qxa6 15.Qa7 16.a6 17.Qh7 18.a7 19.a8=R 20.Ra7 21.Rg7 22.Bg8 23.Sf7 24.00 25.e4 26.exf5 27.Re1 28.Rxe5 29.Re6 30.Rg6 31.f4 32.f6 33.f5 34.Sh8 35.f7 36.f6 37.Kf2 38.Kg3 39.Kxg4 40.g3 41.Kg5 42.g4 43.Kh6 44.g5 45.h4 46.h5 ==
In the same time Alain Bienabe succeeded to simplify with another (short) version C+ but without any black Pawns and a nice maneuver of white Knight of promotion.
I was glad to see that two composers (at least ?) were interested by my problem, and I am always ready to cosign a better version ! ;) (S.Luce)

Is it worth extending the problem so that the pieces on the g and hfiles move into place at the end?
http://pdb.dieschwalbe.de/search.jsp?expression=PROBID=%27P1328315%27
Dear Geoff,
I had also the idea to make a longer problem, for instance with white Pawn a5 in a2, white Pawn
f6/f5 in f2/f4, white Pawn g5 in g2 and maybe white Rook g6 in a3 (?!) to propose as the key move 1.Ra3g3 but…
…as I tested my problem in 38 mn with Winchloe, I had not the patience to do it with a longer problem, and also there is the question “is it interesting ?”
But if you succeed to test a longer (interesting) version of this problem, I propose you to cosign it ! 🙂
I hope you are fine Geoff, give me some news by mail, you are a friend !
Best
I found a setting which i tried testing with Popeye yesterday. It took hours and hours and finally, I had to come out.
5k2/P7/p4p2/8/8/8/PPP1PPPP/R3K3
Ser==47 Alphabhetic Chess
1.a4 2.Ra3 3.Rg3 4.a5 5.a8=B 6.Bd5 7.b4 8.b5 9.b6 10.b7 11.b8=S 12.Sc6 13.c4 14.c5 15.Sd8 16.c6 17.c7 18.c8=Q 19.Qxa6 20.Qa7 21.a6 22.Qh7 23.a7 24.a8=R 25.Ra7 26.Rg7 27.Bg8 28.Sf7 29. Kd2 30.Ke3 31.Kf3! 32.e4 33.e5 34.exf6 35.Kg4 36.f4 37.f5 38.Sh8 39.f7 40.f6 41.Kh5 42.Rg6 43.g4 44.g5 45.h4 46.Kh6 47.h5==
If sound, it should be interesting because the final position is well covered.
Doesn’t work, after 44. g5 white must play Rh6.
Furthermore, after 40. f6, white must play with Rg3.
Quite right. Further, 9.b5xa6 is also possible. Another version has been sent to Julia for publishing afresh.
I just noticed that wR can move along the rank! Perhaps wK can be shifted to b1 or wR can start from a3 – as the author points out –
with change in stipulation.
Dear M. Ravi Shankar,
your setting is very interesting !
If you have more patience than me to test it, I encourage you to do it (with co signature at the end of course !).
M. Pierre Tritten told me that it is not necessary to have the famous C+ to present a new longer version. I don’t know your opinion about that ? Please inform me if you find new versions :
luceechecs@gmail.com
by the way, I notice that in my original version,
black c5 is probably not necessary: with white Pawn c4 instead of d4 it seems ok ! I have to test it…
C+ in 5 minutes (popeye 4.76 SVN version) with d4 to c5 and ser==21
In my version (See solution to 1163.1), the play up to move No.23 is similar to 1163 which is C+. The position reached after blacks 23rd move is also C+ (Popeye v4.63)
Here is a version of 1163.1.
Remove the rook, add a wP on b5 and shift dpawn to d4. Ser==31
Popeye Windows32Bit v4.63 (512 MB)
1.a7a8=S 2.Sa8b6 3.Sb6c8 4.b5b6 5.b7b8=R 6.b6b7 7.Rb8a8 8.Ra8a5 9.Ra5g5 10.b7b8=Q 11.Qb8b1 12.Qb1h7 13.Sc8d6 14.c7c8=B 15.Bc8e6 16.d4d5 17.Sd6e8 18.d5d6 19.d6d7 20.d7d8=R 21.Rd8d7 22.Rd7g7 23.Be6g8 24.Se8d6 25.Sd6f7 26.f4f5 27.Sf7h8 28.f6f7 29.f5f6 30.Rg5g6 31.g4g5 a=>b
solution finished. Time = 1.510 s
My thanks to Geoff Foster for his response to 1174.
9 white pawns?
oops!I did not notice it. I should have used a chess set!
🙂
Dear Ravi
your version with 9 Pawns interest me !!
I have an idea (for the future) to write an article with the title “OUTLAW!” with interesting but illegal positions !
Could you send me by mail the pos. ?
I invite all composers to send me also their positions in the same style !
Here is my mail :
luceechecs@gmail.com