[Retros] Die Schwalbe Heft 204

[Joost de Heer]

Die Schwalbe Heft 204 (December 2003) arrived in the mail last week. Here are the retro compositions.

12111 - Andrei Kornilov, Andrei Frolkin
3b1KQ1/p1pprp2/4pR1k/5pRq/6PB/4P1pb/2PP1PP1/3S1S2 (13+12)
+---+---+---+---+---+---+---+---+

|   | . |   |*B |   | K | Q | . |

+---+---+---+---+---+---+---+---+

|*P |   |*P |*P |*R |*P | . |   |

+---+---+---+---+---+---+---+---+

|   | . |   | . |*P | R |   |*K |

+---+---+---+---+---+---+---+---+

| . |   | . |   | . |*P | R |*Q |

+---+---+---+---+---+---+---+---+

|   | . |   | . |   | . | P | B |

+---+---+---+---+---+---+---+---+

| . |   | . |   | P |   |*P |*B |

+---+---+---+---+---+---+---+---+

|   | . | P | P |   | P | P | . |

+---+---+---+---+---+---+---+---+

| . |   | . | S | . | S | . |   |

+---+---+---+---+---+---+---+---+
Add a white piece on the h-line
(a) Last move?
(b) Last move by the black king?

12112 - Josef Haas(+), Günther Weeth, Werner Keym
r3k3/pppp2p1/8/4K3/3p4/5P1P/1PPPP1P1/2B2BsR (11+9)
+---+---+---+---+---+---+---+---+

|*R | . |   | . |*K | . |   | . |

+---+---+---+---+---+---+---+---+

|*P |*P |*P |*P | . |   |*P |   |

+---+---+---+---+---+---+---+---+

|   | . |   | . |   | . |   | . |

+---+---+---+---+---+---+---+---+

| . |   | . |   | K |   | . |   |

+---+---+---+---+---+---+---+---+

|   | . |   |*P |   | . |   | . |

+---+---+---+---+---+---+---+---+

| . |   | . |   | . | P | . | P |

+---+---+---+---+---+---+---+---+

|   | P | P | P | P | . | P | . |

+---+---+---+---+---+---+---+---+

| . |   | B |   | . | B |*S | R |

+---+---+---+---+---+---+---+---+
Retract 3 halfmoves (white starts the retraction). Can white prevent black
castling? (Proca retractor)

12113 - Dmitri Baibikov
BBBB4/Rpp1k1pp/BRppp3/Bp6/B7/B7/K7/B7 (12+9)
+---+---+---+---+---+---+---+---+

| B | B | B | B |   | . |   | . |

+---+---+---+---+---+---+---+---+

| R |*P |*P |   |*K |   |*P |*P |

+---+---+---+---+---+---+---+---+

| B | R |*P |*P |*P | . |   | . |

+---+---+---+---+---+---+---+---+

| B |*P | . |   | . |   | . |   |

+---+---+---+---+---+---+---+---+

| B | . |   | . |   | . |   | . |

+---+---+---+---+---+---+---+---+

| B |   | . |   | . |   | . |   |

+---+---+---+---+---+---+---+---+

| K | . |   | . |   | . |   | . |

+---+---+---+---+---+---+---+---+

| B |   | . |   | . |   | . |   |

+---+---+---+---+---+---+---+---+
Which bishops are promoted?

12114 - Jens Guballa
rsb1k3/ppppp2p/5ppb/5sR1/3S3Q/6Pq/PPPPP1B1/RSB2K2 (14+15)
+---+---+---+---+---+---+---+---+

|*R |*S |*B | . |*K | . |   | . |

+---+---+---+---+---+---+---+---+

|*P |*P |*P |*P |*P |   | . |*P |

+---+---+---+---+---+---+---+---+

|   | . |   | . |   |*P |*P |*B |

+---+---+---+---+---+---+---+---+

| . |   | . |   | . |*S | R |   |

+---+---+---+---+---+---+---+---+

|   | . |   | S |   | . |   | Q |

+---+---+---+---+---+---+---+---+

| . |   | . |   | . |   | P |*Q |

+---+---+---+---+---+---+---+---+

| P | P | P | P | P | . | B | . |

+---+---+---+---+---+---+---+---+

| R | S | B |   | . | K | . |   |

+---+---+---+---+---+---+---+---+
SPG 14.5

12115 - Christoph Fieberg
1sB1k1s1/Ppp2p2/4p3/8/4p3/1p6/1P1P1PPR/1bKSrqSR (11+12)
+---+---+---+---+---+---+---+---+

|   |*S | B | . |*K | . |*S | . |

+---+---+---+---+---+---+---+---+

| P |*P |*P |   | . |*P | . |   |

+---+---+---+---+---+---+---+---+

|   | . |   | . |*P | . |   | . |

+---+---+---+---+---+---+---+---+

| . |   | . |   | . |   | . |   |

+---+---+---+---+---+---+---+---+

|   | . |   | . |*P | . |   | . |

+---+---+---+---+---+---+---+---+

| . |*P | . |   | . |   | . |   |

+---+---+---+---+---+---+---+---+

|   | P |   | P |   | P | P | R |

+---+---+---+---+---+---+---+---+

| . |*B | K | S |*R |*Q | S | R |

+---+---+---+---+---+---+---+---+
SPG 19.0

12116 - Reto Aschwanden
3rbs2/1p1q1k2/2p2r1s/2p2p1p/8/p3b1K1/PPPPP1P1/RSBQ1BSR (14+14)
+---+---+---+---+---+---+---+---+

|   | . |   |*R |*B |*S |   | . |

+---+---+---+---+---+---+---+---+

| . |*P | . |*Q | . |*K | . |   |

+---+---+---+---+---+---+---+---+

|   | . |*P | . |   |*R |   |*S |

+---+---+---+---+---+---+---+---+

| . |   |*P |   | . |*P | . |*P |

+---+---+---+---+---+---+---+---+

|   | . |   | . |   | . |   | . |

+---+---+---+---+---+---+---+---+

|*P |   | . |   |*B |   | K |   |

+---+---+---+---+---+---+---+---+

| P | P | P | P | P | . | P | . |

+---+---+---+---+---+---+---+---+

| R | S | B | Q | . | B | S | R |

+---+---+---+---+---+---+---+---+
SPG 19.5

12117 - Wolfgang Dittmann
2kr2b1/p6p/p6P/p6S/p6S/r6P/7P/2ssK3 (6+11)
+---+---+---+---+---+---+---+---+

|   | . |*K |*R |   | . |*B | . |

+---+---+---+---+---+---+---+---+

|*P |   | . |   | . |   | . |*P |

+---+---+---+---+---+---+---+---+

|*P | . |   | . |   | . |   | P |

+---+---+---+---+---+---+---+---+

|*P |   | . |   | . |   | . | S |

+---+---+---+---+---+---+---+---+

|*P | . |   | . |   | . |   | S |

+---+---+---+---+---+---+---+---+

|*R |   | . |   | . |   | . | P |

+---+---+---+---+---+---+---+---+

|   | . |   | . |   | . |   | P |

+---+---+---+---+---+---+---+---+

| . |   |*S |*S | K |   | . |   |

+---+---+---+---+---+---+---+---+
Retract 5 halfmoves for a #1 (Proca retractor, Anticirce)

12118 - Henryk Grudzinsky
8/3pk2p/8/8/8/8/3PK2P/1R6 (4+3)
+---+---+---+---+---+---+---+---+

|   | . |   | . |   | . |   | . |

+---+---+---+---+---+---+---+---+

| . |   | . |*P |*K |   | . |*P |

+---+---+---+---+---+---+---+---+

|   | . |   | . |   | . |   | . |

+---+---+---+---+---+---+---+---+

| . |   | . |   | . |   | . |   |

+---+---+---+---+---+---+---+---+

|   | . |   | . |   | . |   | . |

+---+---+---+---+---+---+---+---+

| . |   | . |   | . |   | . |   |

+---+---+---+---+---+---+---+---+

|   | . |   | P | K | . |   | P |

+---+---+---+---+---+---+---+---+

| . | R | . |   | . |   | . |   |

+---+---+---+---+---+---+---+---+
SPG 14.5 (AntiAndernachChess)

12119 - Ion Mururasu, Vlaicu Crisan
1sbqkbsr/1pppp1pp/8/p7/5K2/8/PPPPPPPP/RSBQ1BSR (16+14)
+---+---+---+---+---+---+---+---+

|   |*S |*B |*Q |*K |*B |*S |*R |

+---+---+---+---+---+---+---+---+

| . |*P |*P |*P |*P |   |*P |*P |

+---+---+---+---+---+---+---+---+

|   | . |   | . |   | . |   | . |

+---+---+---+---+---+---+---+---+

|*P |   | . |   | . |   | . |   |

+---+---+---+---+---+---+---+---+

|   | . |   | . |   | K |   | . |

+---+---+---+---+---+---+---+---+

| . |   | . |   | . |   | . |   |

+---+---+---+---+---+---+---+---+

| P | P | P | P | P | P | P | P |

+---+---+---+---+---+---+---+---+

| R | S | B | Q | . | B | S | R |

+---+---+---+---+---+---+---+---+
SPG 5.5, 2 solutions (EinsteinChess)
(b) +bPf7

12120 - Hauke Reddmann
8/8/8/8/8/8/8/RSBQKBSR (8+0)
+---+---+---+---+---+---+---+---+

|   | . |   | . |   | . |   | . |

+---+---+---+---+---+---+---+---+

| . |   | . |   | . |   | . |   |

+---+---+---+---+---+---+---+---+

|   | . |   | . |   | . |   | . |

+---+---+---+---+---+---+---+---+

| . |   | . |   | . |   | . |   |

+---+---+---+---+---+---+---+---+

|   | . |   | . |   | . |   | . |

+---+---+---+---+---+---+---+---+

| . |   | . |   | . |   | . |   |

+---+---+---+---+---+---+---+---+

|   | . |   | . |   | . |   | . |

+---+---+---+---+---+---+---+---+

| R | S | B | Q | K | B | S | R |

+---+---+---+---+---+---+---+---+
Shortest series-proofgame with an 8-fold cyclical permutation of the pieces?
(I.e. Piece 1 is on the beginsquare of piece 2, ...., piece 8 is on the
beginsquare of piece 1)

AntiAndernachChess: A piece changes colour when moving, and keeps its colour
when capturing

Other fairy conditions are well-known.
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