The Retrograde Analysis Corner

Die Schwalbe

No. 168, December 1997

9861 - Werner Keym
Die Schwalbe Heft 168, 12/1997
Ded. Josef Haas 75th birthday

[8/pPp1p3/p7/8/1P6/pP6/p1R4P/4K1kr]

6+8. Add (a) wQa1 or (b) wRa1 or (c) wBa1.
In which position is the shortest mate possible?

9862 - Gianni Donati
Die Schwalbe Heft 168, 12/1997

[r3k3/ppp1p3/2p5/6PP/5Ppq/1P4nB/PrP1P1p1/R3K1nb]

10+14. Series-Helpmate in 6 (sh#6) AP

9863 - Gerald Ettl
Die Schwalbe Heft 168, 12/1997

[8/1pp1p1p1/3p4/1P5p/BrP5/1brP1P2/P1pRPP1P/RNknQKnq]

9864 - Johannes Quack
Die Schwalbe Heft 168, 12/1997

[rB2R3/rp6/P7/5P2/1P3pP1/1P1k2NQ/1PN1bPPn/R3KBn1]

9865 - Cuppini
Die Schwalbe Heft 168, 12/1997

[r3kb2/ppRp2p1/2p2p2/8/2N5/1P1P1P2/PrP1P2P/R3Kn2]

11+11. Helpmate in 2 (Duplex)

9866 - Christian Poisson
Die Schwalbe Heft 168, 12/1997

[rnqbkbnr/p1pppppp/8/2p5/8/6P1/PPPPPP1P/RNBQKBNR]

16+16. Proof game in 6.5 moves (Circe Parrain)
(a) Diagram, (b) without Pc5

9867 - Jacques Rotenberg and Wassong Pascal
Die Schwalbe Heft 168, 12/1997

[rnbqkbn1/ppp1ppp1/8/Q7/7r/4PK1N/PPPP1PPP/RNB2B2]

9868 - Leonid Borodatow
Die Schwalbe Heft 168, 12/1997

[3krb1R/PpRPN1p1/1p5N/1R3P1P/8/5QP1/6R1/R1K4B]

15+6. Mate in 2

9869 - Mario Velucchi
Die Schwalbe Heft 168, 12/1997
Ded. Gerd Wilts

[r2rk2n/5pp1/p5p1/PpKp1pP1/8/2p3B1/88]

4+12. Helpmate in 3