The Retrograde Analysis Corner

The Problemist

July 2009

R411 - Dragan Stojnic

The Problemist,July 2009

[r3k1Nr/1p1p1n1N/5R2/7Q/pp1R1p2/P2PpPP1/P1PP1pP1/1Kb5]

14+12. #2

[r3k1Nr/1p1p1n1N/5R2/7Q/pp1R1p2/P2PpPP1/P1PP1pP1/1Kb5]

R412 - Alain Brobecker

The Problemist,July 2009

After L.Ceriani

[R4nkR/1p1ppppp/7p/8/N2P3K/7p/P1PPPP1P/8]

11+10. The position has been shifted on a vertical cylinder. What's the a-file?

[R4nkR/1p1ppppp/7p/8/N2P3K/7p/P1PPPP1P/8]

R413 - Dragan Petrovic

The Problemist,July 2009

[8/p7/pp4P1/1PPk1PPQ/BrqNbKPN/1pPRppnR/2pp3b/4B1nr]

15+16. Circe, how many moves by Sd4 to untie?

(Hints for R413: Begin is -1. Sg2-h4 Sf1*Pg3[-] -2. Sg2-h4 b7-b6 -3. g2-g3 Sg3-f1, and the author's solution needs 267 moves to untie the position).

[8/p7/pp4P1/1PPk1PPQ/BrqNbKPN/1pPRppnR/2pp3b/4B1nr]

F2728c - Paul Raican

The Problemist,July 2009

[rn2k1n1/ppp3p1/3r1p2/3p4/3q1b2/8/PP2PPPP/1NBQKBNR]

13+13. PG 8.0 (Annan)

[rn2k1n1/ppp3p1/3r1p2/3p4/3q1b2/8/PP2PPPP/1NBQKBNR]