Quartz

Retro Problems from Issue 24

532 - Dmitrij Baibikow
Quartz, No. 24 04-06/2004

13+13. Mate in one

[8/1P3p2/6P1/3p1Pp1/4Nprn/1P2P1br/1p1PpnRk/BNb1KQ1B]

533 - Wolfgang Dittmann
Quartz, No. 24, 04-06/2004

12+4. Retract 6 moves, then #1 (Proca Retractor, Anticirce Cheylan)

[3R2R1/3P1P2/8/PP6/kP4K1/Pbp3P1/6Pr/2B5]

534 - Wolfgang Dittmann
Quartz, No. 24 04-06/2004

4+10. Retract 9 moves, then #1 (Proca Retractor, Anticirce Cheylan)

[1r6/5Pp1/k2p1rpb/5B2/8/8/1Pp1p1p1/4K3]

535 - Paul Raican
Quartz, No. 24, 04-06/2004

5+14. Retract 3 moves, then #6 (Proca Retractor, Circe Parrain)

[b1N2rk1/p4pp1/pbPn4/rBN5/nKp5/2p5/1p6/8]

536 - Paul Raican
Quartz, No. 24, 04-06/2004

13+14. Proof game in 27.0 moves

[r1Rqkbnr/1ppppp1p/n4P2/4pN1B/1P4KP/NP2P3/2PP3B/8]

537 - Andrej Frolkin
Quartz, No. 24, 04-06/2004

15+14. Proof game in 19.0 moves (C+)

[Q1R1Q2r/2pq2pp/1p1pbn2/5k2/5p1r/6bN/1PPPP1PP/1NBnKBR1]

Solution