by Karl Fabel - Part 5
41 - L. Ceriani Fairy Chess Review, 1948
13+14. First move of the Black Queen?
[1b2n2n/1pp2ppR/3p1ppr/7N/5P2/1P3bP1/1PPPPK1P/N1Bkq3]
Solution
42 - L. Ceriani Europe Echecs, 1960 Version
14+8. (RV) Mate in 2
[r3k1N1/p1p3pN/R3P2p/1pP5/B6P/QP6/1PPP4/n3K2R]
43 - L. Ceriani Die Schwalbe, 1969
13+12. Release the position !
[2b5/pp1pp1p1/8/5pP1/1P6/PrP1PP2/npkPKRP1/Q2nRB2]
44 - L. Ceriani La Genesi delle Posizioni, 1961 Ded. T. H. Willcocks
12+14. Release the position !
[1B1NKb2/n1NnpPrp/1PPkPrP1/1pRPppp1/2p4P/3p4/8/8]
45 - L. Ceriani La Genesi delle Posizioni, 1961
16+11. Release the position
[QNk1R1Rn/nNP1Kprp/B1p3p1/1PP5/1p2P1P1/4p1P1/4PP1b/6B1]
46 - B. P. Barnes and M. Lipton Die Schwalbe, 1962
11+14. Mate in 2; (b) Pc2 -> e6
[2b5/bpn1p1p1/p5Qp/rB2B3/3p2qr/P6p/P1P4R/R2NK1kN]
47 - H. A. Adamson Fairy Chess Review, 1938
15+13. Black retracts his last move, then helpmate in 1
[2kr1nRQ/pR1pp1KN/1pp3p1/3N2bq/5PRB/2P1PrP1/3Pp1P1/5B2]
48 - H. A. Adamson Fairy Chess Review, 1949 Ded. T. R. Dawson
15+9. White retracts his last move and mates in 1
[7B/5p2/8/1P6/PPP5/prpPp3/NpBpkPPP/b1Q2RRK]
49 - H. A. Adamson 1st Prize British Chess Problem Society, 1926-27
14+15. Who wins? (b) Pd6 -> d5 & Pe5 -> e6
[8/2p5/3p4/Pp2p1p1/rPP2p1p/brpP2B1/qnBPkPPP/QnK3RR]
50 - H. A. Adamson Fairy Chess Review, 1944
15+14. Mate in 1
[4BBRR/p1pprQNb/1p1PpK1k/1P2p1nr/6pb/4P1P1/2P2PP1/3Nn3]