by Karl Fabel - Part 1
11 - M. Myllyniemi Suomen Tehtäväniekat, 1955 1st Prize
6+7. Last 5 single moves?
[6b1/1Q5n/1N1k1P2/1rp5/8/1Kp4B/6p1/4R3]
Solution
12 - J. G. Mauldon British Chess Magazine, 1966 Version
15+10. (RV) Mate in 3
[r3k2r/4B1pR/R3P1Pq/1pPpKpPQ/BrpPN1P1/BP6/8/8]
13 - S. Loyd New York State Chess Assoc., 1894
14+10. Mate in 4
[1b3NrR/P1pp2pK/1p2p1RQ/5pP1/1P3pk1/1P6/2PPP2P/N7]
14 - J. Knöppel Springaren, 1961
10+8. Wh. plays and wins
[8/1p3p2/1P6/1Ppp4/P3p3/RP1n4/pP1P2PP/K2k4]
15 - W. Keym Die Schwalbe, 1969 Ded. K. Fabel
14+12. Mate in 1; (b) with wRd8 instead of wNd8
[qrbN4/rP1P1pp1/pQ1pp3/pPp5/6P1/1P3BB1/3PP2P/R3K1k1]
16 - W. Keym Die Schwalbe, 1971 1st/2nd Prize Ceriani Mem. Tourney
14+13. Mate in less than 1 move
[5r1n/4N1P1/QP1PBb2/1p1p1Kp1/1Pk1P1P1/p1PbpPpq/5n2/N1R5]
16a - W. Keym Die Schwalbe, 1971 1st/2nd Prize Inf. Tourney
12+6. Add both Kings, then mate in less than 1 move
[r6r/P7/1P6/P1P3P1/p1P1q1p1/1P2p1N1/B3N3/R6R]
17 - Dr. Niels Høeg The Problemist, Fairy Chess Supplement, 1930
12+14. Retract 80 single moves so that Wh. may mate in 1
[K1k3b1/Pprrpp2/qQRp1Pp1/bRp2p2/1p6/P7/3PP1PP/5B2]
18 - Dr. Niels Høeg Retrograde Analysis, 1915
16+10. What have been the last moves?
[bN6/pPkR3p/PpPpPP2/8/2KP4/B6B/1q1P2PQ/br1R2Nr]
19 - Dr. Niels Høeg Deutsche Wochenschach, 1907
14+11. (RV) Mate in 3
[r3k2r/4N3/1P2P3/2PpKpPN/2p1p1p1/1PP1n3/2p1P1P1/R2b1B1Q]
20 - Dr. Niels Høeg Die Schwalbe, 1933
10+11. Mate in 3
[r1b1k3/p2p2pp/p1pp2p1/8/5Q2/7P/PPPPP2P/4K2R]