Various length records or attempts

Ivan Skoba sent me recently two positions of another composer from Zlin, specialized in long moremove helpmates and series helpmates. They both were published in Czech magazine for chess composition Sachova Skladba. It was believed that they could be successful attempts for new length records. I am not an expert in record field, but at least I found his h#29 to have illegal position. Pity, but it can serve as an inspiration for other record hunters. I can say nothing about series helpmate. Perhaps any reader can?
Vladimir Janal
4946 Sachova skladba 67/2000
after ser-h#145 P. Ivanic & A. H. Kniest 1970

1.Kb3 2.c3 3.Kb2 ... 11.Kh4 12.exd4 13.Kh5 ... 16.Kh8 17.Bh7 ... 22.Kxc8 ... 27.Kh8 28.Bg8 ... 43.Kxb5 ... 58.Kh8 59.Bh7 ... 65.Kxb8 ... 71.Kh8 72.Bg8 ... 88.Kxa6 ... 104.Kh8 105.Bh7 ... 112.Kxa8 ... 119.Kh8 120.Bg8 ... 136.Kxc6 137.Kb5 ... 139.cxd4 ... 141.dxc2 142. c1S 143.Sa2 144.Sxb4 ... 146.Kd4 Bb6#

As the 'after' sentence says, it is a kind of prolonging of some known problem, I don't have it. Is it a record in some sense?









ser-h#146 (15+8)
B. Hegermann
Fairy Chess Review 1934

1.Kxh8 Kh1 ... 8.Kxe6 Kg1 ... 12.Kxe4 Kg1 ... 15. Kxb3 Kh1 16.Kxb4 Kg1 17.Kxb5 Kh1 18.Kc4 Kg1 ... 23.b1Q Kh1 24.Qf5 Kg1 25.Qf7 gxf7 26.Kc3 f8Q 27.Kd2 Qc8 28.Ke1 Qc1#

Very well known length record for helpmate in usual legal position that remains unbeaten for 66 years! Already many composers tried their skills and failed...









h#28 (11+7)
Vladimir Janal
5152 Sachova skladba 69/2000
after B. Hegermann, FCR 1934

1.Kxh8 Kh1 ... 9.Ka6 Kh1 10.Ba7 Kg1 11.Kb6 Kh1 12.Kxc6 Kg1 ... 14.Kxe6 Kh1 ... 17.Kxe4 Kg1 ... 18.Kxe4 Kg1 ... 20.Kxc4 Kg1 21.Kd4 Kh1 ... 25.c1Q Kh1 26.Qc4 Kg1 27.Qf7 gxf7 28.Ke4 f8Q 29.Bd4 Qf3#

Although this position has one move longer solution than Hegermann's, it is clearly illegal (promoted Bb6 and there are 8 black pawns on board). But it has also different finale.









h#29 (11+10)

Comments to Juraj Lörinc.
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