Retro: 1.Kc1-d1[+UUd7]# DAg7×UUe7 2.06h7-h1[+UUe7]+ Gg1×UUe1
3.Kb1-c1[+UUe1]+ g2×UUf1=L+ 4.Ka1-b1[+UUf1]+ f2×UUg1=G
5.06h1-h7[+UUg1]+ DAg5×UUg7 6.Ka2-a1[+UUg7]+ Ge4×UUg6
7.Ka3-a2[+UUg6]+ DAg3×UUg5 8.Ka4-a3[+UUg5]+ h5×UUg4
9.Ka5-a6[+UUg4]+ DAg1×UUg3 10.Ka6-a5[+UUg3]+ h3×UUg2
11.Ka7-a6[+UUg2]+ h2×UUg1=DA[+Lb8] 12.Kb6×La7[+UUg1]+
e3×UUf2[+La7]+ 13.Kc5×Lb6[+UUf2]+ d4×UUe3[+Lb6]+
14.Kb4×Lc5[+UUe3]+ g5×UUf4[+Lc5]+ 15.Ka3×Lb4[+UUf4]+
h6×UUg5[+Lb4] 16.Kb3×La3[+UUg5]+ Kg4×UUf5 (16...Kg6×UUf5?
17.Ka2-b3[+UUf5] Kg7×UUg6[+La3]+ 18.Ka1×La2[+UUg6]+ Kf7×UUg7
19.Kb1-a1[+UUg7] Kg7×UUf7 20.Ka1-b1[+UUf7] and perpetual motion;
16...Kg6×UUf5[+Gc4]? 17.Kc4×Gb3[+UUf5]+ Gb1×UUe4+
18.Kd5-c4[+UUe4]+ e4×UUd3 19.Ke5-d5[+UUd3]+ b4×UUc3
20.Kf4-e5[+UUc3]+ a5×UUb4 21.Kg3-f4[+UUb4] b6×UUa5[+Ph4]+
22.Kf2×Pg3[+UUa5] c7×UUb6[+Pg3]+ 23.Ke1×Pf2[+UUb6]+ and illegal
check) 17.Ka4-b3[+UUf5]+ Kg3×UUg4[+La3]+ 18.Ka5×La4[+UUg4]+
Kg2×UUg3[+La4]+ 19.Ka6×La5[+UUg3]+ Kg1×UUg2[+La5]+
20.Ka7×La6[+UUg2]+ Kf2×UUg1 21.Kb6-a7[+UUg1]+
(21.Kb6×Ra7[+UUg1]+? – illegal, since bRa7 later attacks square a2)
21...Ke2×UUf2[+La6]+ 22.Kc6×Lb6[+UUf2]+ Kd2×UUe2[+Lb6]+
23.Kd6×Lc6[+UUe2]+ Kc2×UUd2[+Lc6]+ 24.Ke6×Ld6[+UUd2]+
Kb2×UUc2[+Ld6]+ 25.Kf6×Le6[+UUc2]+ Ka2×UUb2[+Le6]+
26.Kg6×Lf6[+UUb2]+ Kb3×UUa2 27.Kf5-g6[+UUa2]+ Kb4×UUb3[+Lf6]+
28.Kf4×Lf5[+UUb3]+ Kb5×UUb4[+Lf5]+ 29.Kf3×Lf4[+UUb4]+
Kb6×UUb5[+Lf4]+ 30.Kf2×Lf3[+UUb5]+ (wK visited a2, b6, f2, g6)
30...Kb7×UUb6[+Lf3]+ 31.Kf1×Lf2[+UUb6]+ Kc7×UUb7
32.Ke1-f1[+UUb7]+ and further 32...Kd7×UUc7 33.Kd1-e1[+UUc7]+
Ke7×UUd7 34.Kc1-d1[+UUd7]+ Kf7×UUe7 35.Kb1-c1[+UUe7]+
Kg6×UUf7 (and bK(!) visited a2, b6, f2, g6) 36.Ka2-b1[+UUf7]+
Kg5×UUg6 37.Ka3-a2[+UUg6]+ Kg4×UUg5 38.Ka4-a3[+UUg5]+
Kg3×UUg4 39.Ka5-a4[+UUg4]+ Kh3×UUg3[+Bh3]
40.UUh1×Pg3[+06h1]+ f4×06g3 etc.
