Definitions: (click to show/hide)
Maximummer: Black must play the geometrically longest move or may choose from among longest moves of equal length, distances being measured from the center of each square. Diagonal and oblique distances are measured from the orthogonal coordinates by using Pythagora’s theorem (take the square root of the sum of the squares of the orthogonal distances). All other orthodox chess rules apply.
KoKo: A move is possible only if the piece moved arrives on a square next to another unit.
Lion(LI): Moves along Queen lines over another unit of either color to any square beyond that unit. A capture may be made on arrival, but the hurdle is not affected.
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No.998 Anatoly Stepochkin
Russia
original – 31.01.2016
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Solutions: (click to show/hide)
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white Kd6 Pf7
black Ke8 Ra8 LIa4
s#6 (2+3)
b) LIa4→d1 ; c) LIa4→h7 ;
d) LIa4→a1 ; e) LIa4→f5
Maximummer
KoKo
Lion a4
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a)
1.Kd6-e6 ! zugzwang.
1...0-0-0
2.Ke6-e7 zugzwang.
2...Rd8-g8
3.f7-f8=LI zugzwang.
3...Kc8-d7 +
4.LIf8-a3 zugzwang.
4...LIa4-a2
5.Ke7-e6 zugzwang.
5...LIa2-f7 +
6.Ke6-d6
6...Rg8-g6 #
b) bLIa4-->d1
1.f7-f8=B ! zugzwang.
1...LId1-d8
2.Bf8-e7 zugzwang.
2...LId8-d5
3.Kd6-c6 zugzwang.
3...0-0-0
4.Kc6-b7 +
4...Rd8-f8{(d6)}
5.Kb7-b8 zugzwang.
5...Rf8-f6
6.Kb8-c7
6...Rf6-b6 #
c) bLIa4-->h7
1.f7-f8=S ! zugzwang.
1...0-0-0
2.Sf8-d7 zugzwang.
2...LIh7-b7
3.Kd6-c6 zugzwang.
3...LIb7-e7
4.Sd7-f8 zugzwang.
4...Rd8-d5
5.Kc6-c7 zugzwang.
5...Kc8-b7
6.Kc7-b8
6...Rd5-d8 #
d) bLIa4-->a1
1.f7-f8=R ! zugzwang.
1...Ra8-a2
2.Rf8-f7 zugzwang.
2...LIa1-a3
3.Rf7-d7 zugzwang.
3...LIa3-f8
4.Kd6-c7 zugzwang.
4...LIf8-b8
5.Rd7-d6 zugzwang.
5...Ra2-a8
6.Kc7-d8
6...LIb8-e5 #
e) bLIa4-->f5
1.f7-f8=Q !
1...0-0-0
2.Qf8-f6 zugzwang.
2...LIf5-f7
3.Qf6-g7 threat:
4.Qg7-f8 zugzwang.
4...Rd8*f8
5.Kd6-e7 zugzwang.
5...LIf7-b7
6.Ke7-e8
6...Kc8-d7 # {
(C+ by Popeye 4.73)}
Super AUW. (Author)
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No.998 