hs#4 coups bicolore
: King can be checked by units of his side
white Pe7f7 Kc8 Bh8
black Pc2e2 Ka3
hs#4 Bicolore(4+3)
{}
1.Kc8-d7 e2-e1=R {} 2.f7-f8=Q Re1-d1 + {} 3.Kd7-e6 c2-c1=S {} 4.e7-e8=B + Rd1-d6 #
s#5 Köko Maximum
: arrival square of a move must be contiguous to another unit
: Black must play longest legal moves
white Qf6 Ke6
black Pg5 Ke8 Rh8
s#5 Maximum Köko(2+3)
{}
1.Qf6-e5 ! zugzwang.
1...0-0{}
2.Ke6-e7 zugzwang.
2...Rf8-f4{}
3.Qe5-f5 zugzwang.
3...Rf4-h4{}
4.Ke7-f8 zugzwang.
4...Rh4-e4{}
5.Qf5-f6
5...Re4-e8 #{}
1...Rh8-h4{}
2.Ke6-d7 +
2...Ke8-d8{}
3.Qe5-f5 zugzwang.
3...Rh4-e4{}
4.Qf5-f6 +
4...Kd8-c7{}
5.Kd7-d8
5...Re4-e8 #
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