py_20100216

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)

Solution

{

} 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)

Solution

{

} 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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