Helpmates with twin by moving black king 4

Again a few king-twinned helpmates. For older look at 1, 2, some opinions of composers you can find here. Composition here were taken from Abum FIDE 1989-91. One of the qualified is missing here - Toma Garai's E190 with 8 pts was already shown here.

Nikos Siotis Probleemblad 1991 Album FIDE 1989-91 - E119	a) 1.Rd8 Be6 2.Rb4 Bc4# b) 1.Rf4 Re6 2.Rd5 Rd6# 2 pairs of interchanged functions, black critical moves, white battery creation with white Grimshaw. 8 pts.

h#2 (8+8) b) e7 -» f5

Franz Pachl feenschach 1990 Album FIDE 1989-91 - E120	a) 1.Bg4 Rd5 2.R6c2 Rc5# b) 1.Ra6 Bd5 2.Bc2 Be4# 2 pairs of interchanged functions, black critical moves, white battery creation with white Grimshaw, white hesitation. 8,5 pts.

h#2 (6+11) b) f3 -» a5

György Bakcsi 2nd Prize U.S.P.B 1989 Album FIDE 1989-91 - E128	a) 1.Qxc3 Sf2 2.Qc2+ Sd3# b) 1.Rxc5 e7 2.Rc6+ Bd6# Black switchbacks, cross-checks, interchange of functions between identical pieces. 8 pts.

h#2 (9+10) b) c1 -» c7

Toma Garai Die Schwalbe 1990 Album FIDE 1989-91 - E199	a) 1.Bd2+ Bb5 2.Qxd4 Sc5 3.Qb2 Bd3# b) 1.Be3+ Sg5 2.Rf2 Bf5 3.Re2 Sf3# Reciprocal unpins by wB and wS, interchange of function between these pieces. 8 pts.

h#3 (7+9) b) c2 -» d2

Franz Pachl Die Schwalbe 1990 Album FIDE 1989-91 - E204	a) 1.Rc7 Bd5 2.Bg5 Rd3 3.Be7 Bc4# b) 1.Bb4 Rd5 2.Rf3 Be6 3.Rc3 Rd7# White Grimshaw, white anticritical move, white hesitation, diagonal-orthogonal correspondence. 9 pts.

h#3 (3+15) b) d6 -» c4

Jevgenij Bogdanov Vjacheslav Vladimirov 2nd Prize Memorial Birnov 1989 Album FIDE 1989-91 - E207	a) 1.Rxg3+ Ke4 2.Rf3 Rg8 3.Bg7 Ra8# b) 1.Bxg2+ Ke3 2.Bf3 Bxh4 3.Rg7 Bxf6# Zilahi, 2 black Grimshaws, model mates. 8 pts.

h#3 (8+11) b) a4 -» a1

Anatolij Stjopotchkin Vjacheslav Anufriev Probleemblad 1991 Album FIDE 1989-91 - E244	a) 1.Kf7 Rd2 2.Kg8 Rxb2 3.Sf7 Rxb3 4.Rg2 Re3 5.Rg7 Re8# b) 1.Kh5 Ra5 2.Bg4 Rxa3 3.Sg6 Ra7 4.Ra5 Rxb7 5.Rg5 Rxh7# c) 1.Sf3 Rxd1+ 2.Se1 Rd3 3.Sg2 Rxb3 4.Ra1+ Kc2 5.Rg1 Rh3# Annihilation of black force, echo model mates. 8 pts.

h#5 (2+10) b) e6 -» g4 c) e6 -» h1

Comments to Juraj Lörinc.
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