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Samomat

Samomat je vrsta šahovskega problema, v katerem beli, ki vleče prvi, prisili črnega, da ga matira v navedenem številu potez. Običajno se označuje s s#2, kar pomeni samomat v dveh potezah.

W. Pauly, 1912
a8 b8 c8 d8 e8 f8 g8 h8
a7 b7 c7 d7 e7 f7 g7 h7
a6 b6 c6 d6 e6 f6 g6 h6
a5 b5 c5 d5 e5 f5 g5 h5
a4 b4 c4 d4 e4 f4 g4 h4
a3 b3 c3 d3 e3 f3 g3 h3
a2 b2 c2 d2 e2 f2 g2 h2
a1 b1 c1 d1 e1 f1 g1 h1
s#2

Avtor problema na desni je Wolfgang Pauly (The Theory of Pawn Promotion, 1912), naloga se glasi samomat v dveh potezah. Če bi beli prisili črnega v potezo Lxg2#, bi bil problem rešen. V samomatu so seveda vloge obrnjene, zato se črni upira matiranju belega kralja. Če beli premakne lovca, gre črni lovec za njim in mata ni; prav tako ni dobra poteza s konjem, ker sprosti črnega kralja; poteza 1.e6 omogoči 1...exf6 in 2...f5; 1.f7 ali 1.fxe7 omogoči 1...Kxg7; 1.g8D ali 1.g8T ker po 1...Bxg2+ 2.D/Txg2; 1.g8S matira črnega, kar je povsem narobe v tej zvrsti problema; 1.g8L tudi ni dobro zaradi 1...gxf6 2.exf6 Lxg2 in beli lovec mora posredovati 3.Ld5. Edina poteza, ki črnega prisili v matiranje je 1.c8S. Naprej gre 1...exf6 2.exf6 Lxg2# ali pa 1...e6 2.g8L Lxg2# (beli promovirani lovec v tej varianti ne more preprečiti mata na d5 zaradi kmeta e6). Do rešitve pelje le podpromocija v skakača, dama, trdnjava ali lovec bi preprečili mat črnega.

Zvrst samomata je tudi refleksni mat. Poleg tega je samomat lahko maksimalist, v katerem mora črni vleči geometrijsko najdaljše poteze.

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