Zagonetka 438259: Bijeli dobiva
Karlis Karlovich Betins (Behting) - EmmanuilStepanovich Schiffers
Shakhmatny Zhurnal tourney-4 1894-6 corr Russia, 1894
Shakhmatny Zhurnal tourney-4 1894-6 corr Russia, 1894
Povucite figure kako bi riješili zagonetku.