Section B1 – Min Win
1.Bb7!
( In this version the bishop has to switch to a back-diagonal 1.Bd7? Ke7 2.Kb2 c5 3.Kc3 b5 4.Kd3 c4+ 5.Kd4 Kd6 6.Bc8 Ke7 =, quiet 7.Ke5? c3 compare with the first position )
( Thematic try 1.Ba6? Ke7 2.Bc4 b5 3.Bd5 c6!
( 3…c5? 4.Kb2 Kd6 5.Kc3 Ke7 6.Kd3 c4+ 7.Kc3 Kd6 8.Kd4 Ke7 9.Ke5 c3 10.Bb3 )
4.Ba2 c5 5.Bd5 c4 6.Kb2 Ke8! or
( 6…Kd8! )
( 6…Kf8! )
( 6…Kd6?? 7.Kc2!! Ke7 8.Kc3 Kd6 9.Kd4 )
7.Kc2!? Kd8!
( 7…Kf8! )
( 7…Ke7? 8.Kc3 +- )
8.Kd2 Ke8! 9.Kc3 Ke7 10.Kd4 Kd6 Mutual zugzwang )
1…Ke7 2.Bd5 c6 3.Bb3
( or 3.Ba2 )
3…b5 4.Kb2 c5 5.Bd5 c4 6.Kc3 Kd6 7.Kd4 Ke7 8.Ke5 c3 9.Bb3 1-0