H#2: In a helpmate twomover of Neuman type White could give mate on his 1st move. In one solution the mate is made possible by White's waiting move and Black's switchback. In the second solution, Black plays a different move without switchback, leading to a different mate.
⧖ Named after Yeshayahu Saul Segenreich (Romania-Israel, 1903–1975), likely introduced in 1967.
See also: Apparent mate.
Segenreich, Saul
Shahmat, 1967
1...Rxb2#
1.Ra1
Kxg5
2.Ra2
Rxb2#
1.Sf3
Re5
2.Sd2
Rc3#
FEN: 8/4p2p/4P2P/2p3pK/2P1R1P1/p2k4/rpR1N2p/1B4nr
External links:
Avner, Uri
The Problemist, 2012
1...d4#
1.Bb3
d3
2.Bc4
d4#
1.Bd3
Bf3
2.Bf5
Sd7#
FEN: 8/8/pp1ppN2/qp1Nk3/rrb3Bp/2K4P/pn1P4/b7