Solution:
1...Bc5/Bd4/Bc7/Ba7 2.Rf6#
1...Rd6/Rd8/Rc7/Rb7/Ra7/Re7 2.Qf5#
1...Rd5/Rd4/Rxd3 2.f8Q#/f8R#/Qf5#
1.Nd5[A]? (2.Nc5#[B])
1...Rxd5 2.f8Q#/f8R#/Qf5#
1...Bd4 2.Rf6#
1...Bxf2+ 2.Nxf2#
but 1...Be3!
1.f8Q+!
1...Rf7 2.Qxf7#
1.f8R+!
1...Rf7 2.Rxf7#
1.Nc5[B]! (2.Nd5#[A])
1...Bxc5 2.Rf6#
1...Rd4/Rd3/Rd2 2.f8Q#/f8R#/Qf5#
1...Rd1+ 2.Nxd1#
Keywords:
- Cooked
- Checking key
- Threat reversal
- Switchback
Similar diagrams (1):
References:
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Eduardo Sadier Twomovers Collection (pgn)
[Event "?"]
[Site "Het Parool, 1972"]
[Date "1972.??.??"]
[Round "?"]
[White "BAKKER Pieter A."]
[Black " #2"]
[Result "1-0"]
[SetUp "1"]
[FEN "2Q5/3r1P1B/Rb6/p3P2p/4P1p1/R2NNkP1/4pPp1/4K1n1 w - - 0 1"]
1. Nc5 1-0
-
Fritz Schonert Collection (text/plain)
???????? Pieter A. Bakker
???????? Het Parool
???????? 1972 1. Preis
????????
????????
???????? 1.Sd3-c5 ! und NL 1.f7-f8D/T
???????? Ke1 Dc8 Ta3 Ta6 Lh7 Sd3 Se3 Be4 Be5 Bf2 Bf7 Bg3
??????? Kf3 Td7 Lb6 Sg1 Ba5 Be2 Bg2 Bg4 Bh5
Matt in 2 12+9=21