Yesterday Chess problem

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Bruno's Chess Problem: 11/18/2019

E.Prandstetter, Ceskoslovensky sach, 1968

Mate in 3 (***)
chess problem diagram
White to play

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1. Qg6! ... 2. Rxe4 ... 3. Qe6#
  1... c1=Q 2. Rxe4 ... 3. Rd8#
  1... Kc4, Kd4 2. Qxe4+ Kc3 3. Qd4#
  1... Nc4 2. Rd8+ Ke5 3. Qe4#
  1... Nd6 2. Rd8 ... 3. Qxd6#
     2... Nac4 3. Qe4#
  1... Nf6 2. Qf5+ Kd6 3. f8=Q#
  1... Bd3 2. Qf5+ Kd6 3. f8=Q#
     2... Kd4, Kc4 3. Qxc5#
  
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2019-11-18 18:50:01, by problemist
The composer is also a strong otb-player: "He was Czechoslovak Champion in 1976 and 1978, and awarded the IM title in 1979." See 179 of his games on chessgames.com.
2019-11-18 18:34:23, by problemist
The obligatory three model mates to qualify for a Bohemian problem are 1.. Bd3 2. Qf5+ Kd4 3. Qxc5#; 1.. Nc4 2. Rd8+ Ncd6 3. Qxe4#; 1.. Kc4 2. Qxe4 Kc3 3. Qd4#. They are all pin model mates by the wQ.
2019-11-18 07:13:13, by problemist
A Bohemian chess puzzle. The key activates the wQ with the quiet threat 2. Rxe4 which also follows on 1.. c4. On 1.. Nd6 quietly 2. Rd8 and on 1.. Bd3 (Nf6), Nc4 2. Qf5+, Rd8+. On 1.. Kc4 (Kd4), Ke5 2. Qxe4+, Rxe4+ and some more dualistic side variations. Due to the many variations (****) are adequate.

Eduard Prandstetter (* 15.12.1948 in Prague) Czech composer.

Since the opening in October 2000, I had published online more than 6650 free chess problems. If you want more details, look at my chess figures pages.

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