Chess problem: 4 days ago

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Bruno's Chess Problem: 09/15/2018

F.Istokovics, L'Italia Scacchistica, 1982

Mate in 2(**)
chess problem diagram
White to play

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1. Nf4! ... 2. Nc6#
  1... Rxd5 2. Qd3#
  1... Kd4 2. Nxf3#
  1... Bxd5 2. Rc4#
  
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2018-09-15 20:14:11, by problemist
The solver is invited to move one of the wNs transforming the half-battery NNR on the e-file into a battery NR.The remarkable try 1. Nc6? (threat 2. Nf4#) Kd3! has good N-mates for the black captures on d5 1.. Rxd5+, Bxd5, Kxd5 2. Ng5#, Nc5#, Nb4#, the first two using the black self-block on d5. The key shows a threat reversal of the try: 1. Nf4 (threat 2. Nc6#). On 1.. Rxd5, Bxd5 (Schiffmann defenses) there are changed mates using the black self-pin on d5: 2. Qd3#, Rc4#. Additionally 1.. Kd4 2. Nxf3#. 1st Commendation.

Ferenc Istokovics (* 29.11.1937 in Baja, † 16.5.1986 in Baja) Hungarian composer. "Ferenc Istokovics was a twomover composer." For more biographical information about the composer see the magnificent Hungarian site magyarsakkszerzok.hu: "Sakkszerzői munkásságát a civil foglalkozásából is eredő villamosmérnöki precizitás jellemezte. Özvegye, Istokovics Ferencné által küldött dokumentumokból tudhatjuk, hogy 1982-ig 25 műve kapott kitüntetést, közülük 7 díjas, 8 dicséretes és 10 elismeréses található. A XIII. Magyar Sakkszerző Bajnokságon a 6-8. helyezést érte el..." (Just use the Google translator if you don't understand Hungarian.)
2018-09-15 16:47:52, by slowbut2
before my seeing comments: My solution: to mate with the right rook [or knight,left rook,queen] after some move of black, white's nffour is start

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