Problem Display
PID: 116709 (8/8/8/8/4N3/p7/Kn1R4/5k1B w - - 0 1)

Ilyasov, Stanislav Alekseevich

5th Prize, Canadian Chess Chat, 1980

8/8/8/8/4N3/p7/Kn1R4/5k1B

#3

4 + 3


731 Canadian Chess Chat 1983
6490 yacpdb 2009

SOLUTION


  • SOUND
  • Sets
    • 1...Kg1
      • 2.Sg3
        • threat
          • 3.Rg2#
    • 1...Sd1
      • 2.Sg3+
        • 2...Ke1
          • 3.Re2#
        • 2...Kg1
          • 3.Rg2#
  • Tries
    • 1.Sg3+?
      • 1...Kg1
        • 2.Rg2#
      • 1...Ke1!
    • 1.Bf3?
      • threat
        • 2.Rh2
          • threat
            • 3.Rh1#
          • 2...Ke1
            • 3.Rh1#
          • 2...Kg1
            • 3.Rh1#
      • 1...Ke1
        • 2.Rh2
          • threat
            • 3.Rh1#
          • 2...Kf1
            • 3.Rh1#
      • 1...Kg1
        • 2.Sg3
          • threat
            • 3.Rg2#
      • 1...Sd3!
    • 1.Re2?
      • threat
        • 2.Sg3+
          • 2...Kg1
            • 3.Rg2#
      • 1...Kg1
        • 2.Sg3
          • threat
            • 3.Rg2#
      • 1...Kxe2!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Sf3
          • threat
            • 3.Bg2#
        • 2.Bg2+
          • 2...Ke1
            • 3.Sf3#
          • 2...Kg1
            • 3.Sf3#
      • 1...Ke1
        • 2.Sf3+
          • 2...Kf1
            • 3.Bg2#
      • 1...Kg1
        • 2.Sf3+
          • 2...Kf1
            • 3.Bg2#
          • 2...Kxh1
            • 3.Rh2#
      • 1...Sd3
        • 2.Bg2+
          • 2...Ke1
            • 3.Sf3#
          • 2...Kg1
            • 3.Sf3#
      • 1...Sd1
        • 2.Bg2+
          • 2...Ke1
            • 3.Sf3#
          • 2...Kg1
            • 3.Sf3#
      • 1...Sa4
        • 2.Bg2+
          • 2...Ke1
            • 3.Sf3#
          • 2...Kg1
            • 3.Sf3#
      • 1...Sc4
        • 2.Bg2+
          • 2...Ke1
            • 3.Sf3#
          • 2...Kg1
            • 3.Sf3#

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