MESON Chess Problem Database

Problem Display
PID: 246986 (R7/6p1/2P3p1/2b3Rp/n3pk1P/4p3/NP2P1p1/6K1 w - - 0 1)

Johner, Hans

Neue Zurcher Zeitung, 1957

R7/6p1/2P3p1/2b3Rp/n3pk1P/4p3/NP2P1p1/6K1

#4

8 + 9

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Keys
    • 1.Ra7!
      • threat
        • 2.Rf7#
      • 1...Bxa7
        • 2.Sb4
          • threat
            • 3.Sd5#
          • 2...Sc3
            • 3.bxc3
              • threat
                • 4.Sd5#
          • 2...Sb6
            • 3.c7
              • 3...Bb8
                • 4.cxb8Q#
                • 4.cxb8B#
              • 3...Sa4
                • 4.Sd5#
              • 3...Sc4
                • 4.Sd5#
              • 3...Sd5
                • 4.Sxd5#
              • 3...Sd7
                • 4.Sd5#
              • 3...Sa8
                • 4.Sd5#
              • 3...Sc8
                • 4.Sd5#
      • 1...Bd4
        • 2.Sb4
          • threat
            • 3.Sd5#
          • 2...Sc3
            • 3.bxc3
              • threat
                • 4.Sd5#
          • 2...Sb6
            • 3.Ra4
              • 3...Bxb2
                • 4.Sd3#
              • 3...Sxa4
                • 4.Sd5#
              • 3...Bc3
                • 4.Sd3#
              • 3...Bc5
                • 4.Sd3#
              • 3...Be5
                • 4.Sd3#
              • 3...Bf6
                • 4.Sd3#
              • 3...Sc4
                • 4.Sd5#
              • 3...Sd5
                • 4.Sxd5#
              • 3...Sd7
                • 4.Sd5#
              • 3...Sa8
                • 4.Sd5#
              • 3...Sc8
                • 4.Sd5#

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