MESON Chess Problem Database

Problem Display
PID: 177272 (r6k/3R2p1/6B1/5p2/2Q3pp/3K1p2/8/1n6 w - - 0 1)

Sonnenfeld, Felix Alexander

HM., Schach-Echo, 1963

r6k/3R2p1/6B1/5p2/2Q3pp/3K1p2/8/1n6

#4

4 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Keys
    • 1.Rc7!
      • threat
        • 2.Rc8+
          • 2...Rxc8
            • 3.Qxc8#
      • 1...Ra3+
        • 2.Kd4
          • threat
            • 3.Rc8#
          • 2...Rd3+
            • 3.Kxd3
              • threat
                • 4.Rc8#
            • 3.Qxd3
              • threat
                • 4.Rc8#
              • 3...Kg8
                • 4.Rc8#
          • 2...Re3
            • 3.Rc8+
              • 3...Re8
                • 4.Rxe8#
          • 2...Ra8
            • 3.Rc8+
              • 3...Rxc8
                • 4.Qxc8#
      • 1...Rd8+
        • 2.Qd4
          • threat
            • 3.Qxd8#
          • 2...Rxd4+
            • 3.Kxd4
              • threat
                • 4.Rc8#
              • 3...Kg8
                • 4.Rc8#
          • 2...Rd5
            • 3.Rc8+
              • 3...Rd8
                • 4.Rxd8#
                • 4.Qxd8#
            • 3.Qxd5
              • threat
                • 4.Rc8#
                • 4.Qa8#
                • 4.Qd8#
          • 2...Rd6
            • 3.Rc8+
              • 3...Rd8
                • 4.Rxd8#
                • 4.Qxd8#
            • 3.Qxd6
              • threat
                • 4.Rc8#
                • 4.Qf8#
                • 4.Qd8#
              • 3...Kg8
                • 4.Rc8#
                • 4.Qd8#
          • 2...Rd7
            • 3.Rc8+
              • 3...Rd8
                • 4.Rxd8#
                • 4.Qxd8#
            • 3.Rxd7
              • threat
                • 4.Rd8#
                • 4.Qxg7#
              • 3...Kg8
                • 4.Rd8#
                • 4.Qxg7#
            • 3.Qxd7
              • threat
                • 4.Rc8#
                • 4.Qc8#
                • 4.Qe8#
                • 4.Qxg7#
                • 4.Qd8#
              • 3...Kg8
                • 4.Rc8#
                • 4.Qc8#
                • 4.Qe8#
                • 4.Qxg7#
                • 4.Qd8#
          • 2...Rg8
            • 3.Qf6
              • threat
                • 4.Qxh4#
              • 3...Rd8+
                • 4.Qxd8#
              • 3...gxf6
                • 4.Rh7#
              • 3...Ra8
                • 4.Qxg7#
              • 3...Rb8
                • 4.Qxg7#
              • 3...Rc8
                • 4.Rxc8#
                • 4.Qxg7#
              • 3...Re8
                • 4.Qxg7#
              • 3...Rf8
                • 4.Qxg7#
                • 4.Qxf8#
              • 3...h3
                • 4.Qh4#

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