MESON Chess Problem Database

Problem Display
PID: 233604 (8/3K4/N7/1k3p2/N7/3R4/8/8 w - - 0 1)

Lindgren, Frithiof

Polistidningen, 1942

8/3K4/N7/1k3p2/N7/3R4/8/8

#4

4 + 2

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Keys
    • 1.Kc7!
      • threat
        • 2.Rd4
          • threat
            • 3.Sc3+
              • 3...Ka5
                • 4.Ra4#
              • 3...Kxa6
                • 4.Ra4#
          • 2...Ka5
            • 3.Sc3
              • threat
                • 4.Ra4#
              • 3...Kxa6
                • 4.Ra4#
          • 2...Kxa6
            • 3.Sc3
              • threat
                • 4.Ra4#
              • 3...Ka5
                • 4.Ra4#
              • 3...Ka7
                • 4.Ra4#
      • 1...Kxa4
        • 2.Kc6
          • 2...f4
            • 3.Rf3
              • 3...Ka5
                • 4.Ra3#
      • 1...Kc4
        • 2.Sb2+
          • 2...Kb5
            • 3.Kb7
              • threat
                • 4.Rd5#
              • 3...Ka5
                • 4.Rd5#
      • 1...Ka5
        • 2.Sc3
          • threat
            • 3.Kb7
              • 3...f4
                • 4.Rd5#
            • 3.Rd1
              • threat
                • 4.Ra1#
              • 3...Kxa6
                • 4.Ra1#
            • 3.Rd2
              • threat
                • 4.Ra2#
              • 3...Kxa6
                • 4.Ra2#
            • 3.Rd4
              • threat
                • 4.Ra4#
              • 3...Kxa6
                • 4.Ra4#
          • 2...Kxa6
            • 3.Rd4
              • threat
                • 4.Ra4#
              • 3...Ka5
                • 4.Ra4#
              • 3...Ka7
                • 4.Ra4#
        • 2.Rd4
          • threat
            • 3.Sc3
              • threat
                • 4.Ra4#
              • 3...Kxa6
                • 4.Ra4#
          • 2...Kb5
            • 3.Sc3+
              • 3...Ka5
                • 4.Ra4#
              • 3...Kxa6
                • 4.Ra4#
          • 2...Kxa6
            • 3.Sc3
              • threat
                • 4.Ra4#
              • 3...Ka5
                • 4.Ra4#
              • 3...Ka7
                • 4.Ra4#
      • 1...Kxa6
        • 2.Sc3
          • threat
            • 3.Rd4
              • threat
                • 4.Ra4#
              • 3...Ka5
                • 4.Ra4#
              • 3...Ka7
                • 4.Ra4#
          • 2...Ka5
            • 3.Rd4
              • threat
                • 4.Ra4#
              • 3...Ka6
                • 4.Ra4#
          • 2...Ka7
            • 3.Rd1
              • threat
                • 4.Ra1#
              • 3...Ka6
                • 4.Ra1#
              • 3...Ka8
                • 4.Ra1#
            • 3.Rd2
              • threat
                • 4.Ra2#
              • 3...Ka6
                • 4.Ra2#
              • 3...Ka8
                • 4.Ra2#
            • 3.Rd4
              • threat
                • 4.Ra4#
              • 3...Ka6
                • 4.Ra4#
              • 3...Ka8
                • 4.Ra4#

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