MESON Chess Problem Database

Problem Display
PID: 120246 (8/1Q6/p1K5/8/p7/P1R5/1b6/1k6 w - - 0 1)

de Jong, Leonard Nicholaas

Tijdschrift vd KNSB, 1938

8/1Q6/p1K5/8/p7/P1R5/1b6/1k6

#4

4 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Keys
    • 1.Kd7!
      • 1...Ka1
        • 2.Rc2
          • threat
            • 3.Qxb2#
          • 2...Bxa3
            • 3.Qh1+
              • 3...Bc1
                • 4.Qxc1#
          • 2...Bc1
            • 3.Qh1
              • threat
                • 4.Qxc1#
              • 3...Kb1
                • 4.Qxc1#
          • 2...Bc3
            • 3.Qh1+
              • 3...Be1
                • 4.Qxe1#
          • 2...Bd4
            • 3.Qh1+
              • 3...Bg1
                • 4.Qxg1#
      • 1...a5
        • 2.Rc8
          • 2...Ka1
            • 3.Rb8
              • threat
                • 4.Qxb2#
              • 3...Kb1
                • 4.Qxb2#
              • 3...Ka2
                • 4.Qxb2#
              • 3...Bxa3
                • 4.Qb1#
              • 3...Bc1
                • 4.Qb1#
              • 3...Bc3
                • 4.Qb1#
              • 3...Bd4
                • 4.Qb1#
              • 3...Be5
                • 4.Qb1#
              • 3...Bf6
                • 4.Qb1#
              • 3...Bg7
                • 4.Qb1#
              • 3...Bh8
                • 4.Qb1#
          • 2...Ka2
            • 3.Rc2
              • threat
                • 4.Qxb2#
              • 3...Ka1
                • 4.Qxb2#
              • 3...Kb1
                • 4.Qxb2#
              • 3...Kxa3
                • 4.Qxb2#

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