MESON Chess Problem Database

Problem Display
PID: 120596 (6N1/1Q6/8/3Nkp2/7K/8/3P4/8 w - - 0 1)

Wheeler, Charles Henry

Chess Problems, 1880

6N1/1Q6/8/3Nkp2/7K/8/3P4/8

#2

5 + 2

6490 yacpdb 2009
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sde7?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kf4
        • 2.Sg6#
      • 1...Ke6
        • 2.Qd5#
      • 1...f4
        • 2.Qd5#
      • 1...Kd6!
  • Keys
    • 1.Sb4!
      • 1...Kd4
        • 2.Qd5#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kd6
        • 2.Qe7#
      • 1...Ke6
        • 2.Qd5#
        • 2.Qe7#
      • 1...f4
        • 2.Qd5#

This anticipates 222934(1886), 158981(1971)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(D)
        • K(a);S_FLIGHT::S(C)
        • K(a);P-FLIGHT::QAB1(D)
        • P(b);SBLOCK::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT::QAR1(D)
      • K(a);S_FLIGHT::S(C)
      • K(a);S_FLIGHT::QAB1(D)
      • P(b);SBLOCK::QAR1(D)
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