MESON Chess Problem Database

Problem Display
PID: 4987 (K6Q/8/8/3kp1P1/8/B7/2B5/8 w - - 0 1)

Haurz, J

CLS, 1896

K6Q/8/8/3kp1P1/8/B7/2B5/8

#2

5 + 2

5454 Near Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qc8?
      • 1...Kd4
        • 2.Qc5#
      • 1...e4!
    • 1.Qd8+?
      • 1...Kc4
        • 2.Qd3#
      • 1...Kc6
        • 2.Ba4#
      • 1...Ke6!
  • Keys
    • 1.Qh7!
      • 1...Kc4
        • 2.Qd3#
      • 1...Kd4
        • 2.Qd3#
      • 1...Kc6
        • 2.Qb7#
      • 1...Ke6
        • 2.Bb3#
      • 1...e4
        • 2.Qxe4#

This anticipates 80929(1964), 246656(1998)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(E);
      • Vars
        • K(a);P-FLIGHT::QAB1(E)
      • Refutation
        • P(b);
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(E)
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(E);
    • Vars
      • K(a);S_FLIGHT::QAB1(E)
      • K(a);P-FLIGHT::QAR1(E)
      • K(a);S_FLIGHT::B(A)
      • P(b);::QAB1(E),XP(b)
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