MESON Chess Problem Database

Problem Display
PID: 244662 (8/7Q/K7/2k5/4PB2/1P6/8/n7 w - - 0 1)

Burke, R St G

The Field, 1904

8/7Q/K7/2k5/4PB2/1P6/8/n7

#2

5 + 2

5454 Near Snap 2021
15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc6
      • 2.Qc7#
  • Tries
    • 1.Qa7+?
      • 1...Kc6
        • 2.Qc7#
      • 1...Kb4!
    • 1.Qc7+?
      • 1...Kd4
        • 2.Qc4#
      • 1...Kb4!
    • 1.Qe7+?
      • 1...Kc6
        • 2.Qd6#
        • 2.Qc7#
      • 1...Kd4!
    • 1.Qg7?
      • threat
        • 2.Qc3#
      • 1...Kc6
        • 2.Qc7#
      • 1...Kb4!
    • 1.Qh8?
      • threat
        • 2.Qc3#
      • 1...Kc6
        • 2.Qc8#
      • 1...Kb4!
  • Keys
    • 1.Qh3!
      • threat
        • 2.Qc3#
      • 1...Kb4
        • 2.Bd6#
      • 1...Kd4
        • 2.Qe3#
      • 1...Kc6
        • 2.Qc8#

This anticipates 183663(1915), 245997(2009)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR1(E)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAR2(E)
      • Vars
        • K(b);P-FLIGHT::QAR1(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(E);
      • Threat
        • QAR2(E)
      • Vars
        • K(b);P-FLIGHT::QAR2(E)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(E);
    • Threat
      • QAR2(E)
    • Vars
      • K(b);S_FLIGHT::B(C)
      • K(b);S_FLIGHT::QAB1(E)
      • K(b);P-FLIGHT::QAR2(E)
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