MESON Chess Problem Database

Problem Display
PID: 125409 (8/1R6/RN6/2k5/8/4K3/8/6Q1 w - - 0 1)

Anonymous

Source?, 0000

8/1R6/RN6/2k5/8/4K3/8/6Q1

#2

5 + 1

3713 Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sa4+?
      • 1...Kc4
        • 2.Qg8#
      • 1...Kd5!
    • 1.Sd7+?
      • 1...Kd5
        • 2.Qg8#
      • 1...Kc4!
    • 1.Qc1+?
      • 1...Kb4
        • 2.Sa4#
        • 2.Sd5#
        • 2.Sd7#
        • 2.Sa8#
        • 2.Sc8#
        • 2.Qc4#
      • 1...Kb5
        • 2.Qc4#
      • 1...Kd6!
    • 1.Qg5+?
      • 1...Kc6
        • 2.Qd5#
      • 1...Kd6
        • 2.Sa4#
        • 2.Sc4#
        • 2.Sd7#
        • 2.Sa8#
        • 2.Sc8#
        • 2.Qd5#
      • 1...Kb4!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Sa4#
        • 2.Sd7#
      • 1...Kb4
        • 2.Qc4#
      • 1...Kb5
        • 2.Qc4#
      • 1...Kc6
        • 2.Qd5#
      • 1...Kd6
        • 2.Qd5#

This anticipates 22075(1924)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);S_FLIGHT::QAR1(A)
      • K(a);P-FLIGHT::QAB1(A)
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