MESON Chess Problem Database

Problem Display
PID: 150625 (7K/5p2/6kp/7R/4p2p/8/8/3Q4 w - - 0 1)

Edwards, Brian

British Chess Magazine, 1989

7K/5p2/6kp/7R/4p2p/8/8/3Q4

#2

3 + 5

15235 Bedwards Best (Brian Edwards) 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Qd6#
  • Tries
    • 1.Rf5?
      • threat
        • 2.Qg4#
        • 2.Qh5#
      • 1...h5
        • 2.Qxh5#
      • 1...f6
        • 2.Qh5#
      • 1...Kxf5!
    • 1.Qf1?
      • threat
        • 2.Qf5#
      • 1...Kxh5
        • 2.Qf5#
      • 1...f5
        • 2.Qxf5#
      • 1...f6!
    • 1.Qd5?
      • threat
        • 2.Qf5#
      • 1...Kf6
        • 2.Qd6#
      • 1...f5
        • 2.Qxf5#
      • 1...f6!
  • Keys
    • 1.Qd7!
      • threat
        • 2.Qf5#
      • 1...Kxh5
        • 2.Qf5#
      • 1...Kf6
        • 2.Qd6#
      • 1...f6
        • 2.Qe8#
      • 1...f5
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);P-FLIGHT::QAR2(A)
  • Tries
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(d);::QAB1(A),XP(d)
        • P(e);::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT,XR(B)
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(c);S_FLIGHT,XR(B)::QAR2(A)
        • P(e);::QAB1(A),XP(e)
      • Refutation
        • P(e);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(c);P-FLIGHT::QAR2(A)
        • P(e);::QAB1(A),XP(e)
      • Refutation
        • P(e);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(c);S_FLIGHT,XR(B)::QAR2(A)
      • K(c);P-FLIGHT::QAR2(A)
      • P(e);OGATEB,SBLOCK::QAB(A)
      • P(e);::QAB1(A),XP(e)
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