MESON Chess Problem Database

Problem Display
PID: 87647 (b7/3QR3/8/8/5k1B/8/8/4K2R w K - 0 1)

McDowell, Michael

The Problemist, 1993

b7/3QR3/8/8/5k1B/8/8/4K2R

#2

5 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.0-0#
  • Tries
    • 1.Bg5+?
      • 1...Kf3
        • 2.Qh3#
      • 1...Kg3
        • 2.Qh3#
      • 1...Kxg5!
    • 1.Qa4+?
      • 1...Kf3
        • 2.0-0#
      • 1...Be4
        • 2.Qxe4#
      • 1...Kf5!
    • 1.Qd4+?
      • 1...Kf3
        • 2.0-0#
      • 1...Be4
        • 2.Qxe4#
      • 1...Kf5!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Rf7#
      • 1...Kf3
        • 2.0-0#
      • 1...Be4
        • 2.Qxe4#

FEATURES

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