MESON Chess Problem Database

Problem Display
PID: 222384 (8/1R6/8/3k4/8/1P6/3K3B/6Q1 w - - 0 1)

Feist, CWM

Leeds Mercury Weekly Supplement, 1884

8/1R6/8/3k4/8/1P6/3K3B/6Q1

#2

5 + 1

6490 yacpdb 2020
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qd4+?
      • 1...Kc6
        • 2.Rb6#
      • 1...Ke6
        • 2.Qe5#
      • 1...Kxd4!
    • 1.Qg3?
      • 1...Kd4
        • 2.Qe5#
      • 1...Ke4
        • 2.Qd3#
      • 1...Kc5
        • 2.Qd6#
      • 1...Ke6
        • 2.Qe5#
      • 1...Kc6!
    • 1.Qg4?
      • threat
        • 2.Qc4#
      • 1...Kc5
        • 2.Qc4#
      • 1...Kc6!
    • 1.Qg5+?
      • 1...Kd4
        • 2.Rb4#
        • 2.Qe5#
      • 1...Kc6
        • 2.Qb5#
      • 1...Ke6
        • 2.Re7#
        • 2.Qe5#
      • 1...Ke4!
    • 1.Qg6?
      • 1...Kc5
        • 2.Qd6#
      • 1...Kd4!
  • Keys
    • 1.Qf1!
      • threat
        • 2.Qc4#
      • 1...Kd4
        • 2.Qc4#
      • 1...Ke4
        • 2.Qd3#
      • 1...Kc5
        • 2.Qc4#
      • 1...Kc6
        • 2.Qb5#
      • 1...Ke6
        • 2.Qf7#

This anticipates 92914(1925), 53663(1950), 157915(1958)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::R1(E)
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);S_FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(a);P-FLIGHT::QAR1(A)
      • K(a);S_FLIGHT::QAB1(A)
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