MESON Chess Problem Database

Problem Display
PID: 221598 (8/7Q/B7/8/1K6/4k3/4P3/6R1 w - - 0 1)

Prideaux, Henry Maxwell

The Field, 1892

(First published on Sat Sep 10 1892)

8/7Q/B7/8/1K6/4k3/4P3/6R1

#2

5 + 1

3713 Snap 2020
15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd2
      • 2.Qd3#
    • 1...Kf2
      • 2.Qa7#
  • Tries
    • 1.Kc3?
      • 1...Kf2
        • 2.Qa7#
      • 1...Kf4!
    • 1.Rf1?
      • threat
        • 2.Qd3#
      • 1...Kd2
        • 2.Qd3#
      • 1...Kd4!
    • 1.Qd3+?
      • 1...Kf2
        • 2.Qg3#
        • 2.Qd4#
      • 1...Kf4!
    • 1.Qe4+?
      • 1...Kd2
        • 2.Qd3#
      • 1...Kf2
        • 2.Qd4#
      • 1...Kxe4!
    • 1.Qf5?
      • 1...Kd2
        • 2.Qd3#
      • 1...Kd4!
  • Keys
    • 1.Bd3!
      • 1...Kd2
        • 2.Qh6#
      • 1...Kf2
        • 2.Qa7#
      • 1...Kd4
        • 2.Qe4#
      • 1...Kf4
        • 2.Qe4#

This anticipates 76021(1922)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(E)
    • K(a);S_FLIGHT::QAB(E)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAB(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Threat
        • QAR1(E)
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(E);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
        • K(a);S_FLIGHT::QAB(E)
      • Refutation
        • K(a);P-FLIGHT,XQ(E)
    • Try
      • Q(E);
      • Vars
        • K(a);S_FLIGHT::QAR1(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(D);
    • Vars
      • K(a);S_FLIGHT::QAB(E)
      • K(a);S_FLIGHT::QAR1(E)
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