MESON Chess Problem Database

Problem Display
PID: 109640 (5K2/8/Q7/4k3/4P3/8/4R3/4B3 w - - 0 1)

Vishkov, Anatoly Ivanovich

Pertchoveresen, 1993

5K2/8/Q7/4k3/4P3/8/4R3/4B3

#2

5 + 1

6490 yacpdb 2009
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Qa3?
      • 1...Kd4
        • 2.Qc3#
      • 1...Kf4
        • 2.Qg3#
      • 1...Ke6
        • 2.Qe7#
      • 1...Kf6!
    • 1.Qc6?
      • 1...Kd4
        • 2.Qd5#
        • 2.Qc3#
      • 1...Kf4!
    • 1.Qe6+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kf4
        • 2.Qf5#
      • 1...Kxe6!
    • 1.Qg6?
      • 1...Kf4
        • 2.Qf5#
        • 2.Qg3#
      • 1...Kd4!
  • Keys
    • 1.Qc8!
      • 1...Kd4
        • 2.Qc3#
      • 1...Kf4
        • 2.Qf5#
      • 1...Kd6
        • 2.Bg3#
      • 1...Kf6
        • 2.Qf5#

This anticipates 153216(2011)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);
      • Vars
        • K(a);S_FLIGHT::QAB1(D)
        • K(a);P-FLIGHT::QAR1(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(D)
      • Refutation
        • K(a);P-FLIGHT,XQ(D)
    • Try
      • Q(D);
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(D);
    • Vars
      • K(a);S_FLIGHT::QAB1(D)
      • K(a);S_FLIGHT::QAR1(D)
      • K(a);S_FLIGHT::B(A)
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