MESON Chess Problem Database

Problem Display
PID: 238261 (6RQ/8/4kP2/1K3N2/8/8/8/B7 w - - 0 1)

Murashev, Pavel Aleksandrovich

ChessStar, 2019

6RQ/8/4kP2/1K3N2/8/8/8/B7

#2

6 + 1

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Rg4?
      • 1...Kd5
        • 2.Qg8#
      • 1...Kxf5
        • 2.Qc8#
      • 1...Kf7
        • 2.Qg8#
      • 1...Kd7!
    • 1.Rd8?
      • 1...Kf7
        • 2.Qe8#
        • 2.Qg8#
      • 1...Kxf5!
    • 1.Re8+?
      • 1...Kd5
        • 2.Re5#
        • 2.Qh1#
        • 2.Qg8#
      • 1...Kd7
        • 2.Re7#
      • 1...Kf7
        • 2.Qh5#
        • 2.Qg8#
      • 1...Kxf5!
    • 1.Qg7?
      • 1...Kxf5
        • 2.Qg4#
      • 1...Kd5!
    • 1.Qh1?
      • 1...Kd7
        • 2.Qc6#
      • 1...Kf7
        • 2.Qd5#
      • 1...Kxf5!
    • 1.Qh4?
      • 1...Kd5
        • 2.Qc4#
      • 1...Kxf5
        • 2.Qg4#
      • 1...Kf7
        • 2.Qc4#
      • 1...Kd7!
    • 1.Qh5?
      • 1...Kd7
        • 2.Qf7#
      • 1...Kd5!
  • Keys
    • 1.Qh2!
      • 1...Kd5
        • 2.Qe5#
      • 1...Kxf5
        • 2.Qe5#
      • 1...Kd7
        • 2.Qd6#
      • 1...Kf7
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(E);
      • Vars
        • K(a);S_FLIGHT::QAB(F)
        • K(a);S_FLIGHT,XS(C)::QAB(F)
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(E);
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • R(E);CHECK
      • Vars
        • K(a);S_FLIGHT::R1(E)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(F);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
        • K(a);S_FLIGHT::QAB(F)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
        • K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(F)
        • K(a);S_FLIGHT::QAB(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAR2(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(a);S_FLIGHT::QAR1(F)
      • K(a);S_FLIGHT,XS(C)::QAR1(F)
      • K(a);S_FLIGHT::QAB(F)
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