MESON Chess Problem Database

Problem Display
PID: 137676 (2Q5/8/1P6/R7/N1N5/1k6/4K3/8 w - - 0 1)

Zhezherun, Bogdan Valeriovich

Probleemblad, 2010

2Q5/8/1P6/R7/N1N5/1k6/4K3/8

#2

6 + 1

SOLUTION

  • SOUND
  • Sets
    • 1...Kc2
      • 2.Sd2#
  • Tries
    • 1.Rb5+?
      • 1...Kc2
        • 2.Sd2#
        • 2.Sa3#
        • 2.Se3#
        • 2.Sa5#
        • 2.Se5#
        • 2.Sd6#
      • 1...Kxa4
        • 2.Qa6#
      • 1...Ka2!
    • 1.Qf5?
      • 1...Ka2
        • 2.Sc5#
      • 1...Kb4
        • 2.Qb5#
      • 1...Kxc4!
    • 1.Qc5?
      • 1...Kc2
        • 2.Sd2#
      • 1...Ka2!
    • 1.Qc6?
      • 1...Kc2
        • 2.Sd2#
      • 1...Kb4
        • 2.Qb5#
      • 1...Ka2!
    • 1.b7?
      • 1...Kc2
        • 2.Sd2#
      • 1...Kb4
        • 2.b8Q#
        • 2.b8R#
      • 1...Ka2!
  • Keys
    • 1.Qh8!
      • 1...Ka2
        • 2.Qb2#
      • 1...Kc2
        • 2.Qb2#
      • 1...Kb4
        • 2.Qc3#
      • 1...Kxc4
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR(F)+S(C)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(a);S_FLIGHT,XS(B)::QAR2(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::R(D)+S(B)
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAR(F)+S(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAR(F)+S(C)
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(E);
      • Vars
        • K(a);S_FLIGHT::QAR(F)+S(C)
        • K(a);P-FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(a);S_FLIGHT::QAR1(F)
      • K(a);P-FLIGHT::QAB1(F)
      • K(a);S_FLIGHT,XS(C)::QAR1(F)
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