MESON Chess Problem Database

Problem Display
PID: 240465 (8/8/8/8/8/8/6Q1/n1k2K1R w - - 0 1)

Parkhomenko, Nikolai A

Buletin Problemistic, 1996

8/8/8/8/8/8/6Q1/n1k2K1R

#2

3 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Kg1?
      • threat
        • 2.Kh2#
      • 1...Kb1
        • 2.Kh2#
      • 1...Kd1
        • 2.Kh2#
      • 1...Sc2!
    • 1.Qa2?
      • threat
        • 2.Ke2#
        • 2.Kf2#
        • 2.Kg2#
      • 1...Kd1
        • 2.Kf2#
        • 2.Kg2#
      • 1...Sc2!
    • 1.Qb2+?
      • 1...Kd1
        • 2.Kf2#
        • 2.Kg2#
      • 1...Kxb2!
    • 1.Qd2+?
      • 1...Kb1
        • 2.Ke2#
        • 2.Kf2#
        • 2.Kg2#
      • 1...Kxd2!
    • 1.Qe2?
      • threat
        • 2.Kf2#
        • 2.Kg2#
      • 1...Kb1
        • 2.Kf2#
        • 2.Kg2#
      • 1...Sc2!
    • 1.Qf2?
      • threat
        • 2.Kg2#
      • 1...Kb1
        • 2.Kg2#
      • 1...Kd1
        • 2.Kg2#
      • 1...Sc2!
  • Keys
    • 1.Rh2!
      • 1...Kb1
        • 2.Qb2#
      • 1...Kd1
        • 2.Qd2#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sb3
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Threat
        • R(B)+K(A)
      • Vars
        • K(b);P-FLIGHT::R(B)+K(A)
      • Refutation
        • S(a);
    • Try
      • Q(C);
      • Threat
        • DUALS(3)
      • Refutation
        • S(a);
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);S_FLIGHT,XQ(C)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Refutation
        • S(a);
    • Try
      • Q(C);
      • Threat
        • R(B)+K(A)
      • Vars
        • K(b);P-FLIGHT::R(B)+K(A)
      • Refutation
        • S(a);
  • Actual
    • R(B);
    • Vars
      • K(b);P-FLIGHT::QAR1(C)
      • S(a);N_GUARD::QAR1(C),XS(a)
      • S(a);N_GUARD::QAR1(C)
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