MESON Chess Problem Database

Problem Display
PID: 227294 (3K4/4N3/1Q6/2N1k3/8/8/8/6R1 w - - 0 1)

Kardos, Tivadar

Deutsche Schachzeitung, 1986

3K4/4N3/1Q6/2N1k3/8/8/8/6R1

#2

5 + 1

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Re1+?
      • 1...Kd4
        • 2.Qb4#
      • 1...Kf4!
    • 1.Rg3?
      • 1...Kf4
        • 2.Qc7#
        • 2.Qd6#
        • 2.Qb8#
      • 1...Kd4!
    • 1.Qc7+?
      • 1...Kf6
        • 2.Qf4#
      • 1...Kd4!
    • 1.Qb2+?
      • 1...Kd6
        • 2.Qd4#
      • 1...Kf4!
    • 1.Qb3?
      • 1...Kf4
        • 2.Qg3#
      • 1...Kd6
        • 2.Qd5#
      • 1...Kf6
        • 2.Sd7#
        • 2.Qe6#
      • 1...Kd4!
    • 1.Qc6?
      • 1...Kf4
        • 2.Qe4#
      • 1...Kd4!
    • 1.Qe6+?
      • 1...Kf4
        • 2.Qe4#
      • 1...Kd4!
    • 1.Qg6?
      • 1...Kf4
        • 2.Qe4#
        • 2.Qg3#
      • 1...Kd4!
    • 1.Qb8+?
      • 1...Kf6
        • 2.Qf4#
      • 1...Kd4!
  • Keys
    • 1.Qb4!
      • 1...Kd6
        • 2.Qd4#
      • 1...Kf6
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR2(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR2(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR2(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(a);S_FLIGHT::QAR2(C)
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