MESON Chess Problem Database

Problem Display
PID: 212977 (8/3Q4/5P2/1K2k3/4B3/5P2/5P2/8 w - - 0 1)

Breuer, Joseph Theodor

Deutsche Schachzeitung, 1974

8/3Q4/5P2/1K2k3/4B3/5P2/5P2/8

#2

6 + 1

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Qf5#
  • Tries
    • 1.Ka4?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kxf6!
    • 1.Kb4?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kxf6!
    • 1.Kc4?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kxf6!
    • 1.Ka5?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kxf6!
    • 1.Kc5?
      • threat
        • 2.Qf5#
        • 2.Qd6#
      • 1...Kf4
        • 2.Qf5#
      • 1...Kxf6!
    • 1.Ka6?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kxf6!
    • 1.Kb6?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kxf6!
    • 1.Kc6?
      • threat
        • 2.Qd6#
      • 1...Kf4
        • 2.Qf5#
      • 1...Kxf6!
    • 1.Bb1?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kxf6!
    • 1.Bc2?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kxf6!
    • 1.Bd3?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kxf6!
    • 1.Bg6?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kxf6!
    • 1.Bh7?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kxf6!
    • 1.Qf5+?
      • 1...Kd4
        • 2.Qc5#
      • 1...Kd6!
    • 1.Qc6?
      • 1...Kd4
        • 2.Qc5#
      • 1...Kf4!
    • 1.Qd5+?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kxf6!
    • 1.Qc7+?
      • 1...Kd4
        • 2.Qc5#
      • 1...Ke6
        • 2.Qe7#
      • 1...Kxf6!
    • 1.Qe7+?
      • 1...Kd4
        • 2.Qc5#
      • 1...Kf4!
    • 1.Qd8?
      • 1...Ke6
        • 2.Qe7#
      • 1...Kf4!
    • 1.f7?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kf6!
  • Keys
    • 1.Qg7!
      • 1...Kd4
        • 2.f7#
      • 1...Kf4
        • 2.Qg3#
      • 1...Kd6
        • 2.Qe7#
      • 1...Ke6
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(F)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • K(D);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • K(D);S_FLIGHT
      • Threat
        • QAB1(F)
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • B(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • B(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • B(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • B(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • B(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT,XP(E)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);P-FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(E);
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(a);S_FLIGHT::QAB(F)+P(E)
      • K(a);S_FLIGHT::QAB1(F)
      • K(a);P-FLIGHT::QAR1(F)
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