MESON Chess Problem Database

Problem Display
PID: 227675 (8/2k5/8/K5B1/6Q1/8/6B1/8 w - - 0 1)

Singer, Max

Arbeiter Shachzeitung (Chemnitz), 1926

8/2k5/8/K5B1/6Q1/8/6B1/8

#2

4 + 1

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Ka6?
      • 1...Kb8
        • 2.Bf4#
      • 1...Kd6!
    • 1.Qd1?
      • threat
        • 2.Qd8#
      • 1...Kc8
        • 2.Qd8#
      • 1...Kb8!
    • 1.Qf3?
      • 1...Kd7
        • 2.Qc6#
      • 1...Kb8
        • 2.Qb7#
      • 1...Kc8
        • 2.Qb7#
      • 1...Kd6!
    • 1.Qd7+?
      • 1...Kb8
        • 2.Bf4#
        • 2.Qb7#
      • 1...Kxd7!
    • 1.Qb4?
      • 1...Kc8
        • 2.Qb7#
      • 1...Kd7!
    • 1.Qd4?
      • threat
        • 2.Qd8#
      • 1...Kc8
        • 2.Qd8#
      • 1...Kb8!
  • Keys
    • 1.Qe4!
      • 1...Kd6
        • 2.Qe7#
      • 1...Kd7
        • 2.Qc6#
      • 1...Kb8
        • 2.Qb7#
      • 1...Kc8
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(D)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
        • K(a);S_FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(B)
    • Try
      • Q(B);
      • Vars
        • K(a);P-FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);P-FLIGHT::QAB1(B)
      • K(a);S_FLIGHT::QAR1(B)
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