MESON Chess Problem Database

Problem Display
PID: 96399 (K2B4/8/8/8/8/7k/4p3/2Q4B w - - 0 1)

Froberg, Johan Hilding Laurentius

Problemnoter, 1962

K2B4/8/8/8/8/7k/4p3/2Q4B

#2

4 + 2

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qa3+?
      • 1...Kg4
        • 2.Qf3#
      • 1...Kh2!
    • 1.Qe3+?
      • 1...Kg4
        • 2.Qf3#
      • 1...Kh2!
    • 1.Qh6+?
      • 1...Kg3
        • 2.Qh4#
      • 1...Kg4!
    • 1.Qc3+?
      • 1...Kg4
        • 2.Qf3#
      • 1...Kh2!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Qh4#
        • 2.Qg2#
      • 1...Kh2
        • 2.Qg2#
      • 1...e1Q
        • 2.Qg2#
      • 1...e1S
        • 2.Qh4#
      • 1...e1B
        • 2.Qg2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);P-FLIGHT::QAR1(A)
      • P(a);::QAB1(A)
      • P(a);::QAR1(A)
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