MESON Chess Problem Database

Problem Display
PID: 231093 (8/8/P1k1P3/Qp2P3/3K4/8/8/8 w - - 0 1)

Ballo, Gyorgy

Magyar Sakkvilag, 1927

8/8/P1k1P3/Qp2P3/3K4/8/8/8

#2

5 + 2

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...b4
      • 2.Qc5#
  • Tries
    • 1.e7?
      • threat
        • 2.e8Q#
        • 2.e8B#
      • 1...b4
        • 2.e8Q#
        • 2.e8B#
      • 1...Kd7!
  • Keys
    • 1.a7!
      • threat
        • 2.a8Q#
        • 2.a8B#
      • 1...Kb7
        • 2.a8Q#
      • 1...b4
        • 2.a8Q#
        • 2.a8B#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(a);OGATE::QAR1(B)
  • Tries
    • Try
      • P(E);
      • Threat
        • P=Q
      • Vars
        • P(a);::P=Q
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • P(D);
    • Threat
      • P=Q
    • Vars
      • K(b);S_FLIGHT::P=Q
      • P(a);::P=Q
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