MESON Chess Problem Database

Problem Display
PID: 227891 (8/8/8/4p1p1/4Q3/7k/5Pp1/6K1 w - - 0 1)

Ballo, Gyorgy

Magyar Sakkvilag, 1926

8/8/8/4p1p1/4Q3/7k/5Pp1/6K1

#2

3 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...g4
      • 2.Qh7#
  • Tries
    • 1.Qf5+?
      • 1...g4
        • 2.Qh7#
        • 2.Qh5#
      • 1...Kh4!
  • Keys
    • 1.f3!
      • threat
        • 2.Qg4#
      • 1...Kg3
        • 2.Qg4#
      • 1...g4
        • 2.Qxg4#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(d);SBLOCK::QAR(C)
  • Tries
    • Try
      • Q(C);CHECK
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • P(B);
    • Threat
      • QAB1(C)
    • Vars
      • K(b);P-FLIGHT::QAR1(C)
      • P(d);::QAB1(C),XP(d)
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