MESON Chess Problem Database

Problem Display
PID: 202873 (8/2p5/2K5/k7/8/P1p5/2Q5/8 w - - 0 1)

Ballo, Gyorgy

Magyar Sakkvilag, 1926

8/2p5/2K5/k7/8/P1p5/2Q5/8

#2

3 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ka6
      • 2.Qa4#
  • Tries
    • 1.Kxc7?
      • 1...Ka6
        • 2.Qa4#
      • 1...Kb5!
    • 1.Qb1?
      • threat
        • 2.Qb5#
      • 1...Ka4
        • 2.Qb4#
      • 1...Ka6!
    • 1.Qd1?
      • 1...Ka6
        • 2.Qa4#
      • 1...c2!
    • 1.Qe4?
      • 1...Ka6
        • 2.Qa4#
      • 1...c2!
    • 1.Qxc3+?
      • 1...Ka4
        • 2.Qb4#
      • 1...Ka6!
  • Keys
    • 1.Qb3!
      • threat
        • 2.Qb5#
      • 1...Ka6
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR2(A)
  • Tries
    • Try
      • K(C);P-FLIGHT,XP(c)
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);CHECK,XP(a)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(b);P-FLIGHT::QAR2(A)
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