MESON Chess Problem Database

Problem Display
PID: 227914 (8/8/3p4/3Q4/k7/P7/p1P5/K7 w - - 0 1)

Ballo, Gyorgy

Magyar Sakkvilag, 1926

8/8/3p4/3Q4/k7/P7/p1P5/K7

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxa3
      • 2.Qb3#
      • 2.Qa5#
  • Tries
    • 1.Qc4+?
      • 1...Kxa3
        • 2.Qb3#
      • 1...Ka5!
    • 1.Qb7?
      • threat
        • 2.Qa6#
        • 2.Qb4#
      • 1...Kxa3
        • 2.Qb3#
      • 1...Ka5!
    • 1.Qd2?
      • threat
        • 2.Qb4#
      • 1...Kxa3
        • 2.Qa5#
      • 1...Kb5!
    • 1.Qb5+?
      • 1...Kxa3
        • 2.Qb3#
        • 2.Qa5#
      • 1...Kxb5!
    • 1.Qf5?
      • 1...Kxa3
        • 2.Qa5#
      • 1...d5!
    • 1.Qg5?
      • 1...Kxa3
        • 2.Qa5#
      • 1...d5!
    • 1.Qh5?
      • 1...Kxa3
        • 2.Qa5#
      • 1...d5!
  • Keys
    • 1.c3!
      • 1...Kxa3
        • 2.Qxa2#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(C)::QAR1(D)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT,XP(C)::QAR1(D)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(D);
      • Threat
        • QAR1(D)
      • Vars
        • K(b);P-FLIGHT,XP(C)::QAR2(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Refutation
        • K(b);S_FLIGHT,XQ(D)
    • Try
      • Q(D);
      • Vars
        • K(b);P-FLIGHT,XP(C)::QAR2(D)
      • Refutation
        • P(c);
    • Try
      • Q(D);
      • Vars
        • K(b);P-FLIGHT,XP(C)::QAR2(D)
      • Refutation
        • P(c);
    • Try
      • Q(D);
      • Vars
        • K(b);P-FLIGHT,XP(C)::QAR2(D)
      • Refutation
        • P(c);
  • Actual
    • P(B);
    • Vars
      • K(b);OGATEB,P-FLIGHT,XP(C)::QAR1(D),XP(a)
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