MESON Chess Problem Database

Problem Display
PID: 227895 (8/p7/K7/8/kp6/Pp6/1Q6/8 w - - 0 1)

Ballo, Gyorgy

Magyar Sakkvilag, 1926

8/p7/K7/8/kp6/Pp6/1Q6/8

#2

3 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...bxa3
      • 2.Qd4#
  • Tries
    • 1.Qa1?
      • 1...bxa3
        • 2.Qd4#
      • 1...b2!
    • 1.Qc1?
      • 1...bxa3
        • 2.Qf4#
        • 2.Qc4#
      • 1...b2!
    • 1.Qc3?
      • threat
        • 2.Qxb4#
      • 1...Kxa3
        • 2.Qa1#
      • 1...bxa3
        • 2.Qd4#
        • 2.Qa5#
        • 2.Qc4#
      • 1...bxc3!
    • 1.Qe5?
      • threat
        • 2.Qa5#
      • 1...Kxa3
        • 2.Qa1#
      • 1...b2!
    • 1.Qf6?
      • 1...Kxa3
        • 2.Qa1#
      • 1...bxa3
        • 2.Qd4#
        • 2.Qh4#
        • 2.Qf4#
      • 1...b2!
    • 1.Qg7?
      • 1...Kxa3
        • 2.Qa1#
      • 1...bxa3
        • 2.Qd4#
        • 2.Qg4#
      • 1...b2!
    • 1.Qh8?
      • 1...Kxa3
        • 2.Qa1#
      • 1...bxa3
        • 2.Qd4#
        • 2.Qh4#
      • 1...b2!
    • 1.Qb1?
      • 1...Kxa3
        • 2.Qa1#
      • 1...bxa3
        • 2.Qe4#
      • 1...b2!
    • 1.Qd2?
      • threat
        • 2.Qxb4#
      • 1...bxa3
        • 2.Qf4#
        • 2.Qa5#
        • 2.Qd4#
      • 1...Kxa3!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Qxb4#
      • 1...Kxa3
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATEB,SBLOCK,XP(B)::QAR(A)
  • Tries
    • Try
      • Q(A);
      • Vars
        • P(c);OGATEB,P_SPINP(c),SBLOCK,XP(B)::QAR(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • K(b);OGATEB,P-FLIGHT,P_SPINP(a),XP(B)::QAR2(A)
      • Refutation
        • P(c);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(b);OGATEB,P-FLIGHT,XP(B)::QAR2(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(b);OGATEB,P-FLIGHT,XP(B)::QAR2(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(b);OGATEB,P-FLIGHT,XP(B)::QAR2(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(b);OGATEB,P-FLIGHT,XP(B)::QAR2(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(b);OGATEB,P-FLIGHT,XP(B)::QAR2(A)
        • P(c);OGATEB,SBLOCK,XP(B)::QAR(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(c)
      • Refutation
        • K(b);P-FLIGHT,XP(B)
  • Actual
    • Q(A);P_PINP(c)
    • Threat
      • QAR1(A),XP(c)
    • Vars
      • K(b);N_SPINP(c),OGATEB,P-FLIGHT,XP(B)::QAR2(A)
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