MESON Chess Problem Database

Problem Display
PID: 241958 (8/8/8/8/Q7/1pk5/4P3/2BK4 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1933

8/8/8/8/Q7/1pk5/4P3/2BK4

#2

4 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...b2
      • 2.Bd2#
  • Tries
    • 1.Ke1?
      • 1...b2
        • 2.Bd2#
      • 1...Kc2!
    • 1.Be3?
      • threat
        • 2.Bd4#
        • 2.Qd4#
      • 1...b2
        • 2.Bd2#
        • 2.Bd4#
      • 1...Kb2!
    • 1.Qb5?
      • threat
        • 2.Qc5#
      • 1...b2
        • 2.Bxb2#
      • 1...Kd4!
    • 1.e3?
      • threat
        • 2.Qd4#
      • 1...Kd3
        • 2.Qd4#
      • 1...b2!
  • Keys
    • 1.Ba3!
      • 1...b2
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(a);SBLOCK::B(A)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(a);SBLOCK::B(A)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(a)
    • Try
      • B(A);
      • Threat
        • DUALS(2)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(D);
      • Threat
        • QAR2(D)
      • Vars
        • P(a);::B(A),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(C);
      • Threat
        • QAB1(D)
      • Vars
        • K(b);P-FLIGHT::QAR1(D)
      • Refutation
        • P(a);
  • Actual
    • B(A);
    • Vars
      • P(a);::QAB1(D)
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