MESON Chess Problem Database

Problem Display
PID: 241843 (8/5Q2/8/N3p3/4k1N1/2p5/2K5/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1930

8/5Q2/8/N3p3/4k1N1/2p5/2K5/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qc4#
  • Tries
    • 1.Kc1?
      • 1...Kd3
        • 2.Qc4#
      • 1...Kd4
        • 2.Qc4#
      • 1...c2!
    • 1.Kd1?
      • 1...Kd3
        • 2.Qc4#
        • 2.Qd5#
      • 1...Kd4
        • 2.Qc4#
      • 1...c2+!
    • 1.Qf1?
      • 1...Kd4
        • 2.Qc4#
      • 1...Kd5!
    • 1.Qf5+?
      • 1...Kd4
        • 2.Qxe5#
      • 1...Kd5
        • 2.Qxe5#
      • 1...Kxf5!
  • Keys
    • 1.Qf6!
      • 1...Kd4
        • 2.Qxe5#
      • 1...Kd5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR1(D)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAB1(D)
        • K(b);P-FLIGHT::QAR1(D)
      • Refutation
        • P(a);
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAR1(D)
      • Refutation
        • P(a);CHECK
    • Try
      • Q(D);
      • Vars
        • K(b);P-FLIGHT::QAR1(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);P-FLIGHT::QAB1(D),XP(c)
        • K(b);P_SPINP(c),S_FLIGHT::QAR1(D),XP(c)
      • Refutation
        • K(b);S_FLIGHT,XQ(D)
  • Actual
    • Q(D);
    • Vars
      • K(b);P-FLIGHT,P_SPINP(c)::QAB1(D),XP(c)
      • K(b);S_FLIGHT::QAR1(D),XP(c)
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