MESON Chess Problem Database

Problem Display
PID: 241934 (3Q1n2/2Rp4/3k4/5P2/4K3/8/8/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1933

3Q1n2/2Rp4/3k4/5P2/4K3/8/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Se6
      • 2.Qxd7#
    • 1...Sg6
      • 2.Qxd7#
    • 1...Sh7
      • 2.Qxd7#
  • Tries
    • 1.Kd4?
      • 1...Sg6
        • 2.Qxd7#
      • 1...Sh7
        • 2.Qxd7#
      • 1...Se6+!
    • 1.Qc8?
      • 1...Se6
        • 2.Rxd7#
        • 2.Qxd7#
      • 1...Sg6
        • 2.Rxd7#
        • 2.Qxd7#
      • 1...Sh7
        • 2.Rxd7#
        • 2.Qxd7#
      • 1...Ke7!
    • 1.Qe8?
      • threat
        • 2.Qe5#
      • 1...Se6
        • 2.Qxd7#
      • 1...Sg6
        • 2.Qxd7#
      • 1...Kxc7!
  • Keys
    • 1.f6!
      • 1...Ke6
        • 2.Qe7#
      • 1...Se6
        • 2.Qxd7#
      • 1...Sg6
        • 2.Qxd7#
      • 1...Sh7
        • 2.Qxd7#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::QAR1(D),XP(b)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(c);N_GUARD::QAR1(D),XP(b)
      • Refutation
        • S(c);CHECK
    • Try
      • Q(D);N_PINP(b)
      • Refutation
        • K(a);P_SPINP(b),S_FLIGHT
    • Try
      • Q(D);N_PINP(b)
      • Threat
        • QAB1(D)
      • Vars
        • S(c);N_GUARD::QAR1(D),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
  • Actual
    • P(B);
    • Vars
      • K(a);N_SPINP(b),P-FLIGHT::QAR1(D)
      • S(c);N_GUARD::QAR1(D),XP(b)
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