MESON Chess Problem Database

Problem Display
PID: 241914 (8/2Q1N3/8/7N/3k4/4p3/4K3/8 w - - 0 1)

Szentgyorgy, Erno

Magyar Sakkvilag, 1933

8/2Q1N3/8/7N/3k4/4p3/4K3/8

#2

4 + 2

15148 Sadier Collection 2021
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qf4#
  • Tries
    • 1.Sg6?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kd5!
    • 1.Qa5?
      • 1...Ke4
        • 2.Qd5#
      • 1...Kc4!
    • 1.Qc1?
      • 1...Ke4
        • 2.Qxe3#
      • 1...Ke5!
    • 1.Qc3+?
      • 1...Ke4
        • 2.Qxe3#
      • 1...Kxc3!
    • 1.Qc4+?
      • 1...Ke5
        • 2.Qd5#
      • 1...Kxc4!
    • 1.Qc5+?
      • 1...Ke4
        • 2.Qxe3#
        • 2.Qd5#
      • 1...Kxc5!
  • Keys
    • 1.Qc6!
      • 1...Ke5
        • 2.Qd5#

Anticipated by 227466(1926), 241756(1928)

This anticipates 241973(1933), 242051(1936)

FEATURES

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