MESON Chess Problem Database

Problem Display
PID: 17214 (8/5Q2/8/3p2kB/3P3p/7K/8/8 w - - 0 1)

Schonberger, Tibor

1st Prize, Le Soleil de Marseille TT, 1925-1926

8/5Q2/8/3p2kB/3P3p/7K/8/8

#2

4 + 3

273 Mat Plus 1995
5454 Near Snap 2007
133 The Problemist Supplement 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kh6
      • 2.Qg6#
  • Tries
    • 1.Kg2?
      • 1...Kh6
        • 2.Qg6#
      • 1...h3+!
    • 1.Kh2?
      • 1...Kh6
        • 2.Qg6#
      • 1...h3!
    • 1.Qxd5+?
      • 1...Kf4
        • 2.Qe5#
      • 1...Kf6
        • 2.Qe5#
      • 1...Kh6!
    • 1.Qe6?
      • 1...Kf4
        • 2.Qe5#
      • 1...Kxh5!
    • 1.Qf5+?
      • 1...Kh6
        • 2.Qg6#
      • 1...Kxf5!
    • 1.Qg7+?
      • 1...Kf4
        • 2.Qe5#
      • 1...Kf5
        • 2.Qe5#
      • 1...Kxh5!
  • Keys
    • 1.Qe8!
      • 1...Kf4
        • 2.Qe5#
      • 1...Kf5
        • 2.Qe5#
      • 1...Kf6
        • 2.Qe5#
      • 1...Kh6
        • 2.Qg6#

Anticipated by 2160(0000), 115455(1911)

This anticipates 5988(1926), 227834(1926)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAR1(D)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(c);S_FLIGHT::QAR1(D)
      • Refutation
        • P(a);CHECK
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(c);S_FLIGHT::QAR1(D)
      • Refutation
        • P(a);
    • Try
      • Q(D);CHECK,XP(b)
      • Vars
        • K(c);S_FLIGHT::QAB1(D)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(c);S_FLIGHT::QAB1(D)
      • Refutation
        • K(c);P-FLIGHT,XB(C)
    • Try
      • Q(D);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(D)
      • Refutation
        • K(c);P-FLIGHT,XQ(D)
    • Try
      • Q(D);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(D)
        • K(c);P-FLIGHT::QAR1(D)
      • Refutation
        • K(c);P-FLIGHT,XB(C)
  • Actual
    • Q(D);
    • Vars
      • K(c);S_FLIGHT::QAB1(D)
      • K(c);P-FLIGHT::QAR1(D)
      • K(c);S_FLIGHT::QAR1(D)
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