MESON Chess Problem Database

Problem Display
PID: 227780 (8/1R6/8/kP6/2K5/8/8/8 w - - 0 1)

Schonberger, Tibor

Magyar Sakkvilag, 1926

8/1R6/8/kP6/2K5/8/8/8

#2

3 + 1

6490 yacpdb 2020
5454 Near Snap 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Ka4
      • 2.Ra7#
  • Tries
    • 1.Rb6?
      • threat
        • 2.Ra6#
      • 1...Ka4
        • 2.Ra6#
      • 1...Kxb6!
    • 1.Rc7?
      • 1...Ka4
        • 2.Ra7#
      • 1...Kb6!
    • 1.Rd7?
      • 1...Ka4
        • 2.Ra7#
      • 1...Kb6!
    • 1.Re7?
      • 1...Ka4
        • 2.Ra7#
      • 1...Kb6!
    • 1.Rf7?
      • 1...Ka4
        • 2.Ra7#
      • 1...Kb6!
    • 1.Rg7?
      • 1...Ka4
        • 2.Ra7#
      • 1...Kb6!
    • 1.Rh7?
      • 1...Ka4
        • 2.Ra7#
      • 1...Kb6!
    • 1.b6?
      • 1...Ka4
        • 2.Ra7#
      • 1...Ka6!
  • Keys
    • 1.Rb8!
      • 1...Ka4
        • 2.Ra8#

This anticipates 249379(1968)

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::R(C)
  • Tries
    • Try
      • R(C);
      • Threat
        • R1(C)
      • Vars
        • K(a);P-FLIGHT::R(C)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT::R(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT::R(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT::R(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT::R(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT::R(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(C);
      • Vars
        • K(a);P-FLIGHT::R(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(B);
      • Vars
        • K(a);P-FLIGHT::R(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • R(C);
    • Vars
      • K(a);P-FLIGHT::R(C)
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