MESON Chess Problem Database

Problem Display
PID: 206712 (1B6/2Pk2K1/R7/8/N1P5/8/8/8 w - - 0 1)

Beck, Gyula

Nepszava, 1925

1B6/2Pk2K1/R7/8/N1P5/8/8/8

#2

6 + 1

5454 Near Snap 2020
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Kf6?
      • 1...Ke8
        • 2.c8Q#
      • 1...Kc8!
    • 1.Sc5+?
      • 1...Ke7
        • 2.Re6#
      • 1...Ke8
        • 2.Re6#
      • 1...Kc8!
    • 1.c8Q+?
      • 1...Ke7
        • 2.Bd6#
        • 2.Re6#
        • 2.Ra7#
      • 1...Kxc8!
  • Keys
    • 1.Ra7!
      • 1...Kc6
        • 2.c8Q#
        • 2.c8R#
      • 1...Kd6
        • 2.c8Q#
      • 1...Ke6
        • 2.c8Q#
        • 2.c8B#
      • 1...Ke7
        • 2.c8Q#
      • 1...Kc8
        • 2.Sb6#
      • 1...Ke8
        • 2.c8Q#
        • 2.c8R#

Anticipated by 24364(1890)

This anticipates 87268(1989)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Vars
        • K(a);S_FLIGHT::P=Q
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);CHECK
      • Vars
        • K(a);P-FLIGHT::R1(C)
        • K(a);S_FLIGHT::R(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • P(D);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(D)
  • Actual
    • R(C);
    • Vars
      • K(a);S_FLIGHT::P=Q
      • K(a);P-FLIGHT::P=Q
      • K(a);S_FLIGHT::S(A)
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