MESON Chess Problem Database

Problem Display
PID: 205509 (4B3/8/2N1k2K/4P2P/3R4/8/8/8 w - - 0 1)

Beck, Gyula

Source?, 1925

4B3/8/2N1k2K/4P2P/3R4/8/8/8

#2

6 + 1

6490 yacpdb 2020
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Bd7#
  • Tries
    • 1.Ra4?
      • 1...Kf5
        • 2.Bd7#
      • 1...Kd5!
    • 1.Rb4?
      • 1...Kf5
        • 2.Bd7#
      • 1...Kd5!
    • 1.Rg4?
      • 1...Kf5
        • 2.Bd7#
      • 1...Kd5!
    • 1.Rh4?
      • 1...Kf5
        • 2.Bd7#
      • 1...Kd5!
  • Keys
    • 1.Rc4!
      • 1...Kd5
        • 2.Bf7#
      • 1...Kf5
        • 2.Bd7#

Anticipated by 181779(1910), 201343(1922)

This anticipates 176177(1962), 230406(1973), 136399(1981/5), 222223(1982), 232139(2001)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::B(F)
  • Tries
    • Try
      • R(A);
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • K(a);S_FLIGHT::B(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(A);
    • Vars
      • K(a);S_FLIGHT::B(F)
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