MESON Chess Problem Database

Problem Display
PID: 46444 (3B4/1k6/2N5/3R4/3K4/1B6/8/8 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

3B4/1k6/2N5/3R4/3K4/1B6/8/8

#2

5 + 1

5454 Near Snap 2010
145 StrateGems 2016
56 The Problemist 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Rb5+?
      • 1...Ka6
        • 2.Rb6#
      • 1...Ka8
        • 2.Rb8#
      • 1...Kc8
        • 2.Be6#
      • 1...Kxc6!
  • Keys
    • 1.Rd7+!
      • 1...Ka6
        • 2.Bc4#
      • 1...Kxc6
        • 2.Ba4#
      • 1...Ka8
        • 2.Ra7#
      • 1...Kc8
        • 2.Rc7#

Anticipated by 91454(1984)

This anticipates 244511(2013)

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(a);S_FLIGHT::R1(C)
        • K(a);OGATE,S_FLIGHT::R1(C)
        • K(a);S_FLIGHT::B(A)
      • Refutation
        • K(a);S_FLIGHT,XS(D)
  • Actual
    • R(C);CHECK
    • Vars
      • K(a);S_FLIGHT::B(A)
      • K(a);S_FLIGHT,XS(D)::B(A)
      • K(a);OGATE,S_FLIGHT::R1(C)
      • K(a);S_FLIGHT::R1(C)
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