MESON Chess Problem Database

Problem Display
PID: 208738 (7k/5Brb/3n3R/2R4K/8/2B5/8/8 w - - 0 1)

Teed, Frank Melville

Dubuque Chess Journal, 1875

7k/5Brb/3n3R/2R4K/8/2B5/8/8

#2

5 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Rc8#
    • 1...Se4
      • 2.Rc8#
    • 1...Sb5
      • 2.Rc8#
    • 1...Sf5
      • 2.Rc8#
    • 1...Sc8
      • 2.Rxc8#
  • Tries
    • 1.Rc8+?
      • 1...Se8
        • 2.Rxe8#
      • 1...Sxc8!
  • Keys
    • 1.Re5!
      • 1...Rg5+
        • 2.Rxg5#
      • 1...Rxf7
        • 2.Re8#
      • 1...Sxf7
        • 2.Re8#
      • 1...Rg1
        • 2.Rg5#
        • 2.Re8#
      • 1...Rg2
        • 2.Rg5#
        • 2.Re8#
      • 1...Rg3
        • 2.Re8#
      • 1...Rg4
        • 2.Re8#
      • 1...Rg6
        • 2.Re8#
      • 1...Rg8
        • 2.Re8#
      • 1...Sb7
        • 2.Re8#
      • 1...Sc4
        • 2.Re8#
      • 1...Se4
        • 2.Re8#
      • 1...Sb5
        • 2.Re8#
      • 1...Sf5
        • 2.Re8#
      • 1...Sc8
        • 2.Re8#
      • 1...Se8
        • 2.Rxe8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 5
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::R(B)
    • S(a);N_GUARD::R(B),XS(a)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::R(B),XS(a)
      • Refutation
        • S(a);XR(B)
  • Actual
    • R(B);N_PINR(b)
    • Vars
      • R(b);CHECK,OGATEB::B(A)+R(B),XR(b)
      • R(b);XB(E)::B(A)+R(B),DCHECK
      • S(a);N_GUARD,XB(E)::R(B)
      • R(b);::B(A)+R(B),DCHECK
      • R(b);S_CUTS(a)::B(A)+R(B)
      • S(a);N_GUARD::R(B)
      • S(a);N_GUARD::R(B),XS(a)
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