MESON Chess Problem Database

Problem Display
PID: 45963 (B1k1K3/8/N7/7R/3b4/2N5/8/8 w - - 0 1)

Lincoln, Robert A

Still More Fun with Chess Miniatures, 2002

B1k1K3/8/N7/7R/3b4/2N5/8/8

#2

5 + 2

145 StrateGems 2009
136 Problem Observer 2018
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc3
      • 2.Rc5#
    • 1...Bc5
      • 2.Rxc5#
    • 1...Bf6
      • 2.Rc5#
    • 1...Bg7
      • 2.Rc5#
    • 1...Bh8
      • 2.Rc5#
  • Tries
    • 1.Se4?
      • threat
        • 2.Sd6#
      • 1...Bc5
        • 2.Rxc5#
      • 1...Be5!
    • 1.Sd5?
      • threat
        • 2.Se7#
      • 1...Bf6
        • 2.Sb6#
      • 1...Bc5!
    • 1.Rb5?
      • threat
        • 2.Bb7#
        • 2.Rb8#
      • 1...Be5
        • 2.Bb7#
      • 1...Ba7
        • 2.Bb7#
      • 1...Bb6!
    • 1.Rd5?
      • threat
        • 2.Rd8#
      • 1...Bf6
        • 2.Rc5#
      • 1...Bb6!
    • 1.Rh7?
      • threat
        • 2.Bb7#
        • 2.Rc7#
      • 1...Be5
        • 2.Bb7#
      • 1...Bb6
        • 2.Bb7#
      • 1...Bg7!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sd6#
      • 1...Bc5
        • 2.Rxc5#
      • 1...Be5
        • 2.Sa7#

This anticipates 238581(2016)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD,XS(A)::R(B)
    • B(a);N_GUARD::R(B),XB(a)
    • B(a);N_GUARD::R(B)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • B(a);N_GUARD::R(B),XB(a)
      • Refutation
        • B(a);
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • B(a);N_GUARD::S(A)
      • Refutation
        • B(a);
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::B(D)
      • Refutation
        • B(a);
    • Try
      • R(B);
      • Threat
        • R1(B)
      • Vars
        • B(a);N_GUARD::R(B)
      • Refutation
        • B(a);
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::B(D)
      • Refutation
        • B(a);
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • B(a);N_GUARD::R(B),XB(a)
      • B(a);N_GUARD::S(A)
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