MESON Chess Problem Database

Problem Display
PID: 22337 (k7/P7/K7/6b1/8/2NR4/8/8 w - - 0 1)

Lincoln, Robert A

Comm., The Problemist, 1994

k7/P7/K7/6b1/8/2NR4/8/8

#2

4 + 2

2786 More Fun with Chess Miniatures 2000
145 StrateGems 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Bc1
      • 2.Rd8#
    • 1...Bd2
      • 2.Rd8#
    • 1...Be3
      • 2.Rd8#
    • 1...Bh6
      • 2.Rd8#
    • 1...Bd8
      • 2.Rxd8#
  • Tries
    • 1.Sb5?
      • threat
        • 2.Sc7#
      • 1...Bd8
        • 2.Rxd8#
      • 1...Bf4!
    • 1.Sd5?
      • threat
        • 2.Sb6#
        • 2.Sc7#
      • 1...Bf4
        • 2.Sb6#
      • 1...Be3
        • 2.Sc7#
      • 1...Bd8!
  • Keys
    • 1.Sa4!
      • threat
        • 2.Sb6#
      • 1...Be3
        • 2.Rd8#
      • 1...Bd8
        • 2.Rxd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 3
  • Sets
    • B(a);N_GUARD::R(B)
    • B(a);N_GUARD,SBLOCK::R(B)
    • B(a);N_GUARD::R(B),XB(a)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • B(a);N_GUARD::R(B),XB(a)
      • Refutation
        • B(a);
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(a);::S(A)
      • Refutation
        • B(a);
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • B(a);N_GUARD::R(B)
      • B(a);N_GUARD::R(B),XB(a)
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