MESON Chess Problem Database

Problem Display
PID: 38005 (k7/p1K5/2R5/8/4R3/8/2n5/4r3 w - - 0 1)

Lincoln, Robert A

Smena, 1995

k7/p1K5/2R5/8/4R3/8/2n5/4r3

#2

3 + 4

2786 More Fun with Chess Miniatures 2000

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Re8#
    • 1...Rc1
      • 2.Re8#
    • 1...Rf1
      • 2.Re8#
    • 1...Rg1
      • 2.Re8#
    • 1...Rh1
      • 2.Re8#
    • 1...Se3
      • 2.Re8#
    • 1...a5
      • 2.Ra6#
    • 1...a6
      • 2.Rxa6#
  • Tries
    • 1.Rd6?
      • threat
        • 2.Rd8#
      • 1...a5
        • 2.Ra6#
      • 1...a6
        • 2.Rxa6#
      • 1...Rd1
        • 2.Re8#
      • 1...Rb1!
  • Keys
    • 1.Rb6!
      • threat
        • 2.Rb8#
      • 1...axb6
        • 2.Ra4#
      • 1...a5
        • 2.Ra6#
      • 1...a6
        • 2.Rxa6#
      • 1...Rb1
        • 2.Re8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(a);N_GUARD::R(A)
    • S(b);S_CUTR(a)::R(A)
    • P(c);OGATEB::R(B)
    • P(c);OGATEB::R(B),XP(c)
  • Tries
    • Try
      • R(B);
      • Threat
        • R(B)
      • Vars
        • P(c);OGATEB::R(B)
        • P(c);OGATEB::R(B),XP(c)
        • R(a);N_GUARD::R(A)
      • Refutation
        • R(a);
  • Actual
    • R(B);
    • Threat
      • R1(B)
    • Vars
      • P(c);OGATEB,XR(B)::R(A)
      • P(c);OGATEB::R(B)
      • P(c);OGATEB::R(B),XP(c)
      • R(a);N_GUARD::R(A)
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