MESON Chess Problem Database

Problem Display
PID: 234754 (k7/3b4/pK6/1R2B3/B7/8/8/8 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2015

k7/3b4/pK6/1R2B3/B7/8/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...a5
      • 2.Rxa5#
  • Tries
    • 1.Rd5?
      • 1...Bxa4
        • 2.Rd8#
      • 1...Bb5
        • 2.Rd8#
      • 1...Bh3
        • 2.Bc6#
      • 1...Bg4
        • 2.Bc6#
      • 1...Bf5
        • 2.Bc6#
      • 1...Bc6
        • 2.Bxc6#
        • 2.Rd8#
      • 1...Be6
        • 2.Bc6#
      • 1...Be8
        • 2.Rd8#
      • 1...a5
        • 2.Rxa5#
      • 1...Bc8!
  • Keys
    • 1.Rc5!
      • 1...Bxa4
        • 2.Rc8#
      • 1...Bb5
        • 2.Rc8#
      • 1...Bh3
        • 2.Bc6#
      • 1...Bg4
        • 2.Bc6#
      • 1...Bf5
        • 2.Bc6#
      • 1...Bc6
        • 2.Bxc6#
      • 1...Be6
        • 2.Bc6#
      • 1...Bc8
        • 2.Rxc8#
      • 1...Be8
        • 2.Rc8#
      • 1...a5
        • 2.Rxa5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATEB::R(B),XP(a)
  • Tries
    • Try
      • R(B);
      • Vars
        • B(b);OGATE,XB(A)::R(B)
        • B(b);OGATE::R(B)
        • B(b);N_GUARD::B(A)
        • P(a);OGATEB::R(B),XP(a)
      • Refutation
        • B(b);
  • Actual
    • R(B);
    • Vars
      • B(b);N_GUARD,XB(A)::R(B)
      • B(b);N_GUARD::R(B)
      • B(b);N_GUARD::B(A)
      • B(b);N_GUARD::B(A),XB(b)
      • B(b);N_GUARD::R(B),XB(b)
      • P(a);OGATEB::R(B),XP(a)
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