MESON Chess Problem Database

Problem Display
PID: 234678 (8/8/8/7K/8/6pk/5P1p/4NR2 w - - 0 1)

Lincoln, Robert A

Kudesnik, 2009

8/8/8/7K/8/6pk/5P1p/4NR2

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...h1Q
      • 2.Rxh1#
    • 1...h1S
      • 2.Rxh1#
    • 1...h1B
      • 2.Rxh1#
    • 1...h1R
      • 2.Rxh1#
  • Tries
    • 1.f3?
      • 1...h1Q
        • 2.Rxh1#
      • 1...h1S
        • 2.Rxh1#
      • 1...h1B
        • 2.Rxh1#
      • 1...h1R
        • 2.Rxh1#
      • 1...g2!
  • Keys
    • 1.f4!
      • 1...h1Q
        • 2.Rxh1#
      • 1...h1S
        • 2.Rxh1#
      • 1...h1B
        • 2.Rxh1#
      • 1...h1R
        • 2.Rxh1#
      • 1...g2
        • 2.Rf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATEB::R(B),XQ(a)
    • P(a);OGATEB::R(B),XS(a)
    • P(a);OGATEB::R(B),XB(a)
    • P(a);OGATEB::R(B),XR(a)
  • Tries
    • Try
      • P(C);
      • Vars
        • P(a);OGATEB::R(B),XQ(a)
        • P(a);OGATEB::R(B),XS(a)
        • P(a);OGATEB::R(B),XB(a)
        • P(a);OGATEB::R(B),XR(a)
      • Refutation
        • P(b);
  • Actual
    • P(C);
    • Vars
      • P(a);OGATEB::R(B),XQ(a)
      • P(a);OGATEB::R(B),XS(a)
      • P(a);OGATEB::R(B),XB(a)
      • P(a);OGATEB::R(B),XR(a)
      • P(b);OGATEB::R(B)
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