MESON Chess Problem Database

Problem Display
PID: 163035 (k1K5/p7/3R4/R1p5/8/8/3b4/8 w - - 0 1)

Lincoln, Robert A

StrateGems, 2013

k1K5/p7/3R4/R1p5/8/8/3b4/8

#2

3 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...a6
      • 2.Raxa6#
      • 2.Rdxa6#
  • Tries
    • 1.Rxd2?
      • 1...a6
        • 2.Rxa6#
      • 1...c4!
    • 1.Rb6?
      • threat
        • 2.Rb8#
      • 1...a6
        • 2.Raxa6#
        • 2.Rbxa6#
      • 1...Bf4!
    • 1.Rd7?
      • threat
        • 2.Raxa7#
        • 2.Rdxa7#
      • 1...a6
        • 2.Rxa6#
      • 1...Bxa5!
  • Keys
    • 1.Rb5!
      • threat
        • 2.Rb8#
      • 1...a5
        • 2.Ra6#
      • 1...a6
        • 2.Rxa6#

FEATURES

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