MESON Chess Problem Database

Problem Display
PID: 169252 (6Q1/8/8/8/7K/8/6Rp/5b1k w - - 0 1)

Lincoln, Robert A

SuperProblem, 2017

6Q1/8/8/8/7K/8/6Rp/5b1k

#2

3 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Rf2?
      • threat
        • 2.Rxf1#
      • 1...Bg2
        • 2.Qxg2#
      • 1...Be2
        • 2.Qg2#
      • 1...Bd3
        • 2.Qg2#
      • 1...Bc4
        • 2.Qg2#
      • 1...Bb5
        • 2.Qg2#
      • 1...Ba6
        • 2.Qg2#
      • 1...Bh3!
  • Keys
    • 1.Kh3!
      • 1...Bxg2+
        • 2.Qxg2#
      • 1...Be2
        • 2.Rxh2#
      • 1...Bd3
        • 2.Rxh2#
      • 1...Bc4
        • 2.Rxh2#
      • 1...Bb5
        • 2.Rxh2#
      • 1...Ba6
        • 2.Rxh2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Threat
        • R(A),XB(a)
      • Vars
        • B(a);N_GUARD::QAB1(C),XB(a)
        • B(a);N_GUARD::QAB1(C)
      • Refutation
        • B(a);
  • Actual
    • K(B);P-FLIGHT,P_SPINR(A)
    • Vars
      • B(a);CHECK,OGATE,XR(A)::QAB1(C),XB(a)
      • B(a);N_PINR(A)::R1(A),XP(c)
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