MESON Chess Problem Database

Problem Display
PID: 166352 (k6K/2Q5/8/1P6/r2n4/8/8/6B1 w - - 0 1)

Lincoln, Robert A

StrateGems, 2016

k6K/2Q5/8/1P6/r2n4/8/8/6B1

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Ra7
      • 2.Qc8#
    • 1...Sc2
      • 2.Qc8#
    • 1...Se2
      • 2.Qc8#
    • 1...Sb3
      • 2.Qc8#
    • 1...Sf3
      • 2.Qc8#
    • 1...Sxb5
      • 2.Qc8#
    • 1...Sf5
      • 2.Qc8#
    • 1...Se6
      • 2.Qc8#
  • Tries
    • 1.Bxd4?
      • threat
        • 2.Qc8#
      • 1...Rc4
        • 2.Qa7#
      • 1...Rxd4!
  • Keys
    • 1.b6!
      • threat
        • 2.Qc8#
      • 1...Rc4
        • 2.Qa7#
      • 1...Sc6
        • 2.b7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(a);SBLOCK::QAR2(C)
    • S(b);::QAR2(C)
    • S(b);XP(B)::QAR2(C)
  • Tries
    • Try
      • B(A);XS(b)
      • Threat
        • QAR2(C)
      • Vars
        • R(a);N_GUARD::QAR1(C)
      • Refutation
        • R(a);XB(A)
  • Actual
    • P(B);
    • Threat
      • QAR2(C)
    • Vars
      • R(a);N_GUARD::QAR1(C)
      • S(b);::P(B)
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