MESON Chess Problem Database

Problem Display
PID: 18136 (8/rpB4K/p1k1P3/2pNP3/4Q3/8/8/8 w - - 0 1)

Brotherton, David WA

Time & Tide, 1953

8/rpB4K/p1k1P3/2pNP3/4Q3/8/8/8

#2

6 + 5

5454 Near Snap 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kb5
      • 2.Sc3#
    • 1...c4
      • 2.Qxc4#
  • Tries
    • 1.Sb6+?
      • 1...Kb5
        • 2.Qa4#
      • 1...Kxc7!
  • Keys
    • 1.Bd8!
      • threat
        • 2.Sc3#
      • 1...b5+
        • 2.Se7#
      • 1...b6+
        • 2.Sc7#
      • 1...Kb5
        • 2.Sc3#
      • 1...c4
        • 2.Qxc4#

Anticipated by 196830(1919)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::S(B)
    • P(a);OGATEB::QAR2(A),XP(a)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(A)
      • Refutation
        • K(c);P-FLIGHT,XB(E)
  • Actual
    • B(E);
    • Threat
      • QAB(A)+S(B)
    • Vars
      • P(e);CHECK,SBLOCK::QAB(A)+S(B),DCHECK
      • P(e);CHECK,SBLOCK::QAB(A)+S(B)
      • K(c);S_FLIGHT::S(B)
      • P(a);OGATEB::QAR2(A),XP(a)
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