MESON Chess Problem Database

Problem Display
PID: 77394 (q7/B1p5/2k5/pRNR4/2K5/8/8/8 w - - 0 1)

Butwillo, Brother

The Tablet, 1951

(First published on Sat Apr 14 1951)

q7/B1p5/2k5/pRNR4/2K5/8/8/8

#2

5 + 4

15239 Valois Notebooks 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Sb3?
      • threat
        • 2.Sd4#
        • 2.Sxa5#
      • 1...Qh8
        • 2.Sxa5#
      • 1...a4
        • 2.Sd4#
        • 2.Sa5#
      • 1...Qxa7!
    • 1.Se6?
      • threat
        • 2.Sd4#
      • 1...Qxa7
        • 2.Sd8#
      • 1...Qh8!
  • Keys
    • 1.Sb7!
      • threat
        • 2.Sxa5#
      • 1...Qxb7
        • 2.Rbc5#
      • 1...Qxa7
        • 2.Sd8#
      • 1...a4
        • 2.Sa5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(d);::S(C),XP(a)
      • Refutation
        • Q(d);XB(E)
    • Try
      • S(C);
      • Threat
        • S(C)
      • Vars
        • Q(d);N_GUARD,XB(E)::S(C)
      • Refutation
        • Q(d);
  • Actual
    • S(C);
    • Threat
      • S(C),XP(a)
    • Vars
      • Q(d);SBLOCK,XS(C)::R1(B)
      • Q(d);N_GUARD,XB(E)::S(C)
      • P(a);::S(C)
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