MESON Chess Problem Database

Problem Display
PID: 23676 (7K/4pk2/5N1R/8/8/4Q1B1/8/8 w - - 0 1)

Bettmann, Henry Wald

Gazette-Times, 1915

7K/4pk2/5N1R/8/8/4Q1B1/8/8

#2

5 + 2

56 The Problemist 1943
3295 Einfuhrung in die Welt des Schachproblem 1984
5454 Near Snap 2013

SOLUTION

  • SOUND
  • Tries
    • 1.Qb3+?
      • 1...Kf8
        • 2.Qg8#
      • 1...e6!
    • 1.Qe6+?
      • 1...Kf8
        • 2.Qg8#
      • 1...Kxe6!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Qxe7#
      • 1...Kf8
        • 2.Qxe7#
      • 1...exd6
        • 2.Qe8#
      • 1...exf6
        • 2.Qe7#
      • 1...e5
        • 2.Qb3#
      • 1...e6
        • 2.Qa7#

This anticipates 148428(1915)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • P(a);P_SPINP(a)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);S_FLIGHT,XQ(A)
  • Actual
    • B(B);
    • Threat
      • QAR1(A),XP(a)
    • Vars
      • K(b);P-FLIGHT,P_SPINP(a)::QAB1(A),XP(a)
      • P(a);OGATE,XB(B)::QAB1(A)
      • P(a);XS(C)::QAR1(A)
      • P(a);N_GUARD::QAB(A)
      • P(a);OGATEB,SBLOCK::QAR(A)
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