MESON Chess Problem Database

Problem Display
PID: 208851 (1Nk5/8/K7/8/7B/8/7Q/8 w - - 0 1)

La Petite Bobiole

Buffalo Globe, 1876

1Nk5/8/K7/8/7B/8/7Q/8

#2

4 + 1

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Qh1?
      • threat
        • 2.Qb7#
      • 1...Kxb8
        • 2.Qb7#
      • 1...Kc7!
    • 1.Qg2?
      • threat
        • 2.Qb7#
      • 1...Kxb8
        • 2.Qb7#
      • 1...Kc7!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qd8#
      • 1...Kc7
        • 2.Qd8#
      • 1...Kxb8
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(a);P-FLIGHT,XS(D)::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(a);P-FLIGHT,XS(D)::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAR1(A)
    • Vars
      • K(a);P-FLIGHT::QAB1(A)
      • K(a);P-FLIGHT,XS(D)::QAR2(A)
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