MESON Chess Problem Database

Problem Display
PID: 165136 (nQ6/B7/8/8/8/5K1p/8/1B5k w - - 0 1)

Lokker, Miklosh S

Die Schwalbe, 1970

nQ6/B7/8/8/8/5K1p/8/1B5k

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Kg3?
      • threat
        • 2.Be4#
        • 2.Qb7#
        • 2.Qxa8#
      • 1...Sc7
        • 2.Be4#
      • 1...Sb6!
    • 1.Qg3?
      • threat
        • 2.Qg1#
        • 2.Qxh3#
      • 1...h2
        • 2.Qe1#
        • 2.Qg2#
      • 1...Sb6!
    • 1.Qg8?
      • threat
        • 2.Qg1#
      • 1...Kh2
        • 2.Qg1#
      • 1...h2
        • 2.Qg2#
      • 1...Sb6!
  • Keys
    • 1.Be4!
      • threat
        • 2.Ke2#
        • 2.Kf2#
        • 2.Kg3#
        • 2.Kg4#
      • 1...Sb6
        • 2.Kf2#
      • 1...Sc7
        • 2.Kg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Threat
        • DUALS(3)
      • Vars
        • S(c);::B(A)
      • Refutation
        • S(c);
    • Try
      • Q(D);
      • Threat
        • DUALS(2)
      • Refutation
        • S(c);
    • Try
      • Q(D);
      • Threat
        • QAR1(D)
      • Vars
        • K(a);P-FLIGHT::QAB1(D)
        • P(b);N_GUARD::QAB1(D)
      • Refutation
        • S(c);
  • Actual
    • B(A);
    • Threat
      • DUALS(4)
    • Vars
      • S(c);::B(A)+K(B)
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