MESON Chess Problem Database

Problem Display
PID: 226435 (5N2/1p2p3/b3N1p1/4k1p1/2p3P1/4K3/5QB1/8 w - - 0 1)

Laib, Kurt Friedrich

Kieler Schachgesellschaft, 1978

5N2/1p2p3/b3N1p1/4k1p1/2p3P1/4K3/5QB1/8

#2

6 + 7

16882 KSG-Problemschach 1969-1987 (Muck/Laue) 1993

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qg3#
  • Tries
    • 1.Kd2?
      • threat
        • 2.Qd4#
      • 1...Kd6
        • 2.Qg3#
        • 2.Qd4#
        • 2.Qc5#
      • 1...c3+!
    • 1.Ke2?
      • threat
        • 2.Qd4#
      • 1...Kd6
        • 2.Qg3#
        • 2.Qd4#
        • 2.Qc5#
      • 1...c3+!
    • 1.Qb2+?
      • 1...Kd6
        • 2.Qd4#
      • 1...c3!
    • 1.Qf5+?
      • 1...Kd6
        • 2.Qc5#
        • 2.Qd5#
      • 1...gxf5!
  • Keys
    • 1.Kf3!
      • threat
        • 2.Qd4#
      • 1...Kd5
        • 2.Qc5#
      • 1...Kd6
        • 2.Qc5#
      • 1...Kf6
        • 2.Ke4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAB(A)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • QAB1(A)
      • Refutation
        • P(a);CHECK
    • Try
      • K(C);P-FLIGHT
      • Threat
        • QAB1(A)
      • Refutation
        • P(a);CHECK
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR2(A)
      • Refutation
        • P(a);P_SPINP(a)
    • Try
      • Q(A);CHECK
      • Refutation
        • P(e);XQ(A)
  • Actual
    • K(C);P-FLIGHT
    • Threat
      • QAB1(A)
    • Vars
      • K(b);P-FLIGHT::QAR1(A)
      • K(b);S_FLIGHT::QAB1(A)
      • K(b);S_FLIGHT::QAR(A)+K(C)
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