MESON Chess Problem Database

Problem Display
PID: 55062 (1NK5/8/8/1k6/1n1Q4/8/1N6/8 w - - 0 1)

Zimmer, Eligiusz

Problem Observer, 2004

1NK5/8/8/1k6/1n1Q4/8/1N6/8

#2

4 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...Ka5
      • 2.Qc5#
  • Tries
    • 1.Kb7?
      • threat
        • 2.Qb6#
      • 1...Ka5
        • 2.Qc5#
        • 2.Qb6#
      • 1...Sd5!
    • 1.Qc4+?
      • 1...Ka5
        • 2.Qc5#
      • 1...Kb6!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Qb6#
      • 1...Ka5
        • 2.Qb6#
      • 1...Ka6
        • 2.Qb6#
      • 1...Kc6
        • 2.Qc5#
      • 1...Sd5
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT::QAR2(B)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • QAR1(B)
      • Refutation
        • S(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(B)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(C);
    • Threat
      • QAR1(B)
    • Vars
      • K(b);P-FLIGHT::QAB1(B)
      • K(b);S_FLIGHT::QAR1(B)
      • S(a);OGATE::QAB1(B)
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