MESON Chess Problem Database

Problem Display
PID: 185060 (8/2K1p3/2p5/3k4/5QP1/1N6/8/8 w - - 0 1)

Kupper, Josef

Basler Nachrichten, 1953

8/2K1p3/2p5/3k4/5QP1/1N6/8/8

#2

4 + 3

15601 Albrecht-Leiss-Degener Collection 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ke6
      • 2.Qf5#
    • 1...e6
      • 2.Qd4#
  • Tries
    • 1.Qf3+?
      • 1...Ke5
        • 2.Qf5#
      • 1...Ke6
        • 2.Qf5#
      • 1...Kc4!
  • Keys
    • 1.Sd2!
      • 1...Kc5
        • 2.Qc4#
      • 1...Ke6
        • 2.Qf5#
      • 1...c5
        • 2.Qe4#
      • 1...e5
        • 2.Qc4#
      • 1...e6
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(B)
    • P(c);SBLOCK::QAR1(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(A);
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
      • K(a);S_FLIGHT::QAB1(B)
      • P(b);SBLOCK::QAB1(B)
      • P(c);SBLOCK::QAB1(B)
      • P(c);N_GUARD::QAR1(B)
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