MESON Chess Problem Database

Problem Display
PID: 250814 (2N5/3K4/p7/kp6/8/8/2QP4/8 w - - 0 1)

Zimmer, Eligiusz

Schweizerische Schachzeitung, 1999

2N5/3K4/p7/kp6/8/8/2QP4/8

#2

4 + 3

SOLUTION

  • SOUND
  • Tries
    • 1.Kc6?
      • 1...b4
        • 2.Qa2#
      • 1...Kb4!
    • 1.Qc3+?
      • 1...Ka4
        • 2.Sb6#
      • 1...b4!
  • Keys
    • 1.Sb6!
      • 1...Kb4
        • 2.Qc3#
      • 1...Kxb6
        • 2.Qc7#
      • 1...b4
        • 2.Qc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • P(b);SBLOCK::QAR(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);N_GUARD,P-FLIGHT,S_CUTP(b)::S(D)
      • Refutation
        • P(b);P_SPINP(b)
  • Actual
    • S(D);
    • Vars
      • K(a);N_GUARD,S_CUTP(b),S_FLIGHT::QAB1(A)
      • K(a);OGATEB,S_FLIGHT,XS(D)::QAB1(A)
      • P(b);OGATEB::QAR2(A)
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