MESON Chess Problem Database

Problem Display
PID: 255129 (8/4N3/1p1Q4/kp6/1p6/8/8/K7 w - - 0 1)

Zimmer, Eligiusz

Magadan-60 JT (Kudesnik), 1999

(First published on Wed Mar 10 1999)

8/4N3/1p1Q4/kp6/1p6/8/8/K7

#2

3 + 4

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...b3
      • 2.Qa3#
  • Tries
    • 1.Sc6+?
      • 1...Ka4
        • 2.Qxb4#
      • 1...Ka6!
    • 1.Sc8?
      • 1...Ka6
        • 2.Qxb6#
      • 1...b3
        • 2.Qa3#
      • 1...Ka4!
    • 1.Qd2?
      • threat
        • 2.Qa2#
      • 1...Ka4
        • 2.Qa2#
      • 1...Ka6!
    • 1.Qd5?
      • threat
        • 2.Qa2#
        • 2.Qa8#
      • 1...Ka4
        • 2.Qa2#
      • 1...Ka6
        • 2.Qa8#
      • 1...b3!
  • Keys
    • 1.Sd5!
      • 1...Ka4
        • 2.Qxb4#
      • 1...Ka6
        • 2.Qxb6#
      • 1...b3
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATE::QAR2(B)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR1(B),XP(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(C);
      • Vars
        • K(b);N_GUARD,P-FLIGHT,P_SPINP(d)::QAR1(B),XP(d)
        • P(a);OGATE::QAR2(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(B);P_PINP(a)
      • Threat
        • QAR(B)
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR2(B)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
    • Try
      • Q(B);P_PINP(c)
      • Threat
        • DUALS(2)
      • Vars
        • K(b);N_SPINP(c),P-FLIGHT::QAR2(B)
      • Refutation
        • P(a);
  • Actual
    • S(C);
    • Vars
      • K(b);N_GUARD,P-FLIGHT::QAR1(B),XP(a)
      • K(b);N_GUARD,P-FLIGHT,P_SPINP(d)::QAR1(B),XP(d)
      • P(a);OGATE::QAR2(B)
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