MESON Chess Problem Database

Problem Display
PID: 215980 (5k2/Q1N5/7K/8/8/8/8/8 w - - 0 1)

Zickermann, Albert

Suomen Shakki, 1933

5k2/Q1N5/7K/8/8/8/8/8

#2

3 + 1

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Kg6?
      • 1...Kg8
        • 2.Qb8#
        • 2.Qa8#
      • 1...Ke7!
    • 1.Sb5?
      • 1...Kg8
        • 2.Qg7#
      • 1...Ke8!
    • 1.Sa6?
      • 1...Kg8
        • 2.Qg7#
      • 1...Ke8!
    • 1.Se6+?
      • 1...Kg8
        • 2.Qg7#
        • 2.Qh7#
      • 1...Ke8!
    • 1.Sa8?
      • 1...Kg8
        • 2.Qg7#
      • 1...Ke8!
    • 1.Se8?
      • 1...Kg8
        • 2.Qg7#
      • 1...Kxe8!
    • 1.Qg1?
      • threat
        • 2.Qg7#
      • 1...Kf7
        • 2.Qg7#
      • 1...Ke7!
    • 1.Qe3?
      • threat
        • 2.Qe8#
      • 1...Kg8
        • 2.Qe8#
      • 1...Kf7!
    • 1.Qd4?
      • threat
        • 2.Qg7#
      • 1...Kf7
        • 2.Qg7#
      • 1...Kg8
        • 2.Qg7#
      • 1...Ke7!
    • 1.Qa1?
      • threat
        • 2.Qg7#
      • 1...Kf7
        • 2.Qg7#
      • 1...Kg8
        • 2.Qg7#
      • 1...Ke7!
  • Keys
    • 1.Sd5!
      • 1...Ke8
        • 2.Qe7#
      • 1...Kg8
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(C);
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(C);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(C);
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(C);
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • K(a);P-FLIGHT::QAR2(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(a);P-FLIGHT::QAR1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(a);P-FLIGHT::QAR1(B)
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