MESON Chess Problem Database

Problem Display
PID: 178741 (8/8/8/4K3/4p3/4k3/1P2p2P/4Q3 w - - 0 1)

Holm, Karl Helmer

Springaren, 1948

8/8/8/4K3/4p3/4k3/1P2p2P/4Q3

#2

4 + 3

6490 yacpdb 2018
5454 Near Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qc3#
    • 1...Kf3
      • 2.Qg3#
  • Tries
    • 1.Kd5?
      • 1...Kd3
        • 2.Qc3#
      • 1...Kf3
        • 2.Qg3#
      • 1...Kf4!
    • 1.Kf5?
      • 1...Kd3
        • 2.Qc3#
      • 1...Kf3
        • 2.Qg3#
      • 1...Kd4!
    • 1.Kd6?
      • 1...Kd3
        • 2.Qc3#
      • 1...Kf3
        • 2.Qg3#
      • 1...Kd4
        • 2.Qc3#
      • 1...Kf4!
    • 1.Kf6?
      • 1...Kd3
        • 2.Qc3#
      • 1...Kf3
        • 2.Qg3#
      • 1...Kf4
        • 2.Qg3#
      • 1...Kd4!
    • 1.b3?
      • 1...Kf3
        • 2.Qg3#
      • 1...Kd3!
    • 1.b4?
      • 1...Kf3
        • 2.Qg3#
      • 1...Kd3!
    • 1.h3?
      • 1...Kd3
        • 2.Qc3#
      • 1...Kf3!
    • 1.h4?
      • 1...Kd3
        • 2.Qc3#
      • 1...Kf3!
  • Keys
    • 1.Ke6!
      • 1...Kd3
        • 2.Qc3#
      • 1...Kf3
        • 2.Qg3#
      • 1...Kd4
        • 2.Qc3#
      • 1...Kf4
        • 2.Qg3#

Anticipated by 203228(1924)

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
        • K(b);N_SPINP(a),S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
        • K(b);N_SPINP(a),S_FLIGHT::QAB1(A)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
    • Try
      • P(B);
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
    • Try
      • P(B);
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
    • Try
      • P(C);
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
    • Try
      • P(C);
      • Vars
        • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT
  • Actual
    • K(D);P-FLIGHT
    • Vars
      • K(b);N_SPINP(a),P-FLIGHT::QAR1(A)
      • K(b);N_SPINP(a),S_FLIGHT::QAB1(A)
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Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).