MESON Chess Problem Database

Problem Display
PID: 185063 (8/8/3Rp2P/1K1pk3/3R2P1/3Q4/1P1N4/8 w - - 0 1)

Preiswerk, R

Basler Nachrichten, 1887

8/8/3Rp2P/1K1pk3/3R2P1/3Q4/1P1N4/8

#2

8 + 3

15601 Albrecht-Leiss-Degener Collection 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Se4?
      • 1...Kf4
        • 2.Qg3#
      • 1...dxe4!
    • 1.Qg6?
      • 1...Kxd4
        • 2.Qe4#
      • 1...Kxd6!
    • 1.Qa3?
      • 1...Kxd4
        • 2.Qc3#
      • 1...Kf6!
    • 1.Qf3?
      • threat
        • 2.Qf4#
      • 1...Kxd4
        • 2.Qe4#
        • 2.Qc3#
      • 1...Kxd6!
    • 1.Qg3+?
      • 1...Kxd4
        • 2.Qc3#
      • 1...Kf6!
  • Keys
    • 1.Qh7!
      • 1...Kxd4
        • 2.Qe4#
      • 1...Kxd6
        • 2.Sc4#
      • 1...Kf6
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
      • Refutation
        • P(a);XS(B)
    • Try
      • Q(C);
      • Vars
        • K(b);P_SPINP(a),S_FLIGHT,XR(D)::QAR1(C)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT,XR(G)
    • Try
      • Q(C);
      • Vars
        • K(b);OGATEB,P_SPINP(a),S_FLIGHT,XR(D)::QAB1(C)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Refutation
        • K(b);P_SPINP(a),S_FLIGHT,XR(G)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATEB,P_SPINP(a),S_FLIGHT,XR(D)::QAB1(C)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT,XR(D)::QAR1(C)
      • K(b);P_SPINP(a),S_FLIGHT,XR(G)::S(B)
      • K(b);P_SPINP(c),S_FLIGHT::QAB1(C)
HTML5 logo

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).