MESON Chess Problem Database

Problem Display
PID: 265931 (8/3K4/p2Q4/1k6/1N2P3/8/8/8 w - - 0 1)

Radchenko, Sergei Vladimirovich

Buletin Problemistic, 1994

8/3K4/p2Q4/1k6/1N2P3/8/8/8

#2

4 + 2

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Sc2?
      • threat
        • 2.Qb4#
      • 1...Ka4
        • 2.Qb4#
      • 1...Ka5
        • 2.Qb4#
      • 1...a5
        • 2.Qc6#
      • 1...Kc4!
    • 1.Sd3?
      • threat
        • 2.Qb4#
      • 1...Ka4
        • 2.Qb4#
      • 1...Ka5
        • 2.Qb4#
      • 1...a5
        • 2.Qc6#
      • 1...Kc4!
    • 1.Sd5?
      • threat
        • 2.Qb4#
      • 1...Ka4
        • 2.Qb4#
      • 1...Ka5
        • 2.Qb4#
      • 1...a5
        • 2.Qc6#
      • 1...Kc4!
  • Keys
    • 1.Sa2!
      • threat
        • 2.Qb4#
      • 1...Ka4
        • 2.Qb4#
      • 1...Kc4
        • 2.Qd5#
      • 1...Ka5
        • 2.Qb4#
      • 1...a5
        • 2.Qc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
        • K(a);P-FLIGHT::QAB1(C)
        • P(b);SBLOCK::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
        • K(a);P-FLIGHT::QAB1(C)
        • P(b);SBLOCK::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(A);
      • Threat
        • QAR1(C)
      • Vars
        • K(a);S_FLIGHT::QAR1(C)
        • K(a);P-FLIGHT::QAB1(C)
        • P(b);SBLOCK::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(A);
    • Threat
      • QAR1(C)
    • Vars
      • K(a);S_FLIGHT::QAR1(C)
      • K(a);N_GUARD,S_FLIGHT::QAB1(C)
      • K(a);P-FLIGHT::QAB1(C)
      • P(b);SBLOCK::QAB1(C)
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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).