MESON Chess Problem Database

Problem Display
PID: 207039 (4B3/K7/5Q2/2k5/8/8/3P4/8 w - - 0 1)

Sloos, R (jr)

Sloos, RC (sr)

Sissa, 1862

4B3/K7/5Q2/2k5/8/8/3P4/8

#2

4 + 1

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kb4
      • 2.Qc3#
  • Tries
    • 1.Qe5+?
      • 1...Kb4
        • 2.Qc3#
      • 1...Kc4!
    • 1.Qc6+?
      • 1...Kb4
        • 2.Qc3#
      • 1...Kd4!
  • Keys
    • 1.Bc6!
      • 1...Kb4
        • 2.Qc3#
      • 1...Kc4
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAB1(B)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(B)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • B(D);
    • Vars
      • K(a);S_FLIGHT::QAB1(B)
      • K(a);P-FLIGHT::QAR1(B)
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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).