MESON Chess Problem Database

Problem Display
PID: 229616 (3Q4/2P5/B2K4/k7/1N6/8/8/4B3 w - - 0 1)

Chernyavsky, Mykola Vasilovich

Markovtsy, Vassyl Yuriovich

10th Place, The Macedonian Problemist League, 2020

3Q4/2P5/B2K4/k7/1N6/8/8/4B3

#2

6 + 1

SOLUTION

  • SOUND
  • Sets
    • 1...Kb6
      • 2.c8S#
  • Tries
    • 1.Kd5?
      • 1...Kb6
        • 2.c8S#
      • 1...Ka4!
    • 1.Bd2?
      • 1...Kb6
        • 2.c8S#
      • 1...Ka4!
    • 1.Bc3?
      • 1...Kb6
        • 2.c8S#
      • 1...Ka4!
    • 1.Bc4?
      • 1...Ka4
        • 2.Qa8#
      • 1...Kb6!
    • 1.Qg5+?
      • 1...Kb6
        • 2.Bf2#
        • 2.Qc5#
        • 2.c8S#
      • 1...Ka4!
    • 1.Qg8?
      • 1...Ka4
        • 2.Qa2#
      • 1...Kb6!
  • Keys
    • 1.Qa8!
      • 1...Ka4
        • 2.Bc4#
      • 1...Kb6
        • 2.Sd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::P=S
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::P=S
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);S_FLIGHT::P=S
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);S_FLIGHT::P=S
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(C);
      • Vars
        • K(a);P-FLIGHT::QAR(F)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(a);P-FLIGHT::QAR2(F)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(a);P-FLIGHT::QAR(F)+B(C)
      • K(a);S_FLIGHT::S(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).