MESON Chess Problem Database

Problem Display
PID: 160331 (8/Qp2K3/1pk5/8/8/1N1N4/2P5/3R4 w - - 0 1)

Abdullayev, Elmar

Kudesnik, 2016

8/Qp2K3/1pk5/8/8/1N1N4/2P5/3R4

#2

6 + 3

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...b5
      • 2.Qc5#
  • Tries
    • 1.Sbc5?
      • 1...Kb5
        • 2.Qa4#
      • 1...Kc7
        • 2.Qxb7#
      • 1...bxc5
        • 2.Qxc5#
      • 1...b5
        • 2.Qxb7#
      • 1...Kd5!
    • 1.Sb2?
      • 1...Kb5
        • 2.Qa4#
      • 1...b5
        • 2.Qc5#
      • 1...Kc7!
    • 1.Qxb6+?
      • 1...Kd5
        • 2.Qe6#
      • 1...Kxb6!
    • 1.c4?
      • 1...b5
        • 2.Qc5#
      • 1...Kc7!
  • Keys
    • 1.Sdc5!
      • 1...Kb5
        • 2.Qa4#
      • 1...Kc7
        • 2.Qxb7#
      • 1...bxc5
        • 2.Qxc5#
      • 1...b5
        • 2.Qxb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATE::QAR1(E)
  • Tries
    • Try
      • S(C);
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
        • K(b);P-FLIGHT,P_SPINP(c)::QAR1(E),XP(c)
        • P(a);OGATE,XS(C)::QAR1(E),XP(a)
        • P(a);::QAB1(E),XP(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(D);
      • Vars
        • K(b);S_FLIGHT::QAB1(E)
        • P(a);OGATE::QAR1(E)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(E);CHECK,XP(a)
      • Vars
        • K(b);OGATE,S_FLIGHT::QAB1(E)
      • Refutation
        • K(b);P-FLIGHT,XQ(E)
    • Try
      • P(B);
      • Vars
        • P(a);OGATE::QAR1(E)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
  • Actual
    • S(D);
    • Vars
      • K(b);S_FLIGHT::QAB1(E)
      • K(b);P-FLIGHT,P_SPINP(c)::QAR1(E),XP(c)
      • P(a);OGATE,XS(D)::QAR1(E),XP(a)
      • P(a);::QAB1(E),XP(c)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).