MESON Chess Problem Database

Problem Display
PID: 232980 (8/8/8/3Q4/8/K7/2kNb3/1Rr5 w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Kudesnik, 2000

8/8/8/3Q4/8/K7/2kNb3/1Rr5

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Rxc1#
  • Tries
    • 1.Rb2+?
      • 1...Kc3
        • 2.Se4#
      • 1...Kd1!
  • Keys
    • 1.Se4!
      • threat
        • 2.Rb2#
        • 2.Qb3#
      • 1...Kxb1
        • 2.Qa2#
      • 1...Rxb1
        • 2.Qd2#
      • 1...Bd3
        • 2.Qb3#
      • 1...Rd1
        • 2.Qb3#
      • 1...Re1
        • 2.Qb3#
      • 1...Rf1
        • 2.Qb3#
      • 1...Rg1
        • 2.Qb3#
      • 1...Rh1
        • 2.Qb3#
      • 1...Bc4
        • 2.Rb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • K(b);P-FLIGHT::R(A),XR(a)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(b);P-FLIGHT::S(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • S(B);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);S_FLIGHT,XR(A)::QAB1(D)
      • R(a);SBLOCK,XR(A)::QAR1(D)
      • B(c);::QAB1(D)
      • R(a);::QAB1(D)
      • B(c);::R1(A)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).