MESON Chess Problem Database

Problem Display
PID: 194506 (b1B4R/8/8/5NnP/5Pk1/5Rbp/5n2/3Q1KN1 w - - 0 1)

Tkachenko, Sergiy Ivanovich

2nd Comm., 07. World Cup, 2019

b1B4R/8/8/5NnP/5Pk1/5Rbp/5n2/3Q1KN1

#2

9 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf4
      • 2.Rg3#
    • 1...Bh4
      • 2.Se3#
    • 1...Se4
      • 2.Rxf2#
  • Tries
    • 1.Se7+?
      • 1...Kh4
        • 2.Sg6#
      • 1...Se6!
  • Keys
    • 1.Rg8!
      • threat
        • 2.Rxg5#
      • 1...Kxh5
        • 2.Rxg5#
      • 1...Bxf4
        • 2.Rg3#
      • 1...Bxf3
        • 2.Qxf3#
      • 1...Bh4
        • 2.Sg3#
      • 1...Se4
        • 2.Rf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(b);SBLOCK,XP(E)::QAB(A)+R(D),DCHECK
    • B(b);SBLOCK::B(H)+S(F),DCHECK
    • S(e);N_GUARD,S_CUTB(f)::QAB(A)+R(D),XS(a)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(d);P-FLIGHT::S(F)
      • Refutation
        • S(e);P_SPINS(e)
  • Actual
    • R(I);P_PINS(e)
    • Threat
      • R1(I),XS(e)
    • Vars
      • K(d);N_SPINS(e),S_FLIGHT,XP(G)::R1(I),XS(e)
      • B(b);SBLOCK,XP(E)::QAB(A)+R(D),DCHECK
      • B(f);OGATE,P_SPINB(f),XR(D)::QAB1(A),XB(f)
      • B(b);SBLOCK::B(H)+S(F)
      • S(a);S_CUTB(f)::QAB(A)+R(D)
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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).