MESON Chess Problem Database

Problem Display
PID: 62543 (3BRK2/2p3R1/3pN3/4pkp1/2r5/1BN3bn/4Q1P1/1b6 w - - 0 1)

Muralidharan, Krishnamurthy

Problemesis, 2002

3BRK2/2p3R1/3pN3/4pkp1/2r5/1BN3bn/4Q1P1/1b6

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bf4
      • 2.g4#
    • 1...Sg1
      • 2.Rxg5#
    • 1...Sf2
      • 2.Rxg5#
    • 1...Sf4
      • 2.Rxg5#
  • Tries
    • 1.Qf3+?
      • 1...Bf4
        • 2.g4#
      • 1...Sf4
        • 2.Rxg5#
      • 1...Rf4!
    • 1.gxh3?
      • threat
        • 2.Rxg5#
      • 1...Rg4
        • 2.Qxg4#
        • 2.hxg4#
      • 1...Bf4
        • 2.Qg4#
      • 1...g4
        • 2.Rg5#
      • 1...Bh4!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Rf7#
      • 1...Kxf4
        • 2.Qf3#
      • 1...Rxf4
        • 2.Be6#
      • 1...Bxf4
        • 2.g4#
      • 1...Sxf4
        • 2.Rxg5#
      • 1...exf4
        • 2.Qe6#
      • 1...gxf4
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • B(b);OGATE::P(B)
    • S(c);N_GUARD::R1(F),XP(g)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • B(b);OGATE,P_SPINB(b)::P(B)
        • S(c);P_SPINS(c)::R1(F),XP(g)
      • Refutation
        • R(d);P_SPINR(d)
    • Try
      • P(B);XS(c)
      • Threat
        • R1(F),XP(g)
      • Vars
        • B(b);S_CUTR(d)::QAB1(A)
        • P(g);::R1(F)
      • Refutation
        • B(b);
  • Actual
    • S(E);
    • Threat
      • R(F)
    • Vars
      • K(f);OGATEB,P-FLIGHT,XS(E)::QAR1(A)
      • R(d);OGATE,SBLOCK,XS(E)::B(C)
      • B(b);OGATE,SBLOCK,XS(E)::P(B)
      • S(c);N_GUARD,SBLOCK,XS(E)::R1(F),XP(g)
      • P(e);OGATE,SBLOCK,XS(E)::QAB1(A)
      • P(g);XS(E)::QAB1(A)
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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).