MESON Chess Problem Database

Problem Display
PID: 43101 (6bK/2r3n1/5p2/7n/1BBk1P2/3Pp1NQ/3qp3/8 w - - 0 1)

Muralidharan, Krishnamurthy

Problemesis, 2002

6bK/2r3n1/5p2/7n/1BBk1P2/3Pp1NQ/3qp3/8

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qc1
      • 2.Sxe2#
    • 1...Qc3
      • 2.Sxe2#
    • 1...Sf5
      • 2.Sxf5#
    • 1...Se6
      • 2.Sf5#
    • 1...Se8
      • 2.Sf5#
  • Tries
    • 1.Qd7+?
      • 1...Bd5
        • 2.Qxd5#
      • 1...Rxd7!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qe4#
      • 1...Qxb4
        • 2.Sxe2#
      • 1...Qxd3
        • 2.Qxd3#
      • 1...Sxg3
        • 2.Qxf6#
      • 1...Sxf5
        • 2.Sxf5#
      • 1...Re7
        • 2.Qc5#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Bh7
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • Q(a);N_GUARD::S(B),XP(b)
    • S(h);N_GUARD::S(B),XS(h)
    • S(h);N_GUARD::S(B)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • B(i);N_GUARD,P_SPINB(i)::QAR1(C),XB(i)
      • Refutation
        • R(g);XQ(C)
  • Actual
    • Q(C);
    • Threat
      • QAR1(C)
    • Vars
      • Q(a);N_GUARD,XB(D)::S(B),XP(b)
      • Q(a);OGATE,XP(A)::QAR1(C),XQ(a)
      • S(e);N_GUARD,XS(B)::QAB(C),XP(f)
      • S(h);XQ(C)::S(B),XS(h)
      • R(g);N_GUARD::QAB1(C)
      • B(i);N_GUARD::QAR1(C),XB(i)
      • B(i);N_GUARD::QAR1(C)
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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).