MESON Chess Problem Database

Problem Display
PID: 51474 (1bB4Q/4p2p/2p1r3/2Rb1kPP/r1n3n1/p2P3N/4NP2/4K1R1 w - - 0 1)

Parthasarathy, Dr Mukkur

Subrahmanyam, Swaminatha

The Guardian, 1961

1bB4Q/4p2p/2p1r3/2Rb1kPP/r1n3n1/p2P3N/4NP2/4K1R1

#2

11 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Be5
      • 2.Qxh7#
    • 1...Sce5
      • 2.Sg3#
    • 1...Se3
      • 2.Sd4#
    • 1...Sge5
      • 2.Sd4#
  • Tries
    • 1.Rxd5+?
      • 1...Be5
        • 2.Sg3#
        • 2.Sd4#
        • 2.Qxh7#
      • 1...Sce5
        • 2.Sg3#
        • 2.Qxh7#
      • 1...Sge5
        • 2.Sd4#
        • 2.Qxh7#
        • 2.Qf8#
      • 1...cxd5!
    • 1.Qf8+?
      • 1...Ke5
        • 2.Qf4#
      • 1...Sf6!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qxe6#
      • 1...Ke5
        • 2.Qxe6#
      • 1...Be5
        • 2.Qxh7#
      • 1...Sce5
        • 2.Sg3#
      • 1...Sge5
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(k);N_PINS(C),N_SPINB(e),SBLOCK::QAB(K),XP(j)
    • S(c);N_PINS(C),N_SPINB(e)::S(C)
    • S(d);N_PINS(C)::S(C)
    • S(d);N_PINS(C),N_SPINB(e)::S(C)
  • Tries
    • Try
      • R(G);CHECK,XB(e)
      • Refutation
        • P(g);XR(G)
    • Try
      • Q(K);CHECK
      • Vars
        • K(f);N_PINS(C),N_SPINR(h),OGATE,P-FLIGHT::QAB1(K)
      • Refutation
        • S(d);P_SPINS(d)
  • Actual
    • Q(K);
    • Threat
      • QAB1(K),XR(h)
    • Vars
      • K(f);N_PINS(C),N_SPINR(h),P-FLIGHT::QAR1(K),XR(h)
      • B(k);N_PINS(C),N_SPINB(e),SBLOCK::QAB(K),XP(j)
      • S(c);N_PINS(C),N_SPINB(e),SBLOCK::S(C)
      • S(d);N_PINS(C),N_SPINB(e),SBLOCK::S(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).