MESON Chess Problem Database

Problem Display
PID: 102877 (4bNB1/Q2Ppn1P/3b1PN1/2r2k1K/R5pP/2PP2P1/8/2R1r3 w - - 0 1)

Krishnamachari, TA

Subrahmanyam, Swaminatha

The Hindu, 1929

4bNB1/Q2Ppn1P/3b1PN1/2r2k1K/R5pP/2PP2P1/8/2R1r3

#2

14 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ree5
      • 2.Rf1#
      • 2.Rf4#
    • 1...Rce5
      • 2.Rf4#
      • 2.Qf2#
    • 1...Bf4
      • 2.Rxf4#
    • 1...Se5
      • 2.Rf4#
  • Keys
    • 1.Qxc5+!
      • 1...Kxf6
        • 2.dxe8S#
      • 1...Re5
        • 2.Rf1#
        • 2.Rf4#
        • 2.Qf2#
      • 1...Bxc5
        • 2.Rf4#
      • 1...Be5
        • 2.Rf4#
      • 1...Se5
        • 2.Rf4#
      • 1...e5
        • 2.Rf4#
        • 2.Qf2#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(e);N_GUARD::R1(E),XB(e)
    • S(g);P_PINS(I),S_CUTB(e)::R1(E)
  • Actual
    • Q(J);CHECK,XR(c)
    • Vars
      • K(d);P-FLIGHT,XP(H)::PXB(h)=S
      • B(e);XQ(J)::R1(E)
      • B(e);P_SPINB(e)::R1(E)
      • S(g);P_PINS(I),P_SPINS(g)::R1(E)
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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).