MESON Chess Problem Database

Problem Display
PID: 18039 (1KR5/1NQ1p1B1/5r2/3N2p1/2nk1bR1/2pn4/2P3B1/8 w - - 0 1)

Reynolds, FM

Time & Tide, 1952

1KR5/1NQ1p1B1/5r2/3N2p1/2nk1bR1/2pn4/2P3B1/8

#2

9 + 8

5454 Near Snap 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sde5
      • 2.Qc5#
    • 1...Sce5
      • 2.Qxc3#
    • 1...Sd6
      • 2.Qxc3#
    • 1...e5
      • 2.Qxc4#
  • Tries
    • 1.Bxf6+?
      • 1...Sde5
        • 2.Qxc4#
        • 2.Qc5#
      • 1...Sce5
        • 2.Qxc3#
        • 2.Qc4#
      • 1...e5
        • 2.Qxc4#
      • 1...exf6!
  • Keys
    • 1.Sd8!
      • threat
        • 2.Se6#
      • 1...Sd6
        • 2.Qxc3#
      • 1...Sc5
        • 2.Sc6#
      • 1...Sde5
        • 2.Qc5#
      • 1...Sce5
        • 2.Qxc3#
      • 1...e5
        • 2.Qxc4#
      • 1...e6
        • 2.Sxe6#

Anticipated by 330(1924)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(b);N_PINQ(F),N_SPINR(g),SBLOCK::QAB1(F)
    • S(c);N_PINQ(F),N_SPINR(g),SBLOCK::QAB1(F),XP(a)
    • S(c);N_PINQ(F)::QAB1(F),XP(a)
    • P(h);N_PINQ(F),N_SPINR(g),SBLOCK::QAR1(F),XS(c)
  • Tries
    • Try
      • B(G);CHECK,XR(g)
      • Vars
        • P(h);N_PINQ(F),P_SPINP(h)::QAR1(F),XS(c)
      • Refutation
        • P(h);XB(G)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • S(c);N_PINQ(F)::QAB1(F),XP(a)
      • S(b);SBLOCK::S(E)
      • S(b);N_PINQ(F),N_SPINR(g),SBLOCK::QAB1(F)
      • S(c);N_PINQ(F),N_SPINR(g),SBLOCK::QAB1(F),XP(a)
      • P(h);N_PINQ(F),N_SPINR(g),SBLOCK::QAR1(F),XS(c)
      • P(h);::S(E),XP(h)
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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).