Problem Display
PID: 259042 (7B/4p1Q1/1pn1P3/rq1NP2K/bP1k1p2/2R2B1p/1P2P3/4r3 w - - 0 1)

Nield, Joshua

Western Morning News, 1923

(First published on Sat Jan 27 1923)

7B/4p1Q1/1pn1P3/rq1NP2K/bP1k1p2/2R2B1p/1P2P3/4r3

#2

11 + 10


15239 Valois Notebooks 2022

SOLUTION


  • SOUND
  • Sets
    • 1...Rg1
      • 2.Qxg1#
    • 1...Sxe5
      • 2.Qxe5#
  • Tries
    • 1.e3+?
      • 1...fxe3
        • 2.Qg4#
      • 1...Rxe3!
  • Keys
    • 1.Se3!
      • threat
        • 2.Sf5#
      • 1...fxe3
        • 2.Qg4#
      • 1...Qd3
        • 2.Rxd3#
      • 1...Bc2
        • 2.Sxc2#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(a);N_GUARD::QAB(J),XR(a)
    • S(i);OGATE,P_SPINS(i),XP(G)::QAB1(J),XS(i)
  • Tries
    • Try
      • P(B);CHECK
      • Vars
        • P(e);S_CUTR(a),XP(B)::QAR(J)
      • Refutation
        • R(a);XP(B)
  • Actual
    • S(F);P_SPINP(G)
    • Threat
      • S(F)
    • Vars
      • P(e);OGATEB,XS(F)::QAR(J)
      • Q(g);N_GUARD::R1(C),XQ(g)
      • B(c);N_GUARD::S(F),XB(c)


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).