MESON Chess Problem Database

Problem Display
PID: 227138 (8/Q1K3b1/3p4/1Npr1p2/2n1kP2/4p1R1/3pB1N1/3r4 w - - 0 1)

Willmott, Arthur

Problem Observer, 1998

8/Q1K3b1/3p4/1Npr1p2/2n1kP2/4p1R1/3pB1N1/3r4

#2

7 + 10

15601 Albrecht-Leiss-Degener Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Bf3#
    • 1...Rd4
      • 2.Sc3#
    • 1...Sb2
      • 2.Rxe3#
    • 1...Sa3
      • 2.Rxe3#
    • 1...Sa5
      • 2.Rxe3#
    • 1...Se5
      • 2.Rxe3#
    • 1...Sb6
      • 2.Rxe3#
  • Keys
    • 1.Qa4!
      • threat
        • 2.Rxe3#
      • 1...Rd3
        • 2.Bf3#
      • 1...Rd4
        • 2.Sc3#
      • 1...Re5
        • 2.Qxc4#
      • 1...Bd4
        • 2.Qc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 5
  • Sets
    • R(g);SBLOCK::B(A)
    • R(g);SBLOCK,S_CUTB(j)::S(E)
    • S(d);N_GUARD::R1(C),XP(c)
  • Actual
    • Q(F);P_PINS(d)
    • Threat
      • R1(C),XP(c)
    • Vars
      • R(g);SBLOCK::B(A)
      • R(g);N_SPINS(d),SBLOCK,S_CUTB(j)::S(E)
      • R(g);N_GUARD,S_CUTB(j)::QAR2(F),XS(d)
      • B(j);N_SPINS(d),S_CUTR(g)::QAB(F)
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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).