MESON Chess Problem Database

Problem Display
PID: 245069 (2R4b/8/r2n4/6N1/1P1kPB2/r1n5/1N1P3K/8 w - - 0 1)

Eerkes, Allard Pieter

De Maasbode, 1952

2R4b/8/r2n4/6N1/1P1kPB2/r1n5/1N1P3K/8

#2

8 + 6

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.dxc3#
    • 1...Ra2
      • 2.dxc3#
    • 1...R3a4
      • 2.dxc3#
    • 1...R3a5
      • 2.dxc3#
    • 1...Sc4
      • 2.Rxc4#
    • 1...Sb5
      • 2.Rc4#
    • 1...Sf5
      • 2.Rc4#
    • 1...Sb7
      • 2.Rc4#
    • 1...Sf7
      • 2.Rc4#
    • 1...Se8
      • 2.Rc4#
  • Keys
    • 1.Rc5!
      • threat
        • 2.Be3#
      • 1...Scxe4
        • 2.Se6#
      • 1...Be5
        • 2.Bxe5#
      • 1...Sb1
        • 2.Rd5#
      • 1...Sd1
        • 2.Rd5#
      • 1...Sa2
        • 2.Rd5#
      • 1...Se2
        • 2.Rd5#
      • 1...Sa4
        • 2.Rd5#
      • 1...Scb5
        • 2.Rd5#
      • 1...Sd5
        • 2.Rxd5#
      • 1...Sc4
        • 2.Rxc4#
      • 1...Sf5
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 8
  • Sets
    • R(a);N_GUARD::P(B),XS(b)
    • S(e);N_GUARD::R1(H),XS(e)
    • S(e);N_GUARD::R1(H)
  • Actual
    • R(H);
    • Threat
      • B(F)
    • Vars
      • S(b);SBLOCK,XP(E)::S(G)
      • B(f);N_GUARD,P_PINB(F)::B(F),XB(f)
      • S(b);N_GUARD::R1(H)
      • S(b);N_GUARD::R1(H),XS(b)
      • S(e);N_GUARD::R1(H),XS(e)
      • S(e);N_GUARD::R1(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).