MESON Chess Problem Database

Problem Display
PID: 179131 (2Br3b/2Bn1pN1/r1np4/1k3p1Q/p2Rp1b1/8/N7/K1R5 w - - 0 1)

Eerkes, Allard Pieter

3rd HM., Arbeidermagasinet, 1935

2Br3b/2Bn1pN1/r1np4/1k3p1Q/p2Rp1b1/8/N7/K1R5

#2

8 + 12

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Be2
      • 2.Qxe2#
    • 1...Bh3
      • 2.Qe2#
    • 1...Sb4
      • 2.Rxb4#
    • 1...Sa5
      • 2.Rb4#
    • 1...Sce5
      • 2.Rb4#
    • 1...Sa7
      • 2.Rb4#
    • 1...Se7
      • 2.Rb4#
    • 1...Scb8
      • 2.Rb4#
    • 1...Sc5
      • 2.Sc3#
    • 1...Sde5
      • 2.Rd5#
    • 1...Sdb8
      • 2.Rd5#
    • 1...Sf8
      • 2.Rd5#
  • Tries
    • 1.Rc5+?
      • 1...Sxc5
        • 2.Sc3#
      • 1...dxc5
        • 2.Sc3#
      • 1...Kxc5!
  • Keys
    • 1.Sxf5!
      • threat
        • 2.Sxd6#
      • 1...Bxd4+
        • 2.Sxd4#
      • 1...Bxf5
        • 2.Qe2#
      • 1...Sce5
        • 2.Rb4#
      • 1...Sc5
        • 2.Sc3#
      • 1...Sde5
        • 2.Rd5#
      • 1...d5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • B(c);OGATE::QAB(E),XB(c)
    • B(c);OGATE::QAB(E)
    • S(g);N_GUARD::R1(D),XS(g)
    • S(g);N_GUARD::R1(D)
    • S(g);N_GUARD,N_SPINP(e)::R1(D)
    • S(i);N_SPINP(e),SBLOCK::S(C)
    • S(i);N_GUARD,N_SPINP(e)::R(D)
    • S(i);N_GUARD::R(D)
  • Tries
    • Try
      • R(B);CHECK,N_PINP(e)
      • Vars
        • S(i);SBLOCK,XR(B)::S(C)
        • P(h);SBLOCK,XR(B)::S(C)
      • Refutation
        • K(d);P-FLIGHT,P_SPINP(e),XR(B)
  • Actual
    • S(G);P_SPINR(D),XP(e)
    • Threat
      • QAR(E)+S(G),DCHECK,XP(h)
    • Vars
      • B(l);CHECK,XR(D)::QAR(E)+S(G),DCHECK,XB(l)
      • B(c);OGATE,P_SPINB(c),XS(G)::QAB(E)
      • S(g);N_PINR(D)::R1(D)
      • S(i);SBLOCK::S(C)
      • S(i);N_PINR(D)::R(D)
      • P(h);::S(G)
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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).