MESON Chess Problem Database

Problem Display
PID: 182271 (1b6/1p1Q1N2/1P6/R1PP4/3k1pR1/1p1p4/1p1PP1PK/3b4 w - - 0 1)

van der Werf, JD

Tijdschrift vd NSB, 1906

1b6/1p1Q1N2/1P6/R1PP4/3k1pR1/1p1p4/1p1PP1PK/3b4

#2

11 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Ra4#
    • 1...Ba7
      • 2.Rxf4#
  • Tries
    • 1.e3+?
      • 1...Ke4
        • 2.Ra4#
      • 1...Kc4!
  • Keys
    • 1.e4!
      • threat
        • 2.Qa4#
      • 1...f3+
        • 2.e5#
      • 1...Kc4
        • 2.Qa4#
      • 1...Kxe4
        • 2.Ra4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(e);P-FLIGHT::R(F)
    • B(h);N_GUARD::R(E),XP(f)
  • Tries
    • Try
      • P(B);CHECK
      • Vars
        • K(e);P-FLIGHT::R(F)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • P(B);N_PINP(f)
    • Threat
      • QAR(J)
    • Vars
      • P(f);CHECK::R(E)+P(B)
      • K(e);P-FLIGHT::QAR2(J)
      • K(e);P-FLIGHT,P_SPINP(f),XP(B)::R(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).