MESON Chess Problem Database

Problem Display
PID: 202608 (4n1Bn/3pqrb1/2bp4/2PkP1R1/1Pp5/5N2/1Q6/K3R1B1 w - - 0 1)

Ellerman, Arnoldo

Brisbane Courier, 1923

4n1Bn/3pqrb1/2bp4/2PkP1R1/1Pp5/5N2/1Q6/K3R1B1

#2

10 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qf6
      • 2.exf6#
    • 1...Qe6
      • 2.Qd4#
      • 2.Qd2#
    • 1...Sf6
      • 2.e6#
    • 1...c3
      • 2.Qa2#
      • 2.Qb3#
  • Keys
    • 1.Qg2!
      • threat
        • 2.Sd4#
      • 1...Ke6
        • 2.Sd4#
      • 1...Qxg5
        • 2.Sxg5#
      • 1...c3
        • 2.Qa2#
      • 1...Qf6
        • 2.exf6#
      • 1...Qe6
        • 2.Qd2#
      • 1...Sf6
        • 2.e6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(f);OGATE::R(I)+P(H),XQ(f)
    • S(i);S_CUTB(h),S_CUTQ(f)::R(I)+P(H)
  • Actual
    • Q(D);P_SPINP(H)
    • Threat
      • QAB(D)+S(E)
    • Vars
      • K(b);S_FLIGHT::S(E)
      • Q(f);XR(I)::QAB(D)+S(E),XQ(f)
      • P(a);N_PINP(H),OGATEB::QAB(D)
      • Q(f);::R(I)+P(H),XQ(f)
      • Q(f);N_SPINR(g),SBLOCK::QAR(D)
      • S(i);N_PINP(H)::R(I)+P(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).