MESON Chess Problem Database

Problem Display
PID: 202565 (4R3/B7/8/1Rb3pN/r7/3pn3/2n2k1N/1Q3B1K w - - 0 1)

Ellerman, Arnoldo

Brisbane Courier, 1923

4R3/B7/8/1Rb3pN/r7/3pn3/2n2k1N/1Q3B1K

#2

8 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bb4
      • 2.Rf5#
    • 1...Sxf1
      • 2.Qxf1#
  • Keys
    • 1.Qc1!
      • threat
        • 2.Qd2#
      • 1...Sxf1
        • 2.Qxf1#
      • 1...Bb4
        • 2.Rf5#
      • 1...Sd4
        • 2.Qxe3#
      • 1...Sc4
        • 2.Rf8#
      • 1...d2
        • 2.Qxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(f);OGATE,P_SPINS(d)::R(E)
    • S(d);OGATE,P_SPINB(f),XB(B)::QAR1(A),XS(d)
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • S(d);OGATE,P_SPINB(f),XB(B)::QAR1(A),XS(d)
      • B(f);OGATE,P_SPINS(d)::R(E)
      • S(a);N_GUARD,S_CUTB(f)::QAB1(A),XS(d)
      • S(d);N_GUARD,P_SPINB(f),S_CUTR(e)::R(H)
      • P(c);::QAR2(A),XP(c)
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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).