MESON Chess Problem Database

Problem Display
PID: 150190 (8/2q1b2n/R2p2N1/p2k2pp/P3R3/1n1N4/3pB1QK/8 w - - 0 1)

Westbury, Eric Ernest

Argentino de Ajedrez, 1920

8/2q1b2n/R2p2N1/p2k2pp/P3R3/1n1N4/3pB1QK/8

#2

8 + 10

14868 Pirnie Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qb6
      • 2.Sxe7#
    • 1...Qb8
      • 2.Sxe7#
    • 1...Qc1
      • 2.Sxe7#
    • 1...Qc2
      • 2.Sxe7#
    • 1...Qc3
      • 2.Sxe7#
    • 1...Qc4
      • 2.Sxe7#
    • 1...Qc5
      • 2.Sxe7#
    • 1...Qc6
      • 2.Sxe7#
    • 1...Qc8
      • 2.Sxe7#
    • 1...g4
      • 2.Sgf4#
  • Tries
    • 1.Sb4+?
      • 1...Kc5
        • 2.Rc4#
      • 1...axb4!
    • 1.Sdf4+?
      • 1...Kc5
        • 2.Rc4#
      • 1...gxf4!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Rc4#
      • 1...dxc5+
        • 2.Rf4#
      • 1...Kxc5
        • 2.Rc4#
      • 1...Qxc5
        • 2.Sxe7#
      • 1...Sxc5
        • 2.Bc4#
      • 1...Sd4
        • 2.Re5#
      • 1...Sf6
        • 2.Qxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 9
  • Sets
    • Q(h);N_GUARD::S(H),XB(i)
    • P(e);N_GUARD::S(H)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(d);P-FLIGHT::R1(F)
      • Refutation
        • P(c);XS(D)
    • Try
      • S(D);CHECK
      • Vars
        • K(d);P-FLIGHT::R1(F)
      • Refutation
        • P(e);XS(D)
  • Actual
    • S(D);
    • Threat
      • QAB(B)+R(F)
    • Vars
      • P(g);CHECK,SBLOCK,XS(D)::QAB(B)+R(F)
      • K(d);P-FLIGHT,XS(D)::R1(F)
      • Q(h);N_GUARD,SBLOCK,XS(D)::S(H),XB(i)
      • S(b);SBLOCK,XS(D)::B(A)
      • S(b);SBLOCK::QAB(B)+R(F),DCHECK
      • S(j);N_GUARD,S_CUTB(i)::QAR(B),XP(e)
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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).