MESON Chess Problem Database

Problem Display
PID: 78758 (r7/4p3/6NB/R6p/R4pkN/6pn/4b3/K2B1Qnr w - - 0 1)

Andrade, Barry Jack da Costa

The Tablet, 1960

(First published on Sat Feb 6 1960)

r7/4p3/6NB/R6p/R4pkN/6pn/4b3/K2B1Qnr

#2

8 + 10

15239 Valois Notebooks 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.Rxf4#
      • 2.Rg5#
    • 1...Sg5
      • 2.Rxf4#
      • 2.Rxg5#
    • 1...g2
      • 2.Qxg2#
  • Tries
    • 1.Bxe2+?
      • 1...Sf3
        • 2.Bxf3#
      • 1...Sxe2!
    • 1.Qxe2+?
      • 1...Sf3
        • 2.Qxf3#
        • 2.Qe6#
      • 1...Sxe2!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Se3#
      • 1...Sf2
        • 2.Rxf4#
      • 1...g2
        • 2.Qxg2#

This is a version of 96251

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(d);OGATEB::QAR2(C),XP(d)
  • Tries
    • Try
      • B(B);CHECK,XB(c)
      • Vars
        • S(a);N_GUARD,P_PINQ(C),P_SPINS(a)::B(B),XS(a)
      • Refutation
        • S(a);P_PINQ(C),XB(B)
    • Try
      • Q(C);CHECK,XB(c)
      • Refutation
        • S(a);P_PINB(B),P_SPINS(a),XQ(C)
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • S(e);N_GUARD::R1(D),XP(f)
      • P(d);OGATEB::QAR2(C),XP(d)
HTML5 logo

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).