MESON Chess Problem Database

Problem Display
PID: 109733 (3N4/4B3/2r4p/R1qkp2N/8/1PP5/7Q/4K3 w - - 0 1)

Wurtele, AC

Montreal Gazette, 1895

3N4/4B3/2r4p/R1qkp2N/8/1PP5/7Q/4K3

#2

8 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf6
      • 2.Sxf6#
    • 1...Rc7
      • 2.Sf6#
    • 1...Rc8
      • 2.Sf6#
  • Tries
    • 1.Rxc5+?
      • 1...Rxc5
        • 2.Sf6#
      • 1...Ke4!
    • 1.Qe2?
      • threat
        • 2.Qd3#
        • 2.Qc4#
      • 1...Qxa5
        • 2.Qd3#
      • 1...Qb5
        • 2.Qd3#
      • 1...e4!
    • 1.Qh3?
      • threat
        • 2.Qd3#
      • 1...e4
        • 2.Qf5#
      • 1...Ke4!
  • Keys
    • 1.Sg3!
      • threat
        • 2.Qd2#
      • 1...e4
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • R(d);N_GUARD::S(F),XR(d)
    • R(d);N_GUARD::S(F)
  • Tries
    • Try
      • R(E);CHECK,XQ(a)
      • Vars
        • R(d);XR(E)::S(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);N_SPINQ(a),P_PINP(D),XR(E)::QAR2(B)
        • Q(a);::QAR2(B)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • P(c);OGATEB::QAR2(B)
      • Refutation
        • K(b);N_SPINQ(a),S_FLIGHT
  • Actual
    • S(F);
    • Threat
      • QAR(B)
    • Vars
      • P(c);OGATEB::QAR(B)
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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).