Problem Display
PID: 76738 (7K/7p/6bk/5Rpp/6P1/6Q1/8/8 w - - 0 1)

Butwillo, Brother

The Tablet, 1944

(First published on Sat Aug 5 1944)

7K/7p/6bk/5Rpp/6P1/6Q1/8/8

#2

4 + 5


15239 Valois Notebooks 2016

SOLUTION


  • SOUND
  • Tries
    • 1.Rf6?
      • 1...hxg4
        • 2.Qh2#
      • 1...h4!
    • 1.Qf4?
      • threat
        • 2.Qxg5#
      • 1...gxf4
        • 2.g5#
      • 1...Bxf5!
    • 1.gxh5?
      • threat
        • 2.Qxg5#
      • 1...Kxh5
        • 2.Qh3#
        • 2.Qxg5#
      • 1...g4
        • 2.Qf4#
        • 2.Qe3#
      • 1...Bxf5!
  • Keys
    • 1.Qh4!
      • threat
        • 2.Qxg5#
      • 1...Bxf5
        • 2.Qxh5#
      • 1...gxh4
        • 2.g5#

FEATURES


  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);P_PINB(c)
      • Vars
        • P(b);OGATEB,XP(B)::QAR(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);P_PINP(a)
      • Threat
        • QAB1(A),XP(a)
      • Vars
        • P(a);N_SPINP(a),OGATE,XQ(A)::P(B)
      • Refutation
        • B(c);XR(C)
    • Try
      • P(B);XP(b)
      • Threat
        • QAB1(A),XP(a)
      • Refutation
        • B(c);XR(C)
  • Actual
    • Q(A);P_PINP(b)
    • Threat
      • QAB1(A),XP(a)
    • Vars
      • B(c);N_GUARD,XR(C)::QAR1(A),XP(b)
      • P(a);N_SPINP(b),OGATE,XQ(A)::P(B)


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).