Problem Display
PID: 76745 (8/8/8/3K4/B7/B1kp4/8/3R4 w - - 0 1)

Butwillo, Brother

The Tablet, 1944

(First published on Sat Sep 23 1944)

8/8/8/3K4/B7/B1kp4/8/3R4

#2

4 + 2


15239 Valois Notebooks 2016
5454 Near Snap 2022

SOLUTION


  • SOUND
  • Tries
    • 1.Ke4?
      • 1...Kc4
        • 2.Rc1#
      • 1...d2!
    • 1.Ke5?
      • 1...Kc4
        • 2.Rc1#
      • 1...d2!
    • 1.Rf1?
      • 1...d2
        • 2.Rf3#
      • 1...Kd2!
    • 1.Rg1?
      • 1...d2
        • 2.Rg3#
      • 1...Kd2!
    • 1.Rh1?
      • 1...d2
        • 2.Rh3#
      • 1...Kd2!
  • Keys
    • 1.Re1!
      • 1...Kd2
        • 2.Bb4#
      • 1...d2
        • 2.Re3#

This anticipates 230756(1980)

FEATURES


  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • P(b);
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(a);P-FLIGHT::R(A)
      • Refutation
        • P(b);
    • Try
      • R(A);
      • Vars
        • P(b);OGATEB,SBLOCK::R(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • P(b);OGATEB,SBLOCK::R(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • R(A);
      • Vars
        • P(b);OGATEB,SBLOCK::R(A)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(A);
    • Vars
      • K(a);S_FLIGHT::B(B)
      • P(b);OGATEB,SBLOCK::R(A)


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).