MESON Chess Problem Database

Problem Display
PID: 76322 (8/3K4/8/4N3/4kp2/8/1Q4R1/8 w - - 0 1)

Butwillo, Brother

The Tablet, 1927

(First published on Sat May 14 1927)

8/3K4/8/4N3/4kp2/8/1Q4R1/8

#2

4 + 2

15239 Valois Notebooks 2014
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Re2#
  • Tries
    • 1.Ke6?
      • threat
        • 2.Re2#
      • 1...Ke3
        • 2.Re2#
      • 1...f3!
    • 1.Sc6?
      • 1...Kd3
        • 2.Qd4#
      • 1...Ke3
        • 2.Qe2#
      • 1...Kf3
        • 2.Qe2#
      • 1...Kd5
        • 2.Qd4#
      • 1...Kf5
        • 2.Qe5#
      • 1...f3!
  • Keys
    • 1.Sf3!
      • 1...Kd3
        • 2.Qd4#
      • 1...Ke3
        • 2.Qe2#
      • 1...Kxf3
        • 2.Qe2#
      • 1...Kd5
        • 2.Qd4#
      • 1...Kf5
        • 2.Qe5#

Anticipated by 223105(1886)

This anticipates 225345(1948), 48016(1993), 152906(2000), 232205(2002)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT::R1(B)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • R(B)
      • Vars
        • K(a);P-FLIGHT::R1(B)
      • Refutation
        • P(b);
    • Try
      • S(C);
      • Vars
        • K(a);S_FLIGHT::QAR1(A)
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • P(b);
  • Actual
    • S(C);
    • Vars
      • K(a);S_FLIGHT::QAR1(A)
      • K(a);P-FLIGHT::QAR1(A)
      • K(a);S_FLIGHT,XS(C)::QAB1(A)
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).