MESON Chess Problem Database

Problem Display
PID: 79506 (8/8/8/8/5p2/4p3/3pR3/3Q1K1k w - - 0 1)

Tryssesoone, Louis

1st HM., Il Duale Miniature Ty., 1979

8/8/8/8/5p2/4p3/3pR3/3Q1K1k

#2

3 + 4

136 Problem Observer 2008
56 The Problemist 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Rxd2?
      • threat
        • 2.Qf3#
        • 2.Qh5#
      • 1...exd2
        • 2.Qh5#
      • 1...f3
        • 2.Qxf3#
      • 1...e2+!
    • 1.Rxe3?
      • threat
        • 2.Rh3#
        • 2.Qh5#
      • 1...Kh2
        • 2.Qh5#
      • 1...fxe3
        • 2.Qh5#
      • 1...f3!
  • Keys
    • 1.Rf2!
      • threat
        • 2.Ke2#
        • 2.Qf3#
        • 2.Qh5#
      • 1...e2+
        • 2.Kxe2#
      • 1...exf2
        • 2.Qh5#
      • 1...f3
        • 2.Qxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);XP(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(c);XR(C)::QAR(A)
        • P(d);::QAB(A),XP(d)
      • Refutation
        • P(c);CHECK
    • Try
      • R(C);XP(c)
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAR(A)
        • P(d);XR(C)::QAR(A)
      • Refutation
        • P(d);
  • Actual
    • R(C);
    • Threat
      • DUALS(3)
    • Vars
      • P(c);CHECK::QAR(A)+K(B),XP(c)
      • P(c);XR(C)::QAR(A)
      • P(d);::QAB(A),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).