MESON Chess Problem Database

Problem Display
PID: 103953 (r5n1/2QR1B2/5P2/1R1N1N2/4k3/r1P3Pn/P7/4K2b w - - 0 1)

Janet, Frank

New York Sun, 1916

(First published on Sun Mar 5 1916)

r5n1/2QR1B2/5P2/1R1N1N2/4k3/r1P3Pn/P7/4K2b

#2

11 + 6

2642 Good Companions (February) 1917
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qe5+?
      • 1...Kd3
        • 2.Sb4#
        • 2.Qe2#
      • 1...Kf3
        • 2.Qe2#
      • 1...Kxe5!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Sde3#
        • 2.Sb4#
        • 2.Sf4#
        • 2.Sb6#
        • 2.Sc7#
        • 2.Sde7#
      • 1...Kd3
        • 2.Sb4#
      • 1...Kf3
        • 2.Sde3#
      • 1...Ke5
        • 2.Qe6#
      • 1...Kxf5
        • 2.Se3#
      • 1...Rxc3
        • 2.Sxc3#
      • 1...Sxf6
        • 2.Sxf6#
      • 1...R3a6
        • 2.Sb6#
      • 1...R8a6
        • 2.Sb6#
      • 1...Rc8
        • 2.Sc7#
      • 1...Sf4
        • 2.Sxf4#
      • 1...Se7
        • 2.Sdxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(I);CHECK
      • Vars
        • K(d);OGATE,S_FLIGHT::QAB1(I)
      • Refutation
        • K(d);P-FLIGHT,XQ(I)
  • Actual
    • Q(I);
    • Threat
      • DUALS(6)
    • Vars
      • K(d);S_FLIGHT::R(J)+S(F),DCHECK
      • K(d);S_FLIGHT::QAB(I)+S(F)
      • K(d);P-FLIGHT::QAR1(I)
      • K(d);S_FLIGHT,XS(G)::R(E)+S(F),DCHECK
      • R(b);XP(C)::QAB(I)+S(F),DCHECK,XR(b)
      • S(f);XP(H)::QAB(I)+S(F),DCHECK,XS(f)
      • R(b);::QAB(I)+S(F)
      • R(e);::QAB(I)+S(F)
      • S(c);::QAB(I)+S(F),XS(c)
      • S(f);::QAB(I)+S(F),XS(f)
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).