MESON Chess Problem Database

Problem Display
PID: 124319 (5R2/p2r1b2/2p3p1/2Rq1kN1/8/1Q5N/K3B3/B3n3 w - - 0 1)

Legentil, Georges

Problemes d'Echecs (Legentil), 1951

5R2/p2r1b2/2p3p1/2Rq1kN1/8/1Q5N/K3B3/B3n3

#2

8 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc5
      • 2.Qe6#
    • 1...Qe5
      • 2.Qe6#
    • 1...Rd8
      • 2.Rxf7#
  • Tries
    • 1.Rxd5+?
      • 1...Rxd5
        • 2.Rxf7#
      • 1...cxd5!
    • 1.Qxd5+?
      • 1...Rxd5
        • 2.Rxf7#
      • 1...cxd5!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Bg4#
      • 1...Qe5
        • 2.Qe6#
      • 1...Sf3
        • 2.Bd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • Q(b);N_SPINQ(b),XR(F)::QAB1(D)
    • Q(b);::QAB1(D)
    • R(g);N_GUARD::R(H),XB(h)
  • Tries
    • Try
      • R(F);CHECK,N_SPINQ(D),XQ(b)
      • Vars
        • R(g);XR(F)::R(H),XB(h)
      • Refutation
        • P(d);XR(F)
    • Try
      • Q(D);CHECK,XQ(b)
      • Vars
        • R(g);P_SPINR(g),XQ(D)::R(H),XB(h)
      • Refutation
        • P(d);P_SPINP(d),XQ(D)
  • Actual
    • Q(D);
    • Threat
      • B(C)
    • Vars
      • Q(b);::QAB1(D)
      • S(a);N_GUARD::B(C)
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).