MESON Chess Problem Database

Problem Display
PID: 124422 (5NB1/4pR2/KP1k4/1P1pppq1/8/2P2PN1/7B/3RQ3 w - - 0 1)

Vogel, Peter

Source?, 0000

5NB1/4pR2/KP1k4/1P1pppq1/8/2P2PN1/7B/3RQ3

#2

12 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...e4
      • 2.Sxe4#
    • 1...f4
      • 2.Se4#
  • Tries
    • 1.Qxe5+?
      • 1...Kc5
        • 2.Qc7#
        • 2.Qxd5#
      • 1...Kxe5!
  • Keys
    • 1.Qe4!
      • threat
        • 2.Rxd5#
        • 2.Qxd5#
        • 2.Qb4#
      • 1...Kc5
        • 2.Rxd5#
        • 2.Qxd5#
        • 2.Qb4#
      • 1...fxe4
        • 2.Sxe4#
      • 1...Qd2
        • 2.Qb4#
      • 1...Qe3
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Qf4
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Qh4
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...Qg4
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...d4
        • 2.Qc6#
      • 1...e6
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • P(b);::B(C)+S(F),DCHECK,XP(b)
    • P(c);N_GUARD::S(F)
  • Tries
    • Try
      • Q(B);CHECK,XP(b)
      • Refutation
        • K(e);N_SPINP(a),S_FLIGHT,XQ(B)
  • Actual
    • Q(B);
    • Threat
      • DUALS(3)
    • Vars
      • P(c);XQ(B)::S(F),XP(c)
      • Q(d);N_SPINP(a)::QAB(B)
      • P(a);OGATE::QAR1(B)
      • P(f);::QAB(B)
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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).