MESON Chess Problem Database

Problem Display
PID: 271509 (1B5b/1Q5B/1N2p1N1/3pr1p1/4k3/2K2p2/3P4/8 w - - 0 1)

Melvin, Herbert A ('Hamel' or Zaak, HA)

The Problemist, 1956

1B5b/1Q5B/1N2p1N1/3pr1p1/4k3/2K2p2/3P4/8

#2

7 + 7

SOLUTION

  • SOUND
  • Keys
    • 1.Sxd5!
      • threat
        • 2.Sxe5#
      • 1...Rxd5+
        • 2.Sxh8#
      • 1...Rf5+
        • 2.Sf6#
      • 1...Kf5
        • 2.Sxe5#
      • 1...exd5
        • 2.Qb1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Actual
    • S(C);XP(c)
    • Threat
      • B(F)+S(D),XR(d)
    • Vars
      • R(d);CHECK,N_GUARD,P_SPINR(d),XS(C)::B(F)+S(D),XB(g)
      • R(d);CHECK,SBLOCK::QAB(E)+S(C),DCHECK
      • K(b);S_FLIGHT::B(F)+S(D),XR(d)
      • P(f);P_SPINP(f),SBLOCK,XS(C)::QAB(E)
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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).