MESON Chess Problem Database

Problem Display
PID: 16929 (r3k2r/1p1npn2/3P4/4N1B1/2Q5/8/R6R/4K3 w qk - 0 1)

Wenman, Francis Percival (aka Percy Wenman)

One Hundred Published Problems, 1944

r3k2r/1p1npn2/3P4/4N1B1/2Q5/8/R6R/4K3

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kf8
      • 2.Qxf7#
    • 1...Rd8
      • 2.Qxf7#
    • 1...exd6
      • 2.Qxf7#
  • Tries
    • 1.Rxa8+?
      • 1...Sd8
        • 2.Qf7#
      • 1...Sb8!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qxe7#
      • 1...Kd8
        • 2.Qxd7#
      • 1...Kf8
        • 2.Qxf7#
      • 1...0-0
        • 2.Qg6#
      • 1...0-0-0
        • 2.Ra8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • K(f);P-FLIGHT::QAR1(D),XS(d)
    • R(e);SBLOCK::QAB1(D),XS(d)
    • P(c);XP(G)::QAB1(D),XS(d)
  • Tries
    • Try
      • R(B);CHECK,XR(e)
      • Vars
        • S(d);P_SPINS(d)::QAB1(D)
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • Q(D);P_PINP(c)
    • Threat
      • QAR1(D),XP(c)
    • Vars
      • K(f);P-FLIGHT::QAR1(D),XS(b)
      • K(f);N_SPINP(c),P-FLIGHT::QAR1(D),XS(d)
      • K(f);0-0,N_SPINP(c),OGATEB,P_SPINS(d)::QAR2(D)
      • K(f);0-0-0,N_SPINP(c),P_SPINS(b)::R(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).