MESON Chess Problem Database

Problem Display
PID: 18049 (n1Q2b2/8/2Nk4/q2P3r/1NpB3p/5P1K/8/3R4 w - - 0 1)

Woodward, LA

Time & Tide, 1952

n1Q2b2/8/2Nk4/q2P3r/1NpB3p/5P1K/8/3R4

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qxb4
      • 2.Qd8#
    • 1...Qc7
      • 2.Qe6#
    • 1...Qd8
      • 2.Qxd8#
    • 1...Qa1
      • 2.Qd8#
    • 1...Qa2
      • 2.Qd8#
    • 1...Qa3
      • 2.Qd8#
    • 1...Qa4
      • 2.Qd8#
    • 1...Qb5
      • 2.Qd8#
    • 1...Qc5
      • 2.Qd8#
    • 1...Qa6
      • 2.Qd8#
    • 1...Sc7
      • 2.Qd8#
  • Tries
    • 1.Bc5+?
      • 1...Qxc5
        • 2.Qd8#
      • 1...Kxc5!
  • Keys
    • 1.Sa6!
      • threat
        • 2.Qe6#
      • 1...Kxd5
        • 2.Bc3#
      • 1...Qxd5
        • 2.Bc5#
      • 1...Qxa6
        • 2.Qd8#
      • 1...Rxd5
        • 2.Be5#
      • 1...Qe1
        • 2.Bc5#
        • 2.Qd8#
      • 1...Re5
        • 2.Bxe5#
      • 1...Rh6
        • 2.Be5#
      • 1...Sc7
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 9
  • Sets
    • Q(c);N_GUARD,XS(D)::QAR2(H)
    • Q(c);SBLOCK::QAR1(H)
    • Q(c);N_GUARD::QAR2(H),XQ(c)
    • Q(c);N_GUARD::QAR2(H)
    • Q(c);N_GUARD,P_PINP(B)::QAR2(H)
    • S(f);S_CUTQ(c)::QAR2(H)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • Q(c);SBLOCK,XB(E)::QAR2(H)
      • Refutation
        • K(e);S_FLIGHT,XB(E)
  • Actual
    • S(D);
    • Threat
      • QAR1(H)
    • Vars
      • K(e);OGATEB,P-FLIGHT,XP(F)::R(A)+B(E)
      • Q(c);N_GUARD,XP(F)::B(E)
      • Q(c);N_GUARD,XS(D)::QAR2(H)
      • R(d);N_GUARD,XP(F)::B(E)
      • R(d);N_GUARD::B(E),XR(d)
      • R(d);N_GUARD::B(E)
      • S(f);S_CUTQ(c)::QAR2(H)
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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).