MESON Chess Problem Database

Problem Display
PID: 17346 (q3RNK1/8/2p3N1/2Bk3b/8/3P1n2/5Qn1/2b1r1rB w - - 0 1)

Holladay, Edgar Dinwiddie

Comm., Christian Science Monitor, 1946

q3RNK1/8/2p3N1/2Bk3b/8/3P1n2/5Qn1/2b1r1rB

#2

8 + 9

14773 The Best American Chess Problems of 1946 1948

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Rd8#
    • 1...Qa2
      • 2.Rd8#
    • 1...Qa3
      • 2.Rd8#
    • 1...Qa4
      • 2.Rd8#
    • 1...Qa6
      • 2.Rd8#
    • 1...Qd8
      • 2.Rxd8#
    • 1...Se3
      • 2.Re5#
    • 1...Sf4
      • 2.Qd4#
    • 1...Sgh4
      • 2.Qd4#
    • 1...Sd2
      • 2.Sf4#
      • 2.Qd4#
    • 1...Sh2
      • 2.Qd4#
    • 1...Sd4
      • 2.Qxd4#
    • 1...Sfh4
      • 2.Qd4#
    • 1...Se5
      • 2.Se7#
      • 2.Qd4#
    • 1...Sg5
      • 2.Qd4#
  • Tries
    • 1.Re5+?
      • 1...Sxe5
        • 2.Se7#
        • 2.Qd4#
      • 1...Rxe5!
  • Keys
    • 1.Qc2!
      • threat
        • 2.Qc4#
      • 1...Qa2
        • 2.Rd8#
      • 1...Qa4
        • 2.Rd8#
      • 1...Qa6
        • 2.Rd8#
      • 1...Re4
        • 2.dxe4#
      • 1...Se3
        • 2.Re5#
      • 1...Sd2
        • 2.Sf4#
      • 1...Se5
        • 2.Se7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • Q(i);N_GUARD::R(F)
    • Q(i);N_GUARD::R(F),XQ(i)
    • S(d);P_PINS(E),P_SPINS(e),S_CUTR(b)::R1(F)
    • S(d);P_PINS(E),P_SPINS(e)::QAR1(B)
    • S(e);N_GUARD,P_SPINS(d)::QAR1(B)
    • S(e);N_GUARD,P_SPINS(d)::QAR1(B),XS(e)
  • Tries
    • Try
      • R(F);CHECK,P_SPINS(G)
      • Refutation
        • R(b);XR(F)
  • Actual
    • Q(B);
    • Threat
      • QAB1(B)
    • Vars
      • Q(i);N_GUARD::R(F)
      • R(b);OGATE::P(C),XR(b)
      • S(d);P_PINS(E),P_SPINS(e),S_CUTR(b)::R1(F)
      • S(e);P_SPINS(d),S_CUTB(a)::S(E)
      • S(e);P_SPINS(d),SBLOCK,S_CUTR(b)::S(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).