MESON Chess Problem Database

Problem Display
PID: 53232 (nr1b4/2p5/2N3K1/1R1P3Q/P1k3B1/8/3Pp3/3nNbq1 w - - 0 1)

Holladay, Edgar Dinwiddie

Chess Life, 1955

nr1b4/2p5/2N3K1/1R1P3Q/P1k3B1/8/3Pp3/3nNbq1

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Sa5#
    • 1...Qxg4+
      • 2.Qxg4#
    • 1...Bg2
      • 2.Bxe2#
    • 1...Sc3
      • 2.d3#
  • Keys
    • 1.d6!
      • threat
        • 2.Qd5#
      • 1...Qxg4+
        • 2.Qxg4#
      • 1...Rxb5
        • 2.Qxb5#
      • 1...Qd4
        • 2.Sa5#
      • 1...Qc5
        • 2.Qxc5#
      • 1...Qh1
        • 2.Qc5#
      • 1...Qg2
        • 2.Qc5#
      • 1...Bg2
        • 2.Bxe2#
      • 1...Bg5
        • 2.Be6#
      • 1...Sc3
        • 2.d3#
      • 1...Se3
        • 2.Qc5#
      • 1...Sb6
        • 2.Rb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • Q(c);N_PINB(D),SBLOCK::S(H)
    • Q(c);CHECK,OGATE,XB(D)::QAR(G),XQ(c)
    • B(b);N_PINB(D)::B(D),XP(d)
    • S(a);SBLOCK::P(B)
  • Actual
    • P(F);
    • Threat
      • QAB1(G)
    • Vars
      • Q(c);CHECK,OGATE,XB(D)::QAR(G),XQ(c)
      • R(h);OGATE,XR(E)::QAB1(G),XR(h)
      • Q(c);N_PINB(D),SBLOCK::S(H)
      • Q(c);N_GUARD,N_PINB(D)::QAR1(G),XQ(c)
      • Q(c);N_GUARD,N_PINB(D)::QAR1(G)
      • Q(c);N_GUARD::QAR1(G)
      • B(b);N_PINB(D)::B(D),XP(d)
      • B(i);N_PINB(D)::B(D)
      • S(a);SBLOCK::P(B)
      • S(a);S_CUTQ(c)::QAR1(G)
      • S(g);S_CUTR(h)::R1(E)
HTML5 logo

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).