MESON Chess Problem Database

Problem Display
PID: 137308 (3R4/2p5/1Pp2pp1/PPk3PP/Ppp4K/1R1p4/8/2Q2Bb1 w - - 0 1)

Watson, Charles Gilbert Marriott

Australasian Chess Magazine, 1920

3R4/2p5/1Pp2pp1/PPk3PP/Ppp4K/1R1p4/8/2Q2Bb1

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Qe3#
    • 1...Be3
      • 2.Qxe3#
    • 1...d2
      • 2.Qxc4#
    • 1...fxg5+
      • 2.Qxg5#
  • Keys
    • 1.Qf4!
      • 1...Bf2+
        • 2.Qxf2#
      • 1...fxg5+
        • 2.Qxg5#
      • 1...cxb3
        • 2.Qc1#
      • 1...cxb5
        • 2.Qxc7#
      • 1...gxh5
        • 2.Qf5#
      • 1...cxb6
        • 2.Qd6#
      • 1...Bh2
        • 2.Qe3#
        • 2.Qf2#
        • 2.Qd4#
      • 1...Be3
        • 2.Qxe3#
      • 1...Bd4
        • 2.Qxd4#
      • 1...d2
        • 2.Qxc4#
      • 1...c3
        • 2.Qxb4#
      • 1...f5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::QAB(A)
    • B(a);N_GUARD::QAB(A),XB(a)
    • P(b);::QAR1(A),XP(d)
    • P(g);CHECK,OGATE,XP(H)::QAR(A),XP(g)
  • Actual
    • Q(A);N_PINP(d)
    • Vars
      • B(a);CHECK,N_GUARD::QAB(A),XB(a)
      • P(g);CHECK,OGATE,XP(H)::QAR(A),XP(g)
      • P(d);OGATEB,XR(C)::QAR(A)
      • P(f);OGATEB,XP(G)::QAR2(A),XP(i)
      • P(h);N_GUARD,XP(I)::QAR(A)
      • P(i);N_GUARD,XP(J)::QAB1(A)
      • B(a);N_GUARD::QAB(A),XB(a)
      • B(a);N_GUARD::QAB1(A),XB(a)
      • P(b);::QAR1(A),XP(d)
      • P(d);OGATE::QAB1(A),XP(c)
      • P(g);N_GUARD::QAR2(A)
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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).