MESON Chess Problem Database

Problem Display
PID: 122244 (8/4K3/p7/r3k3/1N3p1N/3P4/3Q4/b7 w - - 0 1)

Wheeler, Charles Henry

Checkmate, 1903

8/4K3/p7/r3k3/1N3p1N/3P4/3Q4/b7

#2

5 + 5

6490 yacpdb 2009
5454 Near Snap 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Sc6#
    • 1...Bb2
      • 2.Qxb2#
    • 1...Bc3
      • 2.Qxc3#
    • 1...f3
      • 2.Qe3#
  • Tries
    • 1.d4+?
      • 1...Ke4
        • 2.Qd3#
      • 1...Bxd4!
  • Keys
    • 1.Qc1!
      • 1...Kd4
        • 2.Sf3#
      • 1...Ra2
        • 2.Qc5#
      • 1...Ra3
        • 2.Qc5#
      • 1...Ra4
        • 2.Qc5#
      • 1...Rb5
        • 2.Qxa1#
      • 1...Rc5
        • 2.Qxc5#
      • 1...Rd5
        • 2.Sc6#
      • 1...Bb2
        • 2.Qxb2#
      • 1...Bc3
        • 2.Qxc3#
      • 1...Bd4
        • 2.Qc7#
      • 1...f3
        • 2.Qe3#

Anticipated by 62879(1888)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • R(c);SBLOCK::S(C)
    • B(a);N_GUARD::QAB(A),XB(a)
    • P(b);N_GUARD::QAR2(A)
  • Tries
    • Try
      • P(B);CHECK
      • Vars
        • K(d);P-FLIGHT::QAB1(A)
      • Refutation
        • B(a);XP(B)
  • Actual
    • Q(A);
    • Vars
      • K(d);S_FLIGHT::S(D)
      • R(c);N_GUARD::QAR2(A)
      • R(c);N_GUARD::QAB(A),XB(a)
      • R(c);N_GUARD::QAR2(A),XR(c)
      • R(c);SBLOCK::S(C)
      • B(a);N_GUARD::QAB(A),XB(a)
      • B(a);SBLOCK::QAB(A)
      • P(b);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).