MESON Chess Problem Database

Problem Display
PID: 144756 (K2n4/Bn2Q3/2kpp3/br2q2p/PpP5/3N4/8/8 w - - 0 1)

Rice, John Michael

Chess, 1954

K2n4/Bn2Q3/2kpp3/br2q2p/PpP5/3N4/8/8

#2

6 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.axb5#
    • 1...Qb2
      • 2.axb5#
    • 1...Qh2
      • 2.axb5#
    • 1...Qc3
      • 2.axb5#
    • 1...Qg3
      • 2.axb5#
    • 1...Qd4
      • 2.axb5#
    • 1...Qf4
      • 2.axb5#
    • 1...Qf6
      • 2.axb5#
    • 1...Qg7
      • 2.axb5#
    • 1...Qh8
      • 2.axb5#
    • 1...Qe1
      • 2.axb5#
    • 1...Qe2
      • 2.axb5#
    • 1...Qe3
      • 2.axb5#
    • 1...Qe4
      • 2.axb5#
    • 1...Bc7
      • 2.Qe8#
    • 1...Sc5
      • 2.axb5#
    • 1...d5
      • 2.Sxe5#
      • 2.axb5#
      • 2.cxb5#
  • Tries
    • 1.Sxe5+?
      • 1...dxe5
        • 2.axb5#
      • 1...Rxe5!
  • Keys
    • 1.Kb8!
      • threat
        • 2.Qe8#
      • 1...Bc7+
        • 2.Qxc7#
      • 1...Sc5+
        • 2.axb5#
      • 1...d5+
        • 2.Sxe5#
      • 1...Qg7
        • 2.axb5#
      • 1...Qh8
        • 2.axb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 12
  • Sets
    • Q(d);N_GUARD::P(B),XR(c)
    • B(b);SBLOCK::QAB(E)
    • S(i);S_CUTQ(d)::P(B),XR(c)
  • Tries
    • Try
      • S(A);CHECK,XQ(d)
      • Vars
        • P(g);XS(A)::P(B),XR(c)
      • Refutation
        • R(c);XS(A)
  • Actual
    • K(F);P-FLIGHT
    • Threat
      • QAB(E)
    • Vars
      • B(b);CHECK,N_GUARD::QAR1(E),XB(b)
      • S(i);CHECK,S_CUTQ(d)::P(B),XR(c)
      • P(g);CHECK,N_GUARD,S_CUTR(c)::S(A),XQ(d)
      • Q(d);N_GUARD::P(B),XR(c)
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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).