MESON Chess Problem Database

Problem Display
PID: 59212 (8/1Bp1R3/q1p4K/2PbB1P1/rp1Nk2N/r7/3Qp3/2n5 w - - 0 1)

Rietveld, Johannes Jacob

2nd Prize, Brisbane Courier, 1921-1922

8/1Bp1R3/q1p4K/2PbB1P1/rp1Nk2N/r7/3Qp3/2n5

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Qf4#
    • 1...Rd3
      • 2.Qf4#
    • 1...Sd3
      • 2.Qxe2#
  • Tries
    • 1.Sc2?
      • threat
        • 2.Qd4#
      • 1...Qd3
        • 2.Qf4#
      • 1...Rd3
        • 2.Qf4#
      • 1...Sb3
        • 2.Qe3#
      • 1...Sd3
        • 2.Qe3#
        • 2.Qxe2#
      • 1...b3
        • 2.Qe3#
      • 1...Qc4!
    • 1.Sdf5?
      • threat
        • 2.Qd4#
      • 1...Qd3
        • 2.Qf4#
      • 1...Rd3
        • 2.Qf4#
      • 1...Sb3
        • 2.Sg3#
        • 2.Qe3#
      • 1...Sd3
        • 2.Sg3#
        • 2.Qe3#
        • 2.Qxe2#
      • 1...b3
        • 2.Sg3#
        • 2.Qe3#
      • 1...Qc4!
  • Keys
    • 1.Sb5!
      • threat
        • 2.Qd4#
      • 1...cxb5+
        • 2.Bd6#
      • 1...Rd3
        • 2.Qf4#
      • 1...Sb3
        • 2.Qxe2#
      • 1...Sd3
        • 2.Qxe2#
      • 1...b3
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • Q(h);SBLOCK::QAR1(A)
    • R(c);SBLOCK::QAR1(A)
    • S(a);N_GUARD,S_CUTQ(h),S_CUTR(c)::QAR2(A),XP(b)
  • Tries
    • Try
      • S(B);
      • Threat
        • QAR1(A)
      • Vars
        • Q(h);SBLOCK::QAR1(A)
        • R(c);SBLOCK::QAR1(A)
        • S(a);S_CUTR(c)::QAR1(A)
        • P(e);S_CUTR(c)::QAR1(A)
      • Refutation
        • Q(h);
    • Try
      • S(B);
      • Threat
        • QAR1(A)
      • Vars
        • Q(h);SBLOCK::QAR1(A)
        • R(c);SBLOCK::QAR1(A)
      • Refutation
        • Q(h);
  • Actual
    • S(B);
    • Threat
      • QAR1(A)
    • Vars
      • P(i);CHECK,P_SPINB(g),XS(B)::R(I)+B(E)
      • R(c);SBLOCK::QAR1(A)
      • S(a);N_GUARD,S_CUTR(c)::QAR2(A),XP(b)
      • P(e);N_GUARD,S_CUTR(c)::S(B)
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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).