MESON Chess Problem Database

Problem Display
PID: 237657 (3Q4/3PK3/2p5/1Bp5/R4P2/4k3/1Pp1N1PP/2bbB1Nq w - - 0 1)

Maleika, Gerhard

Variantim, 2019

3Q4/3PK3/2p5/1Bp5/R4P2/4k3/1Pp1N1PP/2bbB1Nq

#2

12 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Bf2+?
      • 1...Kd2
        • 2.Sf3#
        • 2.Qa5#
      • 1...Kxf2!
    • 1.Qg8?
      • threat
        • 2.Qb3#
        • 2.Qe6#
        • 2.Qg3#
      • 1...Qxg2
        • 2.Qb3#
      • 1...Qxh2
        • 2.Qb3#
        • 2.Qe6#
      • 1...Bxb2
        • 2.Qg3#
      • 1...Bxe2
        • 2.Qe6#
      • 1...cxb5
        • 2.Qb3#
        • 2.Qg3#
      • 1...Bd2
        • 2.Qe6#
        • 2.Qg3#
      • 1...c4!
  • Keys
    • 1.Qh8!
      • threat
        • 2.Qc3#
        • 2.Qe5#
        • 2.Qh3#
      • 1...Qxg2
        • 2.Qc3#
      • 1...Qxh2
        • 2.Qc3#
        • 2.Qe5#
      • 1...Bxb2
        • 2.Qh3#
      • 1...Bxe2
        • 2.Qe5#
      • 1...cxb5
        • 2.Qc3#
        • 2.Qh3#
      • 1...c4
        • 2.Qd4#
      • 1...Bd2
        • 2.Qe5#
        • 2.Qh3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(A);CHECK
      • Refutation
        • K(e);S_FLIGHT,XB(A)
    • Try
      • Q(L);
      • Threat
        • DUALS(3)
      • Vars
        • Q(c);XP(E)::QAR(L)
        • B(a);XP(C)::QAR2(L)
        • B(b);XS(D)::QAR(L)
      • Refutation
        • P(f);
  • Actual
    • Q(L);
    • Threat
      • DUALS(3)
    • Vars
      • Q(c);XP(E)::QAR2(L)
      • B(a);XP(C)::QAR(L)
      • B(b);XS(D)::QAR2(L)
      • P(f);N_GUARD::QAB1(L)
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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).