MESON Chess Problem Database

Problem Display
PID: 176216 (B5q1/1NBpp1p1/3N3r/PP1k3b/1P3Q2/KP3Pn1/n3P3/2r5 w - - 0 1)

Tura, Waldemar

Schach-Echo, 1972

B5q1/1NBpp1p1/3N3r/PP1k3b/1P3Q2/KP3Pn1/n3P3/2r5

#2

12 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.Sc5#
    • 1...Qf7
      • 2.Sc5#
    • 1...Qh7
      • 2.Sc5#
    • 1...Ra1
      • 2.Sd8#
    • 1...Rb1
      • 2.Sd8#
    • 1...Rd1
      • 2.Sd8#
    • 1...Re1
      • 2.Sd8#
    • 1...Rf1
      • 2.Sd8#
    • 1...Rg1
      • 2.Sd8#
    • 1...Rh1
      • 2.Sd8#
    • 1...Be8
      • 2.Sc5#
    • 1...Sc3
      • 2.Sd8#
    • 1...Sf1
      • 2.Qe4#
    • 1...Sh1
      • 2.Qe4#
    • 1...Sxe2
      • 2.Qe4#
    • 1...Se4
      • 2.Qxe4#
    • 1...Sf5
      • 2.Qe4#
  • Tries
    • 1.Se8?
      • threat
        • 2.Qe5#
      • 1...Ke6
        • 2.Sd8#
      • 1...Rxc7
        • 2.Sxc7#
      • 1...Qe6
        • 2.Qd2#
      • 1...Re6
        • 2.Qd2#
      • 1...d6
        • 2.Sc5#
      • 1...e5
        • 2.Qxe5#
      • 1...Rd6!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qe5#
      • 1...Ke6
        • 2.Sc5#
      • 1...Qe6
        • 2.Sbd6#
        • 2.Qd2#
      • 1...Re6
        • 2.Qd2#
      • 1...d6
        • 2.Sd8#
      • 1...e5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 17
  • Sets
    • Q(j);N_GUARD::B(L)+S(J)
    • R(a);N_GUARD::B(L)+S(J)
    • B(e);S_CUTQ(j)::B(L)+S(J)
    • S(b);S_CUTR(a)::B(L)+S(J)
    • S(c);N_GUARD::QAB1(F)
    • S(c);N_GUARD,XP(A)::QAB1(F)
    • S(c);N_GUARD::QAB1(F),XS(c)
  • Tries
    • Try
      • S(I);
      • Threat
        • QAR1(F)
      • Vars
        • K(d);S_FLIGHT::S(J)
        • R(a);XB(K)::S(I),XR(a)
        • Q(j);SBLOCK::QAR(F)
        • R(f);SBLOCK::QAR(F)
        • P(g);S_CUTR(f)::B(L)+S(J)
        • P(h);::QAR1(F),XP(h)
      • Refutation
        • R(f);
  • Actual
    • S(I);
    • Threat
      • QAR1(F)
    • Vars
      • K(d);S_FLIGHT::S(J)
      • R(f);SBLOCK::QAR(F)
      • P(g);S_CUTR(f)::B(L)+S(J)
      • P(h);::QAR1(F),XP(h)
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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).