MESON Chess Problem Database

Problem Display
PID: 174229 (3n1R2/2rp1b2/6pN/r1pQ4/p4k2/4p1pP/KB3qP1/n4R2 w - - 0 1)

Buchner, Rudolf

Volkstimme Chemnitz, 1927

3n1R2/2rp1b2/6pN/r1pQ4/p4k2/4p1pP/KB3qP1/n4R2

#2

8 + 13

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qf3
      • 2.Rxf3#
    • 1...Sb3
      • 2.Qe5#
    • 1...Sc6
      • 2.Rxf7#
    • 1...Se6
      • 2.Rxf7#
      • 2.Qe5#
    • 1...Sb7
      • 2.Rxf7#
    • 1...e2
      • 2.Bc1#
    • 1...g5
      • 2.Qc4#
  • Tries
    • 1.Sxf7?
      • threat
        • 2.Sxd8#
        • 2.Qe5#
      • 1...Sxf7
        • 2.Rxf7#
        • 2.Qe5#
      • 1...e2
        • 2.Bc1#
        • 2.Qe5#
      • 1...c4
        • 2.Sxd8#
      • 1...Ra6
        • 2.Qe5#
      • 1...Rc6
        • 2.Qe5#
      • 1...Sc6
        • 2.Sg5#
        • 2.Sd6#
        • 2.Sh6#
        • 2.Sd8#
        • 2.Sh8#
      • 1...Se6
        • 2.Qe5#
      • 1...Sb7
        • 2.Sg5#
        • 2.Sd6#
        • 2.Sh6#
        • 2.Sd8#
        • 2.Sh8#
        • 2.Qe5#
      • 1...d6!
    • 1.Rxf2+?
      • 1...exf2
        • 2.Bc1#
      • 1...gxf2!
  • Keys
    • 1.h4!
      • threat
        • 2.Qc4#
      • 1...Qxf1
        • 2.Be5#
      • 1...e2
        • 2.Bc1#
      • 1...c4
        • 2.Qd4#
      • 1...Sc2
        • 2.Be5#
      • 1...Sb3
        • 2.Qe5#
      • 1...Sc6
        • 2.Rxf7#
      • 1...Se6
        • 2.Rxf7#
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • Q(b);N_PINB(C),OGATE::R1(A),XQ(b)
    • S(a);N_PINQ(F)::QAB1(F)
    • S(m);N_GUARD::R(H),XB(l)
    • P(c);N_PINB(C)::B(C)
    • P(i);SBLOCK::QAR(F)
  • Tries
    • Try
      • S(G);N_SPINQ(F),XB(l)
      • Threat
        • DUALS(2)
      • Vars
        • P(h);::R(H)+S(G),XS(m)
        • R(g);::QAB1(F)
        • R(j);::QAB1(F)
        • S(m);::QAB1(F)
      • Refutation
        • P(k);
    • Try
      • R(A);CHECK,N_SPINB(C),XQ(b)
      • Vars
        • P(c);S_CUTP(d),XR(A)::B(C)
      • Refutation
        • P(d);XR(A)
  • Actual
    • P(E);
    • Threat
      • QAR(F)
    • Vars
      • Q(b);N_PINB(C),N_SPINQ(b),XR(A)::B(C)
      • P(c);N_PINB(C)::B(C)
      • P(h);N_PINQ(F)::QAR2(F)
      • S(a);N_PINB(C)::B(C)
      • S(a);N_PINQ(F)::QAB1(F)
      • S(m);N_GUARD::R(H),XB(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).