MESON Chess Problem Database

Problem Display
PID: 174205 (3RQ1B1/2q2r2/7p/2pP1P1K/P2k1pN1/2Rp2N1/1P3n2/8 w - - 0 1)

Buchner, Richard

Volkstimme, 1925

3RQ1B1/2q2r2/7p/2pP1P1K/P2k1pN1/2Rp2N1/1P3n2/8

#2

11 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qa5
      • 2.Qe5#
    • 1...Qe5
      • 2.Qxe5#
    • 1...Qb6
      • 2.Qe5#
    • 1...Qxd8
      • 2.Qe5#
    • 1...Qc6
      • 2.Qe5#
    • 1...Qa7
      • 2.Qe5#
    • 1...Qb7
      • 2.Qe5#
    • 1...Qd7
      • 2.Qe5#
    • 1...Qc8
      • 2.Qe5#
    • 1...Rxf5+
      • 2.Sxf5#
    • 1...Sd1
      • 2.Qe4#
    • 1...Sh1
      • 2.Qe4#
    • 1...Sh3
      • 2.Qe4#
    • 1...Se4
      • 2.Qxe4#
    • 1...Sxg4
      • 2.Qe4#
    • 1...d2
      • 2.Se2#
    • 1...fxg3
      • 2.Qe3#
    • 1...f3
      • 2.Qe3#
  • Tries
    • 1.Rxd3+?
      • 1...Kc4
        • 2.Qb5#
      • 1...Sxd3
        • 2.Qe4#
      • 1...Kxd3!
  • Keys
    • 1.d6!
      • threat
        • 2.Qe5#
      • 1...Rxf5+
        • 2.Sxf5#
      • 1...Kd5
        • 2.dxc7#
      • 1...Sxg4
        • 2.Qe4#
      • 1...Qe7
        • 2.dxe7#
      • 1...Re7
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 16
  • Sets
    • Q(g);N_GUARD::QAB1(J)
    • Q(g);N_GUARD,P_PINP(G)::QAB1(J),XQ(g)
    • Q(g);N_GUARD,XR(I)::QAB1(J)
    • R(h);CHECK,XP(G)::S(C),XR(h)
    • S(a);N_GUARD::QAR1(J)
    • S(a);N_GUARD::QAR1(J),XS(a)
    • S(a);N_GUARD,XS(E)::QAR1(J)
    • P(b);N_GUARD::S(C)
    • P(d);N_GUARD,XS(C)::QAB1(J)
    • P(d);N_GUARD::QAB1(J)
  • Tries
    • Try
      • R(B);CHECK,XP(b)
      • Vars
        • K(c);P-FLIGHT::QAB1(J)
        • S(a);XR(B)::QAR1(J)
      • Refutation
        • K(c);P-FLIGHT,XR(B)
  • Actual
    • P(F);
    • Threat
      • QAB1(J)
    • Vars
      • R(h);CHECK,XP(G)::S(C),XR(h)
      • K(c);P-FLIGHT,P_SPINR(h)::R(I)+P(F),XQ(g)
      • S(a);N_GUARD,XS(E)::QAR1(J)
      • Q(g);OGATE::R(I)+P(F),XQ(g)
      • R(h);::R1(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).