MESON Chess Problem Database

Problem Display
PID: 129822 (r3k3/p2N2Q1/Kn1P2p1/3B2b1/2n5/8/8/8 w - - 0 1)

Solarczyk, Rudolf

Ruch, 1947

r3k3/p2N2Q1/Kn1P2p1/3B2b1/2n5/8/8/8

#2

5 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rd8
      • 2.Qf7#
    • 1...Bc1
      • 2.Qe7#
    • 1...Bd2
      • 2.Qe7#
    • 1...Be3
      • 2.Qe7#
    • 1...Bf4
      • 2.Qe7#
    • 1...Bh6
      • 2.Qe7#
    • 1...Be7
      • 2.Qxe7#
    • 1...Bd8
      • 2.Qf7#
  • Tries
    • 1.Sf6+?
      • 1...Kd8
        • 2.Qf8#
        • 2.Qh8#
        • 2.Qc7#
        • 2.Qg8#
      • 1...Bxf6!
    • 1.Be6?
      • threat
        • 2.Qf8#
        • 2.Qh8#
        • 2.Qg8#
      • 1...Kd8
        • 2.Qf8#
        • 2.Qh8#
        • 2.Qg8#
      • 1...Sxd6
        • 2.Qf8#
      • 1...Bf6
        • 2.Qf8#
        • 2.Qg8#
      • 1...Bh6
        • 2.Qe7#
      • 1...Be7
        • 2.Qxe7#
      • 1...Sxd7!
  • Keys
    • 1.Bc6!
      • threat
        • 2.Qf8#
        • 2.Qg8#
      • 1...Kd8
        • 2.Qf8#
        • 2.Qh8#
        • 2.Qg8#
      • 1...Sxd6
        • 2.Qf8#
      • 1...Sxd7
        • 2.Qg8#
      • 1...Bh6
        • 2.Qe7#
      • 1...Be7
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(f);SBLOCK::QAB1(E)
    • B(b);N_GUARD::QAR1(E)
    • B(b);N_GUARD::QAR1(E),XB(b)
    • B(b);SBLOCK::QAB1(E)
  • Tries
    • Try
      • S(D);CHECK
      • Refutation
        • B(b);XS(D)
    • Try
      • B(A);
      • Threat
        • DUALS(3)
      • Vars
        • S(a);XP(C)::QAR1(E)
        • B(b);N_GUARD::QAR1(E)
        • B(b);N_GUARD::QAR1(E),XB(b)
      • Refutation
        • S(c);XS(D)
  • Actual
    • B(A);
    • Threat
      • DUALS(2)
    • Vars
      • S(a);XP(C)::QAR1(E)
      • S(c);P_SPINS(c),XS(D)::QAR2(E)
      • B(b);N_GUARD::QAR1(E)
      • B(b);N_GUARD::QAR1(E),XB(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).