MESON Chess Problem Database

Problem Display
PID: 174261 (1K6/6R1/4pkNP/Rn2p3/q3n2P/5Nb1/7Q/1B6 w - - 0 1)

Buchner, Rudolf

Die Schwalbe, 1939

1K6/6R1/4pkNP/Rn2p3/q3n2P/5Nb1/7Q/1B6

#2

9 + 7

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Be1
      • 2.Qxe5#
    • 1...Bf2
      • 2.Qxe5#
    • 1...Bxh4
      • 2.Qxe5#
    • 1...Sg5
      • 2.hxg5#
  • Tries
    • 1.Sfxe5?
      • threat
        • 2.Rf7#
      • 1...Bxe5+
        • 2.Qxe5#
      • 1...Kf5
        • 2.Rf7#
      • 1...Bxh4
        • 2.Qf4#
      • 1...Sed6
        • 2.Sd7#
      • 1...Sbd6
        • 2.Sg4#
      • 1...Sg5!
  • Keys
    • 1.Sgxe5!
      • threat
        • 2.Rf7#
      • 1...Bxe5+
        • 2.Qxe5#
      • 1...Kf5
        • 2.Rf7#
      • 1...Sg5
        • 2.hxg5#
      • 1...Sed6
        • 2.Sd7#
      • 1...Sbd6
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • B(a);OGATE::QAB1(B),XP(e)
    • B(a);OGATE,XP(D)::QAB1(B),XP(e)
    • S(c);OGATE::P(D),XS(c)
  • Tries
    • Try
      • S(C);P_SPINS(C),XP(e)
      • Threat
        • R1(H)
      • Vars
        • B(a);CHECK,OGATE,XS(C)::QAB1(B),XB(a)
        • K(g);P-FLIGHT,P_SPINS(c)::R(H)
        • B(a);N_PINS(C),OGATE,XP(D)::QAR2(B)
        • S(c);N_PINS(C)::S(C)
        • S(d);N_PINS(C)::S(C)
      • Refutation
        • S(c);
  • Actual
    • S(F);P_SPINS(F),XP(e)
    • Threat
      • R1(H)
    • Vars
      • B(a);CHECK,OGATE,XS(F)::QAB1(B),XB(a)
      • K(g);P-FLIGHT,P_SPINS(c)::R(H)
      • S(c);OGATE::P(D),XS(c)
      • S(c);N_PINS(F)::S(F)
      • S(d);N_PINS(F)::S(F)
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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).