MESON Chess Problem Database

Problem Display
PID: 90351 (1BBK4/1Q6/5N2/4P1b1/R7/3Nppk1/5pbp/8 w - - 0 1)

Stocchi, Ottavio

Die Schwalbe, 1932

1BBK4/1Q6/5N2/4P1b1/R7/3Nppk1/5pbp/8

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxf6+
      • 2.exf6#
    • 1...Bh6
      • 2.Sh5#
  • Tries
    • 1.e6+?
      • 1...Kh3
        • 2.e7#
      • 1...Bf4!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Rg4#
      • 1...Bxf6+
        • 2.exf6#
      • 1...Bh3
        • 2.Qxh3#
      • 1...Bf4
        • 2.Se4#
      • 1...Bh4
        • 2.Qxh4#
      • 1...Bh6
        • 2.Sh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(g);CHECK,OGATE,XS(D)::B(F)+P(C),XB(g)
    • B(g);N_PINS(D)::S(D)
  • Tries
    • Try
      • P(C);CHECK
      • Vars
        • K(f);P-FLIGHT::B(G)+P(C)
      • Refutation
        • B(g);N_PINS(D),P_SPINB(g)
  • Actual
    • Q(E);
    • Threat
      • R1(B)
    • Vars
      • B(g);CHECK,OGATE,XS(D)::B(F)+P(C),XB(g)
      • B(b);N_GUARD::QAR1(E),XB(b)
      • B(g);N_PINS(D)::S(D)
      • B(g);N_GUARD::QAB1(E),XB(g)
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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).