MESON Chess Problem Database

Problem Display
PID: 202578 (b7/2pK1pn1/2p2N1Q/R2P1k2/6p1/3q2B1/2B5/2n5 w - - 0 1)

Belli, Nicolo

San Francisco Chronicle, 1923

b7/2pK1pn1/2p2N1Q/R2P1k2/6p1/3q2B1/2B5/2n5

#2

7 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qe4
      • 2.Bxe4#
      • 2.dxc6#
    • 1...Sa2
      • 2.Bxd3#
    • 1...Se2
      • 2.Bxd3#
    • 1...Sb3
      • 2.Bxd3#
  • Tries
    • 1.Qh5+?
      • 1...Kxf6
        • 2.Bh4#
        • 2.Be5#
      • 1...Sxh5!
  • Keys
    • 1.Se4!
      • threat
        • 2.Qh7#
      • 1...Qxd5+
        • 2.Sd6#
      • 1...Kxe4
        • 2.Qf4#
      • 1...Qxe4
        • 2.dxc6#
      • 1...Qxg3
        • 2.Qg5#
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • S(a);N_GUARD::B(A),XQ(b)
  • Tries
    • Try
      • Q(F);CHECK
      • Refutation
        • S(h);XQ(F)
  • Actual
    • S(E);N_PINQ(b)
    • Threat
      • QAB(F)
    • Vars
      • Q(b);CHECK,P_SPINQ(b),XP(D)::B(A)+S(E),DCHECK
      • K(d);P_SPINQ(b),S_FLIGHT,XS(E)::QAR1(F)
      • Q(b);N_PINP(D),P_SPINQ(b),XS(E)::R(C)+P(D),XP(e)
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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).