MESON Chess Problem Database

Problem Display
PID: 114201 (5B2/qp6/p1k1P3/p2N1P1K/2p5/2Q2N2/br4B1/b7 w - - 0 1)

Stocchi, Ottavio

Caissa, 1953

5B2/qp6/p1k1P3/p2N1P1K/2p5/2Q2N2/br4B1/b7

#2

8 + 9

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Sd2#
    • 1...Qd4
      • 2.Sxd4#
    • 1...Qb8
      • 2.Sd4#
    • 1...Qa8
      • 2.Sd4#
    • 1...Rb5
      • 2.Se5#
    • 1...Rb6
      • 2.Sd4#
  • Tries
    • 1.Qxc4+?
      • 1...Qc5
        • 2.Sd4#
        • 2.Se5#
        • 2.Qxc5#
      • 1...Bxc4!
  • Keys
    • 1.Qg7!
      • threat
        • 2.Qd7#
      • 1...Kb5
        • 2.Qd7#
      • 1...Kxd5
        • 2.Sd2#
      • 1...b5
        • 2.Se5#
      • 1...b6
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • K(g);N_SPINP(d),S_FLIGHT,XS(D)::B(A)+S(C)
    • Q(h);N_GUARD::S(C),XQ(h)
    • Q(h);N_GUARD::S(C)
    • R(c);SBLOCK::S(C)
    • R(c);S_CUTQ(h)::S(C)
  • Tries
    • Try
      • Q(B);CHECK,XP(d)
      • Refutation
        • B(b);XQ(B)
  • Actual
    • Q(B);N_PINP(d)
    • Threat
      • QAB1(B)
    • Vars
      • K(g);S_FLIGHT::QAB(B)
      • K(g);S_FLIGHT,XS(D)::B(A)+S(C)
      • P(i);SBLOCK::S(C)
      • P(i);S_CUTQ(h)::S(C)
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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).