MESON Chess Problem Database

Problem Display
PID: 228869 (3BB3/6pp/p5Rb/Rq3k1N/4rP2/2nQ4/5N2/5Kn1 w - - 0 1)

Cristoffanini, Guido

Chemnitzer Tageblatt, 1926

3BB3/6pp/p5Rb/Rq3k1N/4rP2/2nQ4/5N2/5Kn1

#2

9 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Rxe5#
      • 2.Qd7#
    • 1...Sge2
      • 2.Qh3#
    • 1...Sce2
      • 2.Qxe4#
    • 1...hxg6
      • 2.Bd7#
  • Tries
    • 1.Bg5?
      • threat
        • 2.Sg3#
      • 1...hxg6
        • 2.Bd7#
      • 1...Sge2
        • 2.Qh3#
      • 1...Sce2
        • 2.Qxe4#
      • 1...Bxg5!
    • 1.Rxb5+?
      • 1...Sxb5
        • 2.Qxe4#
      • 1...Sd5
        • 2.Rxd5#
        • 2.Qxe4#
      • 1...axb5!
  • Keys
    • 1.Bc7!
      • threat
        • 2.Sg3#
      • 1...Bxf4
        • 2.Sxg7#
      • 1...hxg6
        • 2.Bd7#
      • 1...Qe5
        • 2.Rxe5#
        • 2.Qd7#
      • 1...Sge2
        • 2.Qh3#
      • 1...Sce2
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(a);N_PINQ(C)::QAB(C)
    • S(b);N_PINQ(C)::QAB1(C),XR(c)
    • P(i);SBLOCK,XR(G)::B(I)
  • Tries
    • Try
      • B(H);
      • Threat
        • S(F)
      • Vars
        • P(i);SBLOCK,XR(G)::B(I)
        • S(a);N_PINQ(C)::QAB(C)
        • S(b);N_PINQ(C)::QAB1(C),XR(c)
      • Refutation
        • B(g);XB(H)
    • Try
      • R(E);CHECK,N_SPINQ(C),XQ(d)
      • Vars
        • S(b);XR(E)::QAB1(C),XR(c)
      • Refutation
        • P(f);XR(E)
  • Actual
    • B(H);
    • Threat
      • S(F)
    • Vars
      • B(g);N_GUARD,XP(D)::S(F),XP(h)
      • P(i);SBLOCK,XR(G)::B(I)
      • S(a);N_PINQ(C)::QAB(C)
      • S(b);N_PINQ(C)::QAB1(C),XR(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).