MESON Chess Problem Database

Problem Display
PID: 166369 (1b6/8/6p1/1r4Q1/1P1PknP1/p3P2p/KN1P2r1/2N2R1B w - - 0 1)

Colaneri, Bruno

Best Problems, 2017

1b6/8/6p1/1r4Q1/1P1PknP1/p3P2p/KN1P2r1/2N2R1B

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ba7
      • 2.Rxf4#
    • 1...Se2
      • 2.d3#
    • 1...Sd5
      • 2.Qxg6#
      • 2.d3#
    • 1...Sh5
      • 2.d3#
    • 1...Se6
      • 2.d3#
  • Tries
    • 1.Se2?
      • threat
        • 2.Sc3#
        • 2.Sg3#
      • 1...Rxg5
        • 2.Sc3#
      • 1...Sxe2
        • 2.d3#
      • 1...Re5
        • 2.Sc3#
      • 1...Rf5
        • 2.Sc3#
      • 1...Be5
        • 2.Sc3#
      • 1...Rc5
        • 2.Sg3#
      • 1...Sd3
        • 2.Sc3#
      • 1...Sd5
        • 2.Qxg6#
        • 2.d3#
      • 1...Sh5
        • 2.Sc3#
        • 2.d3#
      • 1...Se6
        • 2.Sc3#
        • 2.d3#
      • 1...axb2!
    • 1.Sd1?
      • threat
        • 2.Sc3#
      • 1...Se2
        • 2.d3#
      • 1...Sd5
        • 2.Qxg6#
      • 1...Rc5!
    • 1.Bxg2+?
      • 1...Sxg2
        • 2.d3#
      • 1...hxg2!
  • Keys
    • 1.Sa4!
      • threat
        • 2.Sc3#
      • 1...Rc5
        • 2.Sxc5#
      • 1...Se2
        • 2.d3#
      • 1...Sd5
        • 2.Qxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(h);N_GUARD::R1(B),XS(e)
    • S(e);N_GUARD::P(F)
  • Tries
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(f);XQ(K)::S(A)
        • S(e);N_GUARD,XS(A)::P(F)
        • R(f);::S(A)
        • B(h);::S(A)
        • S(e);::S(A)
      • Refutation
        • P(b);XS(E)
    • Try
      • S(E);P_SPINP(F)
      • Threat
        • S(E)
      • Vars
        • S(e);N_PINP(F)::P(F)
        • S(e);N_GUARD,SBLOCK,S_CUTR(f)::QAB(K),XP(g)
      • Refutation
        • R(f);
    • Try
      • B(C);CHECK,XR(a)
      • Vars
        • S(e);XB(C)::P(F)
      • Refutation
        • P(c);XB(C)
  • Actual
    • S(E);P_SPINP(F)
    • Threat
      • S(E)
    • Vars
      • R(f);N_GUARD::S(E),XR(f)
      • S(e);N_PINP(F)::P(F)
      • S(e);N_GUARD,SBLOCK,S_CUTR(f)::QAB(K),XP(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).