MESON Chess Problem Database

Problem Display
PID: 146105 (5R1K/4p1Qn/8/Np6/1N4n1/R1b1k3/p3p3/qb2B2B w - - 0 1)

Bottacchi, Antonio

9th Prize, L'Italia Scacchistica, 1918

5R1K/4p1Qn/8/Np6/1N4n1/R1b1k3/p3p3/qb2B2B

#2

8 + 10

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.Sd5#
    • 1...Se5
      • 2.Qg1#
    • 1...e5
      • 2.Qa7#
  • Tries
    • 1.Rxc3+?
      • 1...Bd3
        • 2.Sc2#
        • 2.Sd5#
        • 2.Rxd3#
      • 1...Qxc3!
    • 1.Qxc3+?
      • 1...Bd3
        • 2.Sc2#
        • 2.Sd5#
        • 2.Bd2#
      • 1...Qxc3+!
    • 1.Qe5+?
      • 1...Be4
        • 2.Rf3#
      • 1...Sxe5!
  • Keys
    • 1.Sac6!
      • threat
        • 2.Qd4#
      • 1...Sgf6
        • 2.Qg3#
      • 1...Shf6
        • 2.Qg5#
      • 1...Bd3
        • 2.Sd5#
      • 1...Se5
        • 2.Qg1#
      • 1...e5
        • 2.Qa7#

There are these versions: 266882

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • B(b);N_SPINB(e),SBLOCK::S(D)
    • S(g);N_PINQ(F)::QAB(F)
    • P(i);N_PINQ(F)::QAB(F)
  • Tries
    • Try
      • R(C);CHECK,N_SPINQ(F),XB(e)
      • Refutation
        • Q(a);P_PINQ(F),XR(C)
    • Try
      • Q(F);CHECK,XB(e)
      • Refutation
        • Q(a);CHECK,P_SPINQ(a),XQ(F)
    • Try
      • Q(F);CHECK
      • Vars
        • B(b);::R1(G)
      • Refutation
        • S(g);XQ(F)
  • Actual
    • S(E);
    • Threat
      • QAB1(F)
    • Vars
      • S(g);N_PINQ(F)::QAR2(F)
      • S(j);N_PINQ(F)::QAB(F)
      • B(b);N_SPINB(e),SBLOCK::S(D)
      • S(g);N_PINQ(F)::QAB(F)
      • P(i);N_PINQ(F)::QAB(F)
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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).