MESON Chess Problem Database

Problem Display
PID: 80881 (8/K7/2B5/N4p2/n2k4/P1r5/1np2P2/B1N1Q3 w - - 0 1)

Bottacchi, Antonio

1st HM., L'Italia Scacchistica, 1918

8/K7/2B5/N4p2/n2k4/P1r5/1np2P2/B1N1Q3

#2

8 + 6

3391 Het Half Pin Thema 1924
56 The Problemist 1937
14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qe5#
    • 1...Re3
      • 2.Qxe3#
    • 1...Rc4
      • 2.Sab3#
      • 2.Qe3#
    • 1...Rc5
      • 2.Qe3#
    • 1...Sd3
      • 2.Scb3#
      • 2.Qe3#
    • 1...Sc4
      • 2.Sab3#
  • Tries
    • 1.Scb3+?
      • 1...Kd3
        • 2.Qd2#
        • 2.Qf1#
        • 2.Qe3#
      • 1...Rxb3!
    • 1.Sab3+?
      • 1...Kc4
        • 2.Qe6#
      • 1...Rxb3!
    • 1.Qe4+?
      • 1...Kc5
        • 2.Sb7#
        • 2.Qd5#
        • 2.Qb4#
        • 2.Qe5#
      • 1...fxe4!
  • Keys
    • 1.f4!
      • threat
        • 2.Qe5#
      • 1...Kc5
        • 2.Qe5#
      • 1...Re3
        • 2.Qb4#
      • 1...Rc5
        • 2.Qd2#
      • 1...Sd3
        • 2.Scb3#
      • 1...Sc4
        • 2.Sab3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(e);S_FLIGHT::QAR2(C)
    • R(c);N_GUARD,P_SPINS(a)::QAB1(C),XR(c)
    • R(c);N_GUARD,P_SPINS(a),SBLOCK::QAB1(C)
    • S(a);P_SPINR(c),SBLOCK::S(F)
  • Tries
    • Try
      • S(B);CHECK
      • Refutation
        • R(c);P_SPINS(a),XS(B)
    • Try
      • S(F);CHECK
      • Vars
        • K(e);P-FLIGHT::QAB(C)
      • Refutation
        • R(c);P_SPINS(a),XS(F)
    • Try
      • Q(C);CHECK
      • Refutation
        • P(f);XQ(C)
  • Actual
    • P(D);
    • Threat
      • QAB1(C)
    • Vars
      • K(e);S_FLIGHT::QAR2(C)
      • R(c);OGATE,P_SPINS(a),SBLOCK::QAR2(C)
      • R(c);N_GUARD,P_SPINS(a),SBLOCK::QAR2(C)
      • S(a);P_SPINR(c),SBLOCK::S(B)
      • S(a);P_SPINR(c),SBLOCK::S(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).