MESON Chess Problem Database

Problem Display
PID: 264496 (3N3b/Q7/4pp1k/7p/p3b2p/r3N3/1B5K/1B4R1 w - - 0 1)

Bottacchi, Antonio

Il Problema, 1933

3N3b/Q7/4pp1k/7p/p3b2p/r3N3/1B5K/1B4R1

#2

7 + 9

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bh1
      • 2.Sf7#
      • 2.Rg6#
      • 2.Qh7#
    • 1...Bf3
      • 2.Sf7#
      • 2.Rg6#
      • 2.Qh7#
    • 1...Bd5
      • 2.Sf7#
      • 2.Rg6#
      • 2.Qh7#
    • 1...Bc6
      • 2.Sf7#
      • 2.Rg6#
      • 2.Qh7#
    • 1...Bg6
      • 2.Rxg6#
    • 1...Bb7
      • 2.Sf7#
    • 1...Bh7
      • 2.Sf7#
      • 2.Qxh7#
    • 1...Ba8
      • 2.Sf7#
      • 2.Rg6#
      • 2.Qh7#
    • 1...Bg7
      • 2.Qxg7#
  • Tries
    • 1.Bxe4?
      • threat
        • 2.Sf7#
        • 2.Rg6#
        • 2.Qh7#
      • 1...Bg7
        • 2.Sf7#
        • 2.Qxg7#
      • 1...f5!
    • 1.Qh7+?
      • 1...Bxh7
        • 2.Sf7#
      • 1...Kxh7!
  • Keys
    • 1.Bc1!
      • threat
        • 2.Sf5#
      • 1...Ra2+
        • 2.Sc2#
      • 1...Rxe3
        • 2.Bxe3#
      • 1...Bg2
        • 2.Sg4#
      • 1...Bg7
        • 2.Qxg7#
      • 1...Bf5
        • 2.Sxf5#
      • 1...Bb7
        • 2.Sf7#
      • 1...f5
        • 2.Sxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • B(c);N_GUARD::R1(B),XB(c)
    • B(c);::S(G)
    • B(i);N_GUARD::QAB1(F),XB(i)
  • Tries
    • Try
      • B(A);XB(c)
      • Threat
        • DUALS(3)
      • Refutation
        • P(g);
    • Try
      • Q(F);CHECK
      • Vars
        • B(c);XQ(F)::S(G)
      • Refutation
        • K(h);P-FLIGHT,P_SPINB(c),XQ(F)
  • Actual
    • B(C);
    • Threat
      • B(C)+S(E),DCHECK
    • Vars
      • R(a);CHECK,N_GUARD::B(C)+S(E)
      • R(a);OGATE,P_SPINR(a),XS(E)::B(C),XR(a)
      • B(c);::B(C)+S(E),DCHECK
      • B(i);N_GUARD::QAB1(F),XB(i)
      • B(c);::B(C)+S(E),DCHECK,XB(c)
      • B(c);::S(G)
      • P(g);::B(C)+S(E),DCHECK,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).