MESON Chess Problem Database

Problem Display
PID: 58622 (3R4/2p3p1/np1BK3/1PP4n/RP1k1P2/1P1p3r/N2N1pP1/2Q5 w - - 0 1)

Battaglia, Emilio

Het Belgisch Schaakbord (L'Echiquier Belge), 1955

3R4/2p3p1/np1BK3/1PP4n/RP1k1P2/1P1p3r/N2N1pP1/2Q5

#2

13 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Re3+
      • 2.Be5#
    • 1...Sxf4+
      • 2.Bxf4#
    • 1...Sxc5+
      • 2.Bxc5#
    • 1...bxc5
      • 2.Bxc5#
  • Tries
    • 1.Sf3+?
      • 1...Ke4
        • 2.Sc3#
      • 1...Rxf3!
  • Keys
    • 1.Sf1!
      • threat
        • 2.Qc4#
      • 1...Re3+
        • 2.Qxe3#
      • 1...Sxf4+
        • 2.Qxf4#
      • 1...Sxc5+
        • 2.bxc5#
      • 1...Ke4
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(c);CHECK,SBLOCK::R(M)+B(K),DCHECK
    • S(e);CHECK,OGATE,XP(H)::R(M)+B(K),XS(e)
    • S(f);CHECK,OGATE,XP(J)::R(M)+B(K),DCHECK,XS(f)
    • P(g);OGATE,XP(J)::R(M)+B(K),DCHECK,XP(g)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(d);P-FLIGHT::S(B)
      • Refutation
        • R(c);XS(C)
  • Actual
    • S(C);
    • Threat
      • QAR1(A)
    • Vars
      • R(c);CHECK,N_GUARD::QAB1(A),XR(c)
      • S(e);CHECK,OGATE,XP(H)::QAR2(A),XS(e)
      • S(f);CHECK,OGATE,XP(J)::R(F)+P(G),XS(f)
      • K(d);P-FLIGHT::QAR2(A)
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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).