MESON Chess Problem Database

Problem Display
PID: 287315 (5B2/3p2r1/3bB3/2p1NPN1/3k1rbR/2pPp1K1/4P3/Q7 w - - 0 1)

Caponetti, Raffaele A

Probleemblad, 1959

5B2/3p2r1/3bB3/2p1NPN1/3k1rbR/2pPp1K1/4P3/Q7

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Bxg7#
    • 1...Rf3+
      • 2.Sxf3#
    • 1...Bf3
      • 2.Sxf3#
    • 1...Bh3
      • 2.Sf3#
    • 1...Bxf5
      • 2.Sf3#
  • Tries
    • 1.Qa2?
      • threat
        • 2.Qd5#
      • 1...Rf3+
        • 2.Sxf3#
      • 1...Kxe5
        • 2.Bxg7#
      • 1...dxe6
        • 2.Sc6#
      • 1...c2
        • 2.Qa1#
        • 2.Qb2#
      • 1...Bf3
        • 2.Sxf3#
      • 1...c4!
    • 1.Qa4+?
      • 1...Kxe5
        • 2.Bxg7#
      • 1...c4!
    • 1.Qa8?
      • threat
        • 2.Qd5#
      • 1...Rf3+
        • 2.Sxf3#
      • 1...Kxe5
        • 2.Bxg7#
      • 1...c2
        • 2.Qa1#
      • 1...Bf3
        • 2.Sxf3#
      • 1...dxe6!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Qd5#
      • 1...Rf3+
        • 2.Sxf3#
      • 1...Kxe5
        • 2.Bxg7#
      • 1...dxe6
        • 2.Sc6#
      • 1...c2
        • 2.Qa1#
      • 1...Re4
        • 2.Qxe4#
      • 1...Bf3
        • 2.Sxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • K(c);OGATEB,S_FLIGHT,XS(F)::B(J),XR(i)
    • R(d);CHECK,N_GUARD,P_PINS(F),P_SPINB(e)::S(H),XR(d)
    • B(e);N_GUARD,P_PINS(H),P_SPINR(d)::S(F),XB(e)
    • B(e);N_GUARD,P_PINS(H),P_SPINR(d)::S(F)
    • B(e);N_GUARD,P_PINS(H),P_SPINR(d),XP(G)::S(F)
  • Tries
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAR1(A)
      • Vars
        • R(d);CHECK,N_GUARD,P_PINS(F),P_SPINB(e)::S(H),XR(d)
        • K(c);OGATEB,S_FLIGHT,XS(F)::B(J),XR(i)
        • P(h);N_GUARD,XB(I)::S(F)
        • B(e);N_GUARD,P_PINS(H),P_SPINR(d)::S(F),XB(e)
      • Refutation
        • P(f);
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Vars
        • K(c);S_CUTP(f),S_FLIGHT,XS(F)::B(J),XR(i)
      • Refutation
        • P(f);P_SPINP(f)
    • Try
      • Q(A);N_PINP(a)
      • Threat
        • QAR1(A)
      • Vars
        • R(d);CHECK,N_GUARD,P_PINS(F),P_SPINB(e)::S(H),XR(d)
        • K(c);OGATEB,S_FLIGHT,XS(F)::B(J),XR(i)
        • P(a);OGATEB::QAB(A)
        • B(e);N_GUARD,P_PINS(H),P_SPINR(d)::S(F),XB(e)
      • Refutation
        • P(h);XB(I)
  • Actual
    • Q(A);N_PINP(a)
    • Threat
      • QAR1(A)
    • Vars
      • R(d);CHECK,N_GUARD,P_PINS(F),P_SPINB(e)::S(H),XR(d)
      • K(c);OGATEB,S_FLIGHT,XS(F)::B(J),XR(i)
      • P(h);N_GUARD,XB(I)::S(F)
      • P(a);OGATEB::QAB(A)
      • R(d);N_GUARD,P_PINS(F)::QAR1(A),XR(d)
      • B(e);N_GUARD,P_PINS(H),P_SPINR(d)::S(F),XB(e)
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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).