MESON Chess Problem Database

Problem Display
PID: 136253 (8/2nRpK2/1p2Q2p/1q1PNPN1/3k2p1/2RP2pr/2PP3b/3n3b w - - 0 1)

Bonivento, Oscar

L'Italia Scacchistica, 2002

8/2nRpK2/1p2Q2p/1q1PNPN1/3k2p1/2RP2pr/2PP3b/3n3b

#2

11 + 12

6490 yacpdb 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd3
      • 2.Sc6#
    • 1...Qc4
      • 2.Rxc4#
    • 1...Qa6
      • 2.Sc6#
    • 1...Qc6
      • 2.Sxc6#
    • 1...Qxd7
      • 2.Rc4#
    • 1...Qb1
      • 2.Sc6#
      • 2.Rc4#
    • 1...Qb2
      • 2.Sc6#
      • 2.Rc4#
    • 1...Qb3
      • 2.Sc6#
    • 1...Qb4
      • 2.Sc6#
    • 1...Qa5
      • 2.Sc6#
      • 2.Rc4#
    • 1...Qxd5
      • 2.Sc6#
      • 2.Rc4#
  • Tries
    • 1.Sef3+?
      • 1...gxf3
        • 2.Qe4#
      • 1...Bxf3!
    • 1.Sg6?
      • threat
        • 2.Qe5#
      • 1...Qxd5
        • 2.Rc4#
      • 1...Sxc3
        • 2.Qe3#
      • 1...Sxe6
        • 2.Sxe6#
      • 1...Qc4
        • 2.Rxc4#
      • 1...g2
        • 2.Qe4#
      • 1...Bxd5!
  • Keys
    • 1.Sxg4!
      • threat
        • 2.Qe5#
      • 1...Qxd5
        • 2.Rc4#
      • 1...Bxd5
        • 2.Sf3#
      • 1...Sxc3
        • 2.Qe3#
      • 1...Sxe6
        • 2.Sxe6#
      • 1...Qc4
        • 2.Rxc4#
      • 1...g2
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 6
  • Sets
    • Q(h);N_GUARD,XP(D)::S(F)
    • Q(h);N_GUARD::R1(C),XQ(h)
    • Q(h);N_GUARD::S(F)
    • Q(h);N_GUARD::S(F),XQ(h)
    • Q(h);N_GUARD,XR(J)::R1(C)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • P(g);XS(F)::QAR1(I)
      • Refutation
        • B(b);XS(F)
    • Try
      • S(F);
      • Threat
        • QAB1(I)
      • Vars
        • Q(h);N_GUARD,P_PINQ(I),P_SPINQ(h),XP(E)::R1(C)
        • S(a);N_GUARD,XR(C)::QAB1(I)
        • S(k);XQ(I)::S(H),XS(k)
        • Q(h);N_GUARD::R1(C),XQ(h)
        • P(d);S_CUTB(b)::QAR1(I)
      • Refutation
        • B(b);P_PINQ(I),P_SPINB(b),XP(E)
  • Actual
    • S(F);XP(g)
    • Threat
      • QAB1(I)
    • Vars
      • Q(h);N_GUARD,P_PINQ(I),P_SPINQ(h),XP(E)::R1(C)
      • B(b);N_GUARD,P_PINQ(I),P_SPINB(b),XP(E)::S(H)
      • S(a);N_GUARD,XR(C)::QAB1(I)
      • S(k);XQ(I)::S(H),XS(k)
      • Q(h);N_GUARD::R1(C),XQ(h)
      • P(d);S_CUTB(b)::QAR1(I)
HTML5 logo

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).