MESON Chess Problem Database

Problem Display
PID: 121719 (3n2K1/N2R1N2/1p2Qp2/q2P1P1p/RP1k1P2/6pr/r1nP3b/5B1b w - - 0 1)

Stocchi, Ottavio

Skakbladet, 1954

3n2K1/N2R1N2/1p2Qp2/q2P1P1p/RP1k1P2/6pr/r1nP3b/5B1b

#2

12 + 12

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qb5
      • 2.Sxb5#
    • 1...Qxd5
      • 2.Sb5#
    • 1...Be4
      • 2.Qxf6#
    • 1...Sa1
      • 2.Qe3#
    • 1...Se1
      • 2.Qe3#
    • 1...Sa3
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sxb4
      • 2.Qe3#
    • 1...Sc6
      • 2.Sxc6#
    • 1...Sb7
      • 2.Sc6#
    • 1...Sxf7
      • 2.Sc6#
  • Tries
    • 1.bxa5+?
      • 1...Kc5
        • 2.Rc4#
        • 2.Qxb6#
        • 2.Qd6#
        • 2.Qe7#
      • 1...Sb4
        • 2.Qe3#
      • 1...Rxa4!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Qxf6#
      • 1...Qxb4
        • 2.Qxb6#
      • 1...Qxd5
        • 2.Sb5#
      • 1...Bxd5
        • 2.Sf3#
      • 1...Sxb4
        • 2.Qe3#
      • 1...Sxe6
        • 2.Sc6#
      • 1...fxg5
        • 2.Qe5#
      • 1...Sc6
        • 2.Sxc6#
      • 1...Sf7
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • Q(h);N_GUARD::S(I),XQ(h)
    • Q(h);N_GUARD,P_SPINQ(h),XP(F)::S(I)
    • B(a);SBLOCK::QAB(H),XP(k)
    • S(c);N_GUARD::QAB1(H)
    • S(c);N_GUARD::QAB1(H),XS(c)
    • S(c);N_GUARD,P_SPINS(c),XP(D)::QAB1(H)
    • S(l);N_GUARD::S(I),XS(l)
    • S(l);N_GUARD::S(I)
    • S(l);N_GUARD,XS(K)::S(I)
  • Tries
    • Try
      • P(D);CHECK,XQ(h)
      • Vars
        • S(c);P_SPINS(c)::QAB1(H)
      • Refutation
        • R(b);XR(C)
  • Actual
    • S(K);
    • Threat
      • QAB(H),XP(k)
    • Vars
      • Q(h);N_GUARD,P_SPINQ(h),XP(D)::QAB(H),XP(j)
      • Q(h);N_GUARD,P_PINQ(H),P_SPINQ(h),XP(F)::S(I)
      • B(a);N_GUARD,P_PINQ(H),P_SPINB(a),XP(F)::S(K)
      • S(c);N_GUARD,P_SPINS(c),XP(D)::QAB1(H)
      • S(l);N_GUARD,XQ(H)::S(I)
      • P(k);N_GUARD,XS(K)::QAB1(H)
      • S(l);N_GUARD::S(I),XS(l)
      • S(l);N_GUARD::S(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).