MESON Chess Problem Database

Problem Display
PID: 271960 (2Q5/5N2/3N2p1/1p1P4/1BBk3r/b2n3p/3Pn3/1K6 w - - 0 1)

Ivanov, V?

Shakhmatnaya kompozitsiya, 1998

2Q5/5N2/3N2p1/1p1P4/1BBk3r/b2n3p/3Pn3/1K6

#2

8 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Sxb5#
    • 1...Sec1
      • 2.Bc3#
    • 1...Sg1
      • 2.Bc3#
    • 1...Sc3+
      • 2.Bxc3#
    • 1...Sg3
      • 2.Bc3#
    • 1...Sef4
      • 2.Bc3#
    • 1...Sdc1
      • 2.Qc5#
    • 1...Se1
      • 2.Qc5#
    • 1...Sb2
      • 2.Qc5#
    • 1...Sf2
      • 2.Qc5#
    • 1...Sdf4
      • 2.Qc5#
    • 1...Sc5
      • 2.Qxc5#
    • 1...Se5
      • 2.Qc5#
    • 1...bxc4
      • 2.Qxc4#
  • Tries
    • 1.Qe8?
      • threat
        • 2.Qe3#
      • 1...Sc3+
        • 2.dxc3#
      • 1...Re4
        • 2.Qxe4#
      • 1...Se5
        • 2.Qxe5#
      • 1...bxc4!
    • 1.Qh8+?
      • 1...Se5
        • 2.Qxe5#
      • 1...Rxh8!
  • Keys
    • 1.Qe6!
      • threat
        • 2.Qe3#
      • 1...Sc3+
        • 2.dxc3#
      • 1...bxc4
        • 2.Sb5#
      • 1...Re4
        • 2.Qxe4#
      • 1...Se5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 0
    • REMOVED MATES = 10
  • Sets
    • R(f);SBLOCK::S(F),XP(g)
    • S(a);N_GUARD::B(C)
    • S(a);CHECK,N_GUARD::B(C),XS(a)
    • S(c);N_GUARD::QAB1(H)
    • S(c);N_GUARD::QAB1(H),XS(c)
    • P(g);OGATE,XB(D)::QAR1(H),XP(g)
  • Tries
    • Try
      • Q(H);
      • Threat
        • QAB1(H)
      • Vars
        • S(a);CHECK,OGATE::P(B),XS(a)
        • R(f);N_GUARD::QAR1(H),XR(f)
        • S(c);N_GUARD::QAB1(H),XS(c)
      • Refutation
        • P(g);XB(D)
    • Try
      • Q(H);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::QAB1(H),XS(c)
      • Refutation
        • R(f);XQ(H)
  • Actual
    • Q(H);
    • Threat
      • QAB1(H)
    • Vars
      • S(a);CHECK,OGATE::P(B),XS(a)
      • P(g);SBLOCK,XB(D)::S(F)
      • R(f);N_GUARD::QAR1(H),XR(f)
      • S(c);N_GUARD::QAB1(H),XS(c)
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).