MESON Chess Problem Database

Problem Display
PID: 219484 (4n3/P4N2/p3p3/2k1B3/P2RQ3/bP3p1K/1n6/7B w - - 0 1)

Makaronets, Leonid

2nd Comm., Schach-Report, 1995

4n3/P4N2/p3p3/2k1B3/P2RQ3/bP3p1K/1n6/7B

#2

9 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...f2
      • 2.Qc6#
  • Tries
    • 1.Rd6?
      • threat
        • 2.Rc6#
        • 2.Qd4#
      • 1...Sxa4
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sxd6!
    • 1.Qb7?
      • 1...Sxa4
        • 2.Rc4#
      • 1...Sd1
        • 2.Rc4#
      • 1...Sd3
        • 2.Rc4#
      • 1...Sc4
        • 2.Rxc4#
      • 1...Sd6
        • 2.Qc7#
      • 1...Sf6
        • 2.Qc7#
      • 1...Sc7
        • 2.Qxc7#
      • 1...Sg7
        • 2.Qc7#
      • 1...f2
        • 2.Qc6#
      • 1...a5
        • 2.Qb5#
      • 1...Bb4!
  • Keys
    • 1.Rb4!
      • 1...Bxb4
        • 2.Bd4#
      • 1...Sxa4
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sd1
        • 2.Qc4#
      • 1...Sd3
        • 2.Qc4#
      • 1...Sd6
        • 2.Bxd6#
      • 1...Sf6
        • 2.Bd6#
      • 1...Sc7
        • 2.Bd6#
      • 1...Sg7
        • 2.Bd6#
      • 1...f2
        • 2.Qd4#
      • 1...a5
        • 2.Rb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • P(c);::QAR1(F)
  • Tries
    • Try
      • R(E);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD,XP(D)::QAR1(F)
        • S(a);N_GUARD::QAR1(F),XS(a)
      • Refutation
        • S(g);XR(E)
    • Try
      • Q(F);
      • Vars
        • S(a);N_GUARD,XP(D)::R1(E)
        • S(a);N_GUARD::R1(E)
        • S(a);N_GUARD::R1(E),XS(a)
        • S(g);N_GUARD::QAR2(F)
        • S(g);N_GUARD::QAR2(F),XS(g)
        • P(c);::QAR1(F)
        • P(e);N_GUARD::QAR1(F)
      • Refutation
        • B(b);
  • Actual
    • R(E);
    • Vars
      • B(b);SBLOCK,XR(E)::B(G)
      • S(a);N_GUARD,XP(D)::QAR1(F)
      • S(a);N_GUARD::QAR1(F),XS(a)
      • S(a);N_GUARD::QAR1(F)
      • S(g);N_GUARD::B(G),XS(g)
      • S(g);N_GUARD::B(G)
      • P(c);::QAB1(F)
      • P(e);N_GUARD::R1(E)
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).