MESON Chess Problem Database

Problem Display
PID: 104613 (4K1N1/3p3n/4k3/8/4BQ2/5P2/8/8 w - - 0 1)

Subotic, Miroslav

Mezija, 1999

4K1N1/3p3n/4k3/8/4BQ2/5P2/8/8

#2

5 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sg5
      • 2.Qf6#
    • 1...Sf6+
      • 2.Qxf6#
    • 1...Sf8
      • 2.Qf6#
    • 1...d5
      • 2.Bf5#
    • 1...d6
      • 2.Qf5#
  • Tries
    • 1.Kd8?
      • 1...Sf6
        • 2.Qxf6#
      • 1...Sg5
        • 2.Qf6#
      • 1...Sf8
        • 2.Qf6#
      • 1...d6
        • 2.Qf5#
      • 1...d5!
    • 1.Sf6?
      • threat
        • 2.Bd5#
      • 1...d5
        • 2.Bxd5#
      • 1...Sxf6+!
    • 1.Se7?
      • threat
        • 2.Bd5#
      • 1...d5
        • 2.Bxd5#
      • 1...Sf6+!
    • 1.Bc6?
      • 1...Sf6+
        • 2.Qxf6#
      • 1...Sg5
        • 2.Qf6#
      • 1...Sf8
        • 2.Qf6#
      • 1...d5
        • 2.Bd7#
      • 1...d6
        • 2.Qe4#
      • 1...dxc6!
    • 1.Bxh7?
      • 1...d5
        • 2.Bf5#
        • 2.Qf6#
      • 1...d6
        • 2.Qe4#
        • 2.Qf5#
      • 1...Kd5!
    • 1.Ba8?
      • 1...Sf6+
        • 2.Qxf6#
      • 1...Sg5
        • 2.Qf6#
      • 1...Sf8
        • 2.Qf6#
      • 1...d6
        • 2.Qe4#
      • 1...d5!
    • 1.Qh6+?
      • 1...Sf6+
        • 2.Qxf6#
      • 1...Ke5!
  • Keys
    • 1.Bb7!
      • 1...Sf6+
        • 2.Qxf6#
      • 1...Sg5
        • 2.Qf6#
      • 1...Sf8
        • 2.Qf6#
      • 1...d5
        • 2.Bc8#
      • 1...d6
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::QAR1(C)
    • S(c);CHECK,N_GUARD::QAR1(C),XS(c)
    • P(b);SBLOCK::B(B)
    • P(b);SBLOCK::QAB1(C)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Vars
        • S(c);N_GUARD::QAR1(C),XS(c)
        • S(c);N_GUARD::QAR1(C)
        • P(b);SBLOCK::QAB1(C)
      • Refutation
        • P(b);
    • Try
      • S(E);
      • Threat
        • B(B)
      • Vars
        • P(b);::B(B),XP(b)
      • Refutation
        • S(c);CHECK,XS(E)
    • Try
      • S(E);
      • Threat
        • B(B)
      • Vars
        • P(b);::B(B),XP(b)
      • Refutation
        • S(c);CHECK
    • Try
      • B(B);
      • Vars
        • S(c);CHECK,N_GUARD::QAR1(C),XS(c)
        • S(c);N_GUARD::QAR1(C)
        • P(b);SBLOCK::B(B)
        • P(b);SBLOCK::QAR2(C)
      • Refutation
        • P(b);XB(B)
    • Try
      • B(B);XS(c)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(B);
      • Vars
        • S(c);CHECK,N_GUARD::QAR1(C),XS(c)
        • S(c);N_GUARD::QAR1(C)
        • P(b);SBLOCK::QAR2(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);CHECK
      • Vars
        • S(c);CHECK,N_GUARD,P_SPINS(c)::QAR1(C),XS(c)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(B);
    • Vars
      • S(c);CHECK,N_GUARD::QAR1(C),XS(c)
      • S(c);N_GUARD::QAR1(C)
      • P(b);OGATEB,SBLOCK::B(B)
      • P(b);SBLOCK::QAR2(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).