MESON Chess Problem Database

Problem Display
PID: 150325 (B7/8/5P2/2k5/K6Q/b7/1P6/8 w - - 0 1)

Agarkov, Anatoly Yakovlevich

Sa ogneupory, 1990

B7/8/5P2/2k5/K6Q/b7/1P6/8

#2

5 + 2

15148 Sadier Collection 2014
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bxb2
      • 2.Qb4#
    • 1...Bb4
      • 2.Qxb4#
  • Tries
    • 1.Ka5?
      • 1...Bb4+
        • 2.Qxb4#
      • 1...Bxb2
        • 2.Qb4#
      • 1...Kd6!
    • 1.Qe4?
      • 1...Kd6
        • 2.Qe7#
      • 1...Bxb2
        • 2.Qb4#
      • 1...Bb4
        • 2.Qxb4#
      • 1...Kb6!
    • 1.Qf4?
      • 1...Bxb2
        • 2.Qb4#
      • 1...Bb4
        • 2.Qxb4#
      • 1...Kb6!
  • Keys
    • 1.Qe1!
      • 1...Kc4
        • 2.Qc3#
      • 1...Kd4
        • 2.Qc3#
      • 1...Kb6
        • 2.Qa5#
      • 1...Kd6
        • 2.Qe7#
      • 1...Bxb2
        • 2.Qb4#
      • 1...Bb4
        • 2.Qxb4#

Anticipated by 108498(1989)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • B(a);N_GUARD,XP(A)::QAB1(C)
    • B(a);N_GUARD::QAB1(C),XB(a)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • B(a);CHECK,N_GUARD::QAB1(C),XB(a)
        • B(a);N_GUARD,XP(A)::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
        • B(a);N_GUARD,XP(A)::QAB1(C)
        • B(a);N_GUARD::QAB1(C),XB(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • B(a);N_GUARD,XP(A)::QAB1(C)
        • B(a);N_GUARD::QAB1(C),XB(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(b);P-FLIGHT::QAR1(C)
      • K(b);S_FLIGHT::QAB1(C)
      • B(a);N_GUARD,XP(A)::QAB1(C)
      • B(a);N_GUARD::QAB1(C),XB(a)
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).