MESON Chess Problem Database

Problem Display
PID: 207541 (8/8/8/8/1P1B4/bp1N4/k3n2K/1bQN4 w - - 0 1)

Klark, Dmitry Vasilevich

Vsemirnaya Illustrantiya, 1872

8/8/8/8/1P1B4/bp1N4/k3n2K/1bQN4

#2

6 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Bc2
      • 2.Qa1#
    • 1...Bxd3
      • 2.Qa1#
    • 1...Bb2
      • 2.Qxb2#
    • 1...Bxb4
      • 2.Sxb4#
      • 2.Qb2#
  • Tries
    • 1.Sc3+?
      • 1...Ka1
        • 2.Qxb1#
      • 1...Sxc3!
  • Keys
    • 1.Bb2!
      • 1...Bxd3
        • 2.Qa1#
      • 1...Bxb2
        • 2.Qxb2#
      • 1...Bxb4
        • 2.Sxb4#
      • 1...Sxc1
        • 2.Sc3#
        • 2.Sxc1#
      • 1...Bc2
        • 2.Qa1#
      • 1...Sg1
        • 2.Sc3#
      • 1...Sc3
        • 2.Sxc3#
      • 1...Sg3
        • 2.Sc3#
      • 1...Sd4
        • 2.Sc3#
      • 1...Sf4
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • B(a);OGATE::QAR1(A)
    • B(a);OGATE,XS(D)::QAR1(A)
    • B(d);N_GUARD::QAR1(A),XB(d)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(b);P-FLIGHT,P_SPINB(a)::QAR1(A),XB(a)
      • Refutation
        • S(c);XS(B)
  • Actual
    • B(F);
    • Vars
      • B(a);OGATE,XS(D)::QAR1(A)
      • B(d);OGATE,XB(F)::QAR1(A),XB(d)
      • B(d);XP(E)::S(D),XB(d)
      • B(a);OGATE::QAR1(A)
      • S(c);N_GUARD::S(B)
      • S(c);N_GUARD::S(B),XS(c)
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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).