MESON Chess Problem Database

Problem Display
PID: 208044 (8/1R2N3/rb6/k4p1K/3rqPpP/P1N3P1/1Pn5/3Q4 w - - 0 1)

Klark, Dmitry Vasilevich

Vsemirnaya Illustrantiya, 1873

8/1R2N3/rb6/k4p1K/3rqPpP/P1N3P1/1Pn5/3Q4

#2

10 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qd3
      • 2.Sc6#
    • 1...Qc6
      • 2.Sxc6#
    • 1...Qe1
      • 2.Sc6#
    • 1...Qe2
      • 2.Sc6#
    • 1...Qe3
      • 2.Sc6#
    • 1...Qxf4
      • 2.Sc6#
    • 1...Qe5
      • 2.Sc6#
    • 1...Rd5
      • 2.Sc6#
    • 1...Bc5
      • 2.Rb5#
    • 1...Ba7
      • 2.Rb5#
    • 1...Bc7
      • 2.Rb5#
    • 1...Bd8
      • 2.Rb5#
    • 1...Sb4
      • 2.Qa4#
  • Tries
    • 1.b4+?
      • 1...Sxb4
        • 2.Qa4#
      • 1...Rxb4!
  • Keys
    • 1.Qxd4!
      • 1...Qxb7
        • 2.Qa4#
      • 1...Qxd4
        • 2.Sc6#
      • 1...Qxf4
        • 2.Sc6#
      • 1...Qxe7
        • 2.Qa4#
      • 1...Bxd4
        • 2.Rb5#
      • 1...Sxa3
        • 2.b4#
      • 1...Sxd4
        • 2.b4#
      • 1...Ra7
        • 2.Qxb6#
      • 1...Ra8
        • 2.Qxb6#
      • 1...Qd5
        • 2.Qa4#
      • 1...Qh1
        • 2.Qa4#
      • 1...Qg2
        • 2.Qa4#
      • 1...Qd3
        • 2.Sc6#
        • 2.Qa4#
      • 1...Qf3
        • 2.Qa4#
      • 1...Qc6
        • 2.Sxc6#
      • 1...Qe1
        • 2.Sc6#
        • 2.Qa4#
      • 1...Qe2
        • 2.Sc6#
        • 2.Qa4#
      • 1...Qe3
        • 2.Sc6#
        • 2.Qa4#
      • 1...Qe5
        • 2.Sc6#
        • 2.Qa4#
      • 1...Qe6
        • 2.Qa4#
      • 1...Bc5
        • 2.Rb5#
        • 2.Qxc5#
      • 1...Ba7
        • 2.Rb5#
      • 1...Bc7
        • 2.Rb5#
        • 2.Qc5#
      • 1...Bd8
        • 2.Rb5#
        • 2.Qc5#
      • 1...Sa1
        • 2.b4#
      • 1...Se1
        • 2.b4#
      • 1...Se3
        • 2.b4#
      • 1...Sb4
        • 2.axb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 16
    • REMOVED MATES = 9
  • Sets
    • Q(c);N_GUARD::S(J)
    • Q(c);N_GUARD::S(J),XQ(c)
    • Q(c);N_GUARD,XP(F)::S(J)
    • R(b);S_CUTQ(c)::S(J)
    • B(h);OGATE::R1(I)
    • S(a);OGATE::QAR1(A)
  • Tries
    • Try
      • P(B);CHECK
      • Vars
        • S(a);OGATE,XP(B)::QAR1(A)
      • Refutation
        • R(b);XP(B)
  • Actual
    • Q(A);XR(b)
    • Vars
      • Q(c);N_GUARD,XR(I)::QAR1(A)
      • Q(c);N_GUARD,XQ(A)::S(J)
      • Q(c);N_GUARD,XP(F)::S(J)
      • Q(c);N_GUARD,XS(J)::QAR1(A)
      • B(h);OGATE,XQ(A)::R1(I)
      • S(a);N_GUARD,XP(C)::P(B)
      • S(a);N_GUARD,XQ(A)::P(B)
      • R(g);N_GUARD::QAB1(A),XB(h)
      • Q(c);N_GUARD::QAR1(A)
      • Q(c);N_GUARD,P_PINP(G)::QAR1(A)
      • Q(c);N_GUARD::S(J),XQ(c)
      • B(h);OGATE::R1(I)
      • S(a);N_GUARD::P(B)
      • S(a);OGATE::P(C),XS(a)
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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).