MESON Chess Problem Database

Problem Display
PID: 121021 (2K5/5pP1/1b3N1B/3pk2n/R2N4/8/1P6/2Q5 w - - 0 1)

Bodochko, V

Khliborob Ukrani, 1970

2K5/5pP1/1b3N1B/3pk2n/R2N4/8/1P6/2Q5

#2

8 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf6
      • 2.Qg5#
    • 1...Sg3
      • 2.Qf4#
    • 1...Sf4
      • 2.Qxf4#
    • 1...Sxf6
      • 2.Qf4#
    • 1...Sxg7
      • 2.Qf4#
  • Tries
    • 1.Kd7?
      • threat
        • 2.Qg5#
      • 1...Kxf6
        • 2.Qg5#
      • 1...Sxg7
        • 2.Qf4#
      • 1...Sg3
        • 2.Qf4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Sxf6+!
    • 1.Sg4+?
      • 1...Ke4
        • 2.Qe3#
        • 2.Qb1#
        • 2.Qc2#
      • 1...Kd6!
    • 1.Sd7+?
      • 1...Ke4
        • 2.Qe3#
        • 2.Qb1#
        • 2.Qc2#
      • 1...Kd6!
    • 1.Se8?
      • threat
        • 2.Qe3#
        • 2.Qe1#
      • 1...Ke4
        • 2.Qe3#
      • 1...Ba5
        • 2.Qe3#
      • 1...Sg3
        • 2.Qf4#
      • 1...Sf4
        • 2.Qe3#
        • 2.Qxf4#
      • 1...Sf6
        • 2.Qf4#
      • 1...Bxd4!
    • 1.Qe3+?
      • 1...Kxf6
        • 2.Qg5#
      • 1...Kd6!
    • 1.Qc7+?
      • 1...Kxf6
        • 2.Qd6#
      • 1...Bxc7!
  • Keys
    • 1.Ra6!
      • 1...Kxd4
        • 2.Qc3#
      • 1...Kd6
        • 2.Qc7#
      • 1...Kxf6
        • 2.Qg5#
      • 1...Bxd4
        • 2.Qg5#
      • 1...Sxf6
        • 2.Qf4#
      • 1...Sxg7
        • 2.Qf4#
      • 1...Ba5
        • 2.Qe3#
      • 1...Bc5
        • 2.Qe3#
      • 1...Ba7
        • 2.Qe3#
      • 1...Bc7
        • 2.Qe3#
      • 1...Bd8
        • 2.Qe3#
      • 1...Sg3
        • 2.Qf4#
      • 1...Sf4
        • 2.Qxf4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT,XS(E)::QAB1(A)
    • S(c);N_GUARD::QAB1(A)
    • S(c);N_GUARD::QAB1(A),XS(c)
    • S(c);N_GUARD,XS(E)::QAB1(A)
    • S(c);N_GUARD,XP(G)::QAB1(A)
  • Tries
    • Try
      • K(H);S_FLIGHT
      • Threat
        • QAR2(A)
      • Vars
        • K(b);S_FLIGHT,XS(E)::QAB1(A)
        • S(c);N_GUARD,XP(G)::QAB1(A)
        • S(c);N_GUARD::QAB1(A)
        • S(c);N_GUARD::QAB1(A),XS(c)
      • Refutation
        • S(c);CHECK,XS(E)
    • Try
      • S(E);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(E);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
        • B(d);::QAR2(A)
        • S(c);N_GUARD::QAB1(A)
      • Refutation
        • B(d);XS(D)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT,XS(E)::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT,XS(E)::QAR2(A)
      • Refutation
        • B(d);XQ(A)
  • Actual
    • R(C);
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(D)::QAB1(A)
      • K(b);P_SPINB(d),S_FLIGHT::QAB1(A)
      • K(b);P_SPINB(d),S_FLIGHT,XS(E)::QAB1(A)
      • B(d);SBLOCK,XS(D)::QAR2(A)
      • S(c);N_GUARD,XS(E)::QAB1(A)
      • S(c);N_GUARD,XP(G)::QAB1(A)
      • B(d);::QAR2(A)
      • S(c);N_GUARD::QAB1(A)
      • S(c);N_GUARD::QAB1(A),XS(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).