MESON Chess Problem Database

Problem Display
PID: 171244 (bq3nN1/4R1p1/8/3pbkpP/Q1R5/1BpNPP2/8/2K5 w - - 0 1)

Archakov, Vladimir Mikhailovich

Problem (Zagreb), 1973

bq3nN1/4R1p1/8/3pbkpP/Q1R5/1BpNPP2/8/2K5

#2

10 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qa7
      • 2.Rxe5#
    • 1...Qxb3
      • 2.Rxe5#
    • 1...Qb4
      • 2.Rxe5#
    • 1...Qb5
      • 2.Rxe5#
    • 1...Qb6
      • 2.Rxe5#
    • 1...Qb7
      • 2.Rxe5#
    • 1...Qc8
      • 2.Rxe5#
    • 1...Qd8
      • 2.Rxe5#
    • 1...Sg6
      • 2.Qd7#
    • 1...Sd7
      • 2.Qxd7#
    • 1...Sh7
      • 2.Qd7#
  • Tries
    • 1.Rc6?
      • threat
        • 2.Qg4#
      • 1...g4
        • 2.Qxg4#
      • 1...Qb4
        • 2.Rxe5#
      • 1...Bf4
        • 2.Rf7#
      • 1...d4
        • 2.e4#
      • 1...Bd4!
    • 1.Qd7+?
      • 1...Se6
        • 2.Qxe6#
      • 1...Sxd7!
  • Keys
    • 1.Rc5!
      • threat
        • 2.Qg4#
      • 1...g4
        • 2.Qxg4#
      • 1...Bd4
        • 2.e4#
      • 1...Qb4
        • 2.Rxe5#
      • 1...Bf4
        • 2.Qe4#
      • 1...d4
        • 2.Rf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 10
  • Sets
    • Q(h);N_GUARD::R1(I),XB(c)
    • Q(h);N_GUARD,XB(B)::R1(I),XB(c)
    • S(i);N_GUARD::QAB(F)
    • S(i);N_GUARD::QAB(F),XS(i)
  • Tries
    • Try
      • R(G);
      • Threat
        • QAB1(F)
      • Vars
        • P(e);::QAB1(F),XP(e)
        • Q(h);N_GUARD::R1(I),XB(c)
        • B(c);N_GUARD,P_PINP(D)::R(I)
        • P(b);N_GUARD::P(D)
      • Refutation
        • B(c);
    • Try
      • Q(F);CHECK
      • Vars
        • S(i);N_GUARD,P_SPINS(i)::QAB1(F),XS(i)
      • Refutation
        • S(i);XQ(F)
  • Actual
    • R(G);
    • Threat
      • QAB1(F)
    • Vars
      • P(e);::QAB1(F),XP(e)
      • B(c);P_SPINP(b)::P(D)
      • Q(h);N_GUARD::R1(I),XB(c)
      • B(c);P_PINP(D),P_SPINP(b)::QAB1(F)
      • P(b);P_SPINB(c)::R(I)
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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).