MESON Chess Problem Database

Problem Display
PID: 171257 (2K5/4NQ2/1BppppP1/6pN/3PkP2/1q2p3/b3B1P1/3R1r2 w - - 0 1)

Archakov, Vladimir Mikhailovich

1st Prize, 64 Shakhmatnoe obozrenie, 1989

2K5/4NQ2/1BppppP1/6pN/3PkP2/1q2p3/b3B1P1/3R1r2

#2

11 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qa4
      • 2.Bd3#
    • 1...Qd5
      • 2.Bd3#
    • 1...Qb2
      • 2.Bd3#
    • 1...Qd3
      • 2.Bxd3#
    • 1...Qb4
      • 2.Bd3#
    • 1...Re1
      • 2.Bf3#
    • 1...Rg1
      • 2.Bf3#
    • 1...Rh1
      • 2.Bf3#
    • 1...Rf3
      • 2.Bxf3#
      • 2.gxf3#
    • 1...Rxf4
      • 2.Sg3#
    • 1...gxf4
      • 2.Sxf6#
    • 1...d5
      • 2.Qxe6#
  • Tries
    • 1.Qxf6?
      • threat
        • 2.Sg3#
      • 1...Rf3
        • 2.Bxf3#
        • 2.gxf3#
      • 1...gxf4!
    • 1.g3?
      • threat
        • 2.Sxf6#
      • 1...f5
        • 2.Sf6#
      • 1...Rxf4!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qxe6#
      • 1...Kxd5
        • 2.Sxf6#
      • 1...Kf5
        • 2.Sg3#
      • 1...Qxd5
        • 2.Bd3#
      • 1...exd5
        • 2.Qe6#
      • 1...e5
        • 2.Sg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 10
  • Sets
    • Q(c);N_GUARD::B(B)
    • Q(c);N_GUARD::B(B),XQ(c)
    • R(a);N_GUARD::B(B)
    • R(a);SBLOCK,XP(E)::S(F)
    • P(f);SBLOCK,XP(E)::S(F),XP(j)
    • P(h);S_CUTQ(c)::QAR2(J),XP(i)
  • Tries
    • Try
      • Q(J);XP(j)
      • Threat
        • S(F)
      • Refutation
        • P(f);XP(E)
    • Try
      • P(C);
      • Threat
        • S(F),XP(j)
      • Vars
        • P(j);::S(F)
      • Refutation
        • R(a);XP(E)
  • Actual
    • S(I);
    • Threat
      • QAR2(J),XP(i)
    • Vars
      • K(e);P_SPINP(i),S_FLIGHT,XS(I)::S(F),XP(j)
      • K(e);P_SPINP(j),S_FLIGHT::S(F)
      • Q(c);N_GUARD,SBLOCK,XS(I)::B(B)
      • P(i);XS(I)::QAR2(J)
      • P(i);::S(F)
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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).