MESON Chess Problem Database

Problem Display
PID: 69840 (Q7/2N5/2N4K/3n2pB/2p1kP1R/4pR2/2b1p3/2B5 w - - 0 1)

Isaryanov, Vladimir Petrovich

2nd Prize=, Banska Bystrica (BABY) TT, 1958

Q7/2N5/2N4K/3n2pB/2p1kP1R/4pR2/2b1p3/2B5

#2

9 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Qd8?
      • threat
        • 2.Qxd5#
      • 1...Kd3
        • 2.Rxe3#
      • 1...Kf5
        • 2.Bg6#
      • 1...Sxf4
        • 2.Qd5#
      • 1...Sxc7
        • 2.fxg5#
      • 1...Sc3
        • 2.fxg5#
      • 1...Sb4
        • 2.fxg5#
      • 1...Sb6
        • 2.fxg5#
      • 1...Se7
        • 2.fxg5#
      • 1...Sf6!
  • Keys
    • 1.Qa5!
      • threat
        • 2.Qxd5#
      • 1...Kd3
        • 2.Bg6#
      • 1...Kf5
        • 2.fxg5#
      • 1...Sxf4
        • 2.Rxe3#
        • 2.Qd5#
      • 1...Sxc7
        • 2.Rxe3#
      • 1...Sc3
        • 2.Rxe3#
      • 1...Sb4
        • 2.Rxe3#
      • 1...Sb6
        • 2.Rxe3#
      • 1...Sf6
        • 2.Rxe3#
      • 1...Se7
        • 2.Rxe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(I);
      • Threat
        • QAB1(I),XS(f)
      • Vars
        • K(e);P_SPINP(c),P_SPINS(f),S_FLIGHT::R1(B),XP(c)
        • K(e);S_FLIGHT::B(E)
        • S(f);P_SPINS(f),XP(C)::QAB1(I)
        • S(f);N_GUARD,XS(H)::R(D)+P(C),XP(g)
        • S(f);N_GUARD::R(D)+P(C),XP(g)
      • Refutation
        • S(f);
  • Actual
    • Q(I);
    • Threat
      • QAB1(I),XS(f)
    • Vars
      • K(e);P_SPINP(c),S_FLIGHT::B(E)
      • K(e);P_SPINS(f),S_FLIGHT::R(B)+P(C),XP(g)
      • S(f);N_GUARD,XS(H)::R1(B),XP(c)
      • S(f);N_GUARD::R1(B),XP(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).