MESON Chess Problem Database

Problem Display
PID: 69711 (Q5b1/2Pppp2/6p1/3Pk3/2K1P1P1/7N/8/2B1R1n1 w - - 0 1)

Amirov, Talip Khasanovich

1st Prize, Krasnoe Znamya, 1970

Q5b1/2Pppp2/6p1/3Pk3/2K1P1P1/7N/8/2B1R1n1

#2

9 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...d6
      • 2.Bb2#
      • 2.Qa1#
    • 1...f6
      • 2.Bf4#
  • Tries
    • 1.Qa3?
      • threat
        • 2.Bb2#
        • 2.Qxe7#
      • 1...Sxh3
        • 2.Qxe7#
      • 1...Se2
        • 2.Qxe7#
      • 1...Sf3
        • 2.Qxe7#
      • 1...d6
        • 2.Bb2#
        • 2.Qb2#
        • 2.Qa1#
        • 2.Qc3#
      • 1...e6
        • 2.Bb2#
      • 1...f5
        • 2.Bb2#
      • 1...f6
        • 2.Bb2#
        • 2.Bf4#
        • 2.Qg3#
      • 1...Kf6!
    • 1.Qd8?
      • threat
        • 2.Qxe7#
      • 1...Kd6
        • 2.e5#
      • 1...Kf6
        • 2.Bb2#
      • 1...e6
        • 2.Bf4#
      • 1...f6
        • 2.Bf4#
      • 1...f5!
  • Keys
    • 1.Qf8!
      • threat
        • 2.Qxe7#
      • 1...Kd6
        • 2.Bf4#
      • 1...Kf6
        • 2.e5#
      • 1...e6
        • 2.Bb2#
      • 1...f5
        • 2.Bf4#
      • 1...f6
        • 2.Bf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(f);P_PINP(G),SBLOCK::B(A)
  • Tries
    • Try
      • Q(I);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);XS(C)::QAR2(I),XP(e)
        • S(a);::QAR2(I),XP(e)
        • P(e);::B(A)
        • P(f);P_PINP(G)::B(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(I);
      • Threat
        • QAR2(I),XP(e)
      • Vars
        • K(b);OGATE,P_SPINP(d),S_FLIGHT::P(E)
        • K(b);P_SPINP(e),S_FLIGHT::B(A)
        • P(e);::B(A)
        • P(f);P_PINP(G),SBLOCK::B(A)
      • Refutation
        • P(f);P_PINP(G)
  • Actual
    • Q(I);
    • Threat
      • QAR2(I),XP(e)
    • Vars
      • K(b);P_SPINP(e),S_FLIGHT::B(A)
      • K(b);OGATE,P_SPINP(f),S_FLIGHT::P(E)
      • P(e);::B(A)
      • P(f);P_PINP(G)::B(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).