MESON Chess Problem Database

Problem Display
PID: 196341 (1Q6/n4NbK/3pp3/r4kP1/r1n1R2p/3P1Nq1/8/8 w - - 0 1)

Muha, Boris

Suomen Shakki, 1984

1Q6/n4NbK/3pp3/r4kP1/r1n1R2p/3P1Nq1/8/8

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qe5
      • 2.Sxh4#
    • 1...Qg1
      • 2.Sxh4#
    • 1...Qg2
      • 2.Sxh4#
    • 1...Re5
      • 2.Sd4#
    • 1...Ba1
      • 2.Sh6#
    • 1...Bb2
      • 2.Sh6#
    • 1...Bc3
      • 2.Sh6#
    • 1...Bd4
      • 2.Sxd4#
      • 2.Sh6#
    • 1...Be5
      • 2.Sh6#
    • 1...Bf6
      • 2.Sh6#
    • 1...Bh6
      • 2.Sd4#
      • 2.Sxh6#
    • 1...Bf8
      • 2.Sd4#
    • 1...Bh8
      • 2.Sh6#
    • 1...Se5
      • 2.Sxd6#
  • Tries
    • 1.Qc8?
      • threat
        • 2.Qxe6#
      • 1...Qe5
        • 2.Sxh4#
      • 1...Re5
        • 2.Sd4#
      • 1...Be5
        • 2.Sh6#
      • 1...Se5
        • 2.Sxd6#
      • 1...Sxc8!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Qxe6#
      • 1...Qe5
        • 2.Sxh4#
      • 1...Re5
        • 2.Sd4#
      • 1...Be5
        • 2.Sh6#
      • 1...Se5
        • 2.Sxd6#
      • 1...e5
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 8
  • Sets
    • Q(a);N_GUARD::S(B),XP(d)
    • R(e);S_CUTB(j)::S(B)
    • B(j);N_GUARD::S(E)
    • B(j);N_GUARD::S(B)
    • S(c);N_GUARD,S_CUTQ(a)::S(E),XP(g)
  • Tries
    • Try
      • Q(G);P_PINP(h)
      • Threat
        • QAB1(G),XP(h)
      • Vars
        • Q(a);N_GUARD::S(B),XP(d)
        • R(e);S_CUTB(j)::S(B)
        • B(j);N_GUARD::S(E)
        • S(c);N_GUARD,S_CUTQ(a)::S(E),XP(g)
      • Refutation
        • S(i);N_SPINP(h),XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAB1(G),XP(h)
    • Vars
      • Q(a);N_GUARD::S(B),XP(d)
      • R(e);S_CUTB(j)::S(B)
      • B(j);N_GUARD::S(E)
      • S(c);N_GUARD,S_CUTQ(a)::S(E),XP(g)
      • P(h);OGATEB::QAB(G)
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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).