MESON Chess Problem Database

Problem Display
PID: 134951 (6N1/1K6/2pk2n1/3pnB2/1P6/5PQ1/8/4R3 w - - 0 1)

Beetz, Sebastian

Troll, 2008

6N1/1K6/2pk2n1/3pnB2/1P6/5PQ1/8/4R3

#2

7 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Sh4
      • 2.Qxe5#
    • 1...Se7
      • 2.Qxe5#
    • 1...Sf8
      • 2.Qxe5#
    • 1...Sh8
      • 2.Qxe5#
  • Tries
    • 1.Qf2?
      • threat
        • 2.Qc5#
      • 1...d4
        • 2.Qxd4#
      • 1...Sd7
        • 2.Re6#
      • 1...c5
        • 2.Qxc5#
        • 2.bxc5#
      • 1...Sd3!
    • 1.Qh4?
      • threat
        • 2.Qf6#
      • 1...d4
        • 2.Qxd4#
      • 1...Sf4
        • 2.Qe7#
      • 1...Sg4
        • 2.Qd8#
      • 1...Sd7
        • 2.Re6#
      • 1...Sf8
        • 2.Qe7#
      • 1...Sxh4!
    • 1.Qg5?
      • threat
        • 2.Qf6#
      • 1...Sf4
        • 2.Qe7#
      • 1...Sg4
        • 2.Qd8#
      • 1...Sd7
        • 2.Re6#
      • 1...Sf8
        • 2.Qe7#
      • 1...d4!
  • Keys
    • 1.Qg1!
      • threat
        • 2.Qc5#
      • 1...d4
        • 2.Qxd4#
      • 1...Sd3
        • 2.Qxg6#
      • 1...Sd7
        • 2.Re6#
      • 1...c5
        • 2.Qxc5#
        • 2.bxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • S(e);N_GUARD::QAB1(C),XS(b)
  • Tries
    • Try
      • Q(C);N_PINS(b)
      • Threat
        • QAB1(C)
      • Vars
        • P(a);OGATEB::QAR2(C),XP(a)
        • S(b);OGATE,SBLOCK::R1(A)
      • Refutation
        • S(b);
    • Try
      • Q(C);N_PINS(b)
      • Threat
        • QAR2(C)
      • Vars
        • P(a);OGATEB::QAR2(C),XP(a)
        • S(e);N_GUARD::QAB1(C)
        • S(b);N_GUARD::QAR2(C)
        • S(b);OGATE,SBLOCK::R1(A)
      • Refutation
        • S(e);XQ(C)
    • Try
      • Q(C);N_PINS(b)
      • Threat
        • QAR2(C)
      • Vars
        • S(e);N_GUARD::QAB1(C)
        • S(b);N_GUARD::QAR2(C)
        • S(b);OGATE,SBLOCK::R1(A)
      • Refutation
        • P(a);
  • Actual
    • Q(C);N_PINS(b)
    • Threat
      • QAB1(C)
    • Vars
      • P(a);OGATEB::QAR2(C),XP(a)
      • S(b);N_GUARD::QAR(C),XS(e)
      • S(b);OGATE,SBLOCK::R1(A)
HTML5 logo

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).