MESON Chess Problem Database

Problem Display
PID: 114933 (1r5Q/5BN1/1Rn3R1/1N2k3/8/4Kn2/6br/8 w - - 0 1)

Bessenyi, D

Klein MT, 1942

1r5Q/5BN1/1Rn3R1/1N2k3/8/4Kn2/6br/8

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Qxh2#
    • 1...Sg1
      • 2.Qxh2#
    • 1...Sd2
      • 2.Qxh2#
    • 1...Sfd4
      • 2.Qxh2#
    • 1...Sg5
      • 2.Qxh2#
    • 1...Sb4
      • 2.Qxb8#
    • 1...Scd4
      • 2.Qxb8#
    • 1...Sa5
      • 2.Qxb8#
    • 1...Sa7
      • 2.Qxb8#
    • 1...Se7
      • 2.Qxb8#
  • Tries
    • 1.Sh5+?
      • 1...Kf5
        • 2.Sd6#
        • 2.Sg3#
        • 2.Qf6#
      • 1...Rxh8!
    • 1.Se8+?
      • 1...Kf5
        • 2.Sbd6#
        • 2.Sed6#
        • 2.Qf6#
      • 1...Rxh8!
    • 1.Qh5+?
      • 1...Sg5
        • 2.Qxh2#
        • 2.Qxg5#
      • 1...Rxh5!
    • 1.Qc8?
      • threat
        • 2.Qf5#
        • 2.Qe6#
        • 2.Qc7#
      • 1...Rh5
        • 2.Qe6#
        • 2.Qc7#
      • 1...Rb7
        • 2.Qf5#
        • 2.Qe6#
      • 1...Bh3
        • 2.Qc7#
      • 1...Sfd4
        • 2.Qc7#
      • 1...Sh4
        • 2.Qe6#
        • 2.Qc7#
      • 1...Sg5
        • 2.Qf5#
        • 2.Qc7#
      • 1...Scd4
        • 2.Qc5#
        • 2.Qc7#
        • 2.Qxb8#
      • 1...Se7
        • 2.Qe6#
        • 2.Qc7#
        • 2.Qxb8#
      • 1...Sd8
        • 2.Qf5#
        • 2.Qc5#
        • 2.Qc7#
        • 2.Qxb8#
      • 1...Rxc8!
    • 1.Qe8+?
      • 1...Se7
        • 2.Qxe7#
        • 2.Qxb8#
      • 1...Rxe8!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Sxc6#
      • 1...Rxb6
        • 2.Sh5#
      • 1...Sfxd4
        • 2.Qxh2#
      • 1...Scxd4
        • 2.Qxb8#
      • 1...Rc8
        • 2.Rb5#
      • 1...Se1
        • 2.Qxh2#
      • 1...Sg1
        • 2.Qxh2#
      • 1...Sd2
        • 2.Qxh2#
      • 1...Sh4
        • 2.Se8#
      • 1...Sg5
        • 2.Qxh2#
      • 1...Sb4
        • 2.Qxb8#
      • 1...Sa5
        • 2.Qxb8#
      • 1...Sa7
        • 2.Qxb8#
      • 1...Se7
        • 2.Qxb8#
      • 1...Sd8
        • 2.Sh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::QAB(G),XR(b)
    • S(e);N_GUARD::QAB(G),XR(f)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • R(f);XQ(G)
    • Try
      • S(F);CHECK
      • Refutation
        • R(b);XQ(G)
    • Try
      • Q(G);CHECK
      • Refutation
        • R(b);XQ(G)
    • Try
      • Q(G);
      • Threat
        • DUALS(3)
      • Vars
        • B(a);::QAB(G)
        • S(c);::QAB(G)
      • Refutation
        • R(f);XQ(G)
    • Try
      • Q(G);CHECK
      • Refutation
        • R(f);XQ(G)
  • Actual
    • S(B);
    • Threat
      • S(B),XS(e)
    • Vars
      • R(f);N_GUARD,XR(C)::QAB(G)+S(F)
      • S(c);N_GUARD,XS(B)::QAB(G),XR(b)
      • S(e);N_GUARD,XS(B)::QAB(G),XR(f)
      • R(f);N_GUARD::R(C)
      • S(c);N_GUARD::QAB(G),XR(b)
      • S(c);S_CUTR(b)::QAB(G)+S(F)
      • S(e);N_GUARD::QAB(G),XR(f)
      • S(e);S_CUTR(f)::QAB(G)+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).