MESON Chess Problem Database

Problem Display
PID: 226937 (8/1N3p2/r4k1P/b1p2P2/2N2PK1/2n5/3Q4/8 w - - 0 1)

Tompuri, Ismo

Tehtavaniekka, 2020

8/1N3p2/r4k1P/b1p2P2/2N2PK1/2n5/3Q4/8

#2

7 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rb6
      • 2.Qd8#
    • 1...Rd6
      • 2.Qxd6#
    • 1...Ra7
      • 2.Qd6#
    • 1...Ra8
      • 2.Qd6#
    • 1...Bb4
      • 2.Qd8#
    • 1...Bb6
      • 2.Qd6#
    • 1...Bd8
      • 2.Qxd8#
  • Tries
    • 1.Qe1?
      • threat
        • 2.Qh4#
        • 2.Qe5#
      • 1...Re6
        • 2.Qh4#
      • 1...Se2
        • 2.Qh4#
      • 1...Bc7
        • 2.Qh4#
      • 1...Se4!
  • Keys
    • 1.Sb6!
      • threat
        • 2.Qd6#
        • 2.Qd8#
      • 1...Ke7
        • 2.Qd8#
      • 1...Rxb6
        • 2.Qd8#
      • 1...Bxb6
        • 2.Qd6#
      • 1...Ra8
        • 2.Qd6#
      • 1...Se4
        • 2.Sd5#
        • 2.Qd8#
      • 1...Sb5
        • 2.Sd5#
        • 2.Qd8#
      • 1...Sd5
        • 2.Sxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(d);S_CUTB(b)::QAB(A)
    • R(d);N_GUARD::QAR2(A),XR(d)
    • R(d);N_GUARD::QAR2(A)
    • B(b);N_GUARD::QAB(A)
    • B(b);S_CUTR(d)::QAR2(A)
    • B(b);N_GUARD::QAB(A),XB(b)
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • R(d);::QAB(A)
        • S(a);::QAB(A)
        • B(b);::QAB(A)
      • Refutation
        • S(a);
  • Actual
    • S(B);
    • Threat
      • DUALS(2)
    • Vars
      • K(e);S_FLIGHT::QAB1(A)
      • R(d);XS(B)::QAB(A)
      • B(b);XS(B)::QAR2(A)
      • R(d);::QAR2(A)
      • S(a);N_GUARD::S(B),XS(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).