MESON Chess Problem Database

Problem Display
PID: 119892 (8/8/N2b4/k2K4/rN6/rp6/8/6Q1 w - - 0 1)

Stockman, O

Aftonbladet, 1917

8/8/N2b4/k2K4/rN6/rp6/8/6Q1

#2

4 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Qc5#
    • 1...Bg3
      • 2.Qc5#
    • 1...Bf4
      • 2.Qc5#
    • 1...Bc5
      • 2.Qxc5#
    • 1...Be5
      • 2.Qc5#
    • 1...Bc7
      • 2.Qc5#
    • 1...Bb8
      • 2.Qc5#
  • Tries
    • 1.Kc6?
      • threat
        • 2.Qb6#
      • 1...Bc5
        • 2.Qxc5#
      • 1...Bc7
        • 2.Qc5#
      • 1...Rxb4!
    • 1.Kxd6?
      • threat
        • 2.Qc5#
      • 1...Kb5
        • 2.Qc5#
      • 1...Rxb4!
  • Keys
    • 1.Sc7!
      • threat
        • 2.Sc6#
      • 1...Kxb4
        • 2.Qe1#
      • 1...Rxb4
        • 2.Qa7#
      • 1...Bxb4
        • 2.Qa7#
      • 1...Bxc7
        • 2.Qc5#
      • 1...Bc5
        • 2.Qxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • B(e);N_GUARD::QAR2(A)
    • B(e);N_GUARD::QAR2(A),XB(e)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • QAB1(A)
      • Vars
        • B(e);N_GUARD::QAR2(A),XB(e)
        • B(e);N_GUARD::QAR2(A)
      • Refutation
        • R(c);XS(B)
    • Try
      • K(C);P-FLIGHT,XB(e)
      • Threat
        • QAR2(A)
      • Vars
        • K(d);P-FLIGHT::QAR1(A)
      • Refutation
        • R(c);XS(B)
  • Actual
    • S(D);
    • Threat
      • S(B)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XS(B)::QAB(A)
      • R(c);SBLOCK,XS(B)::QAR2(A)
      • B(e);SBLOCK,XS(B)::QAR2(A)
      • B(e);N_GUARD,XS(D)::QAR2(A)
      • B(e);N_GUARD::QAR2(A),XB(e)
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).