MESON Chess Problem Database

Problem Display
PID: 141418 (3B4/7p/4N2Q/2P1pkp1/R2nRp2/5nP1/5K2/5N1B w - - 0 1)

Markwick, Frederick W

Brighton Guardian, 1882

3B4/7p/4N2Q/2P1pkp1/R2nRp2/5nP1/5K2/5N1B

#2

10 + 7

14867 BCPS Library 2011
15351 SCPF/BCPS Black Books 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Kg4
      • 2.Se3#
    • 1...fxg3+
      • 2.Sxg3#
  • Tries
    • 1.Se3+?
      • 1...Kxe4
        • 2.Qxh7#
      • 1...fxe3+!
    • 1.Sg7+?
      • 1...Kg4
        • 2.Se3#
        • 2.Qh5#
      • 1...Kxe4!
    • 1.Sf8?
      • 1...fxg3+
        • 2.Sxg3#
      • 1...Kg4
        • 2.Se3#
      • 1...Se1
        • 2.Qxg5#
      • 1...Sg1
        • 2.Qxg5#
      • 1...Sd2
        • 2.Qxg5#
      • 1...Sh2
        • 2.Qxg5#
      • 1...Sh4
        • 2.Qxg5#
      • 1...Sc2
        • 2.Qe6#
      • 1...Se2
        • 2.Qe6#
      • 1...Sb3
        • 2.Qe6#
      • 1...Sb5
        • 2.Qe6#
      • 1...Sc6
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...g4
        • 2.Qxh7#
      • 1...Kxe4!
    • 1.Bxf3?
      • threat
        • 2.Sg7#
        • 2.Qf6#
        • 2.g4#
      • 1...fxg3+
        • 2.Sxg3#
      • 1...Sxe6
        • 2.Qf6#
        • 2.Qxh7#
        • 2.g4#
      • 1...g4
        • 2.Sg7#
        • 2.Qf6#
      • 1...Sxf3!
    • 1.Qxh7+?
      • 1...Kg4
        • 2.Se3#
      • 1...Kxe6!
    • 1.g4+?
      • 1...Kxg4
        • 2.Se3#
      • 1...Kxe4!
  • Keys
    • 1.Sc7!
      • 1...fxg3+
        • 2.Sxg3#
      • 1...Kxe4
        • 2.Qxh7#
      • 1...Kg4
        • 2.Se3#
      • 1...Se1
        • 2.Qxg5#
      • 1...Sg1
        • 2.Qxg5#
      • 1...Sd2
        • 2.Qxg5#
      • 1...Sh2
        • 2.Qxg5#
      • 1...Sh4
        • 2.Qxg5#
      • 1...Sc2
        • 2.Qe6#
      • 1...Se2
        • 2.Qe6#
      • 1...Sb3
        • 2.Qe6#
      • 1...Sb5
        • 2.Qe6#
      • 1...Sc6
        • 2.Qe6#
      • 1...Se6
        • 2.Qxe6#
      • 1...g4
        • 2.Qxh7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
    • K(e);P_SPINP(c),S_FLIGHT::S(A)
    • P(c);CHECK,XP(D)::S(A),XP(c)
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • K(e);P_SPINS(a),S_FLIGHT,XR(F)::QAB(I),XP(g)
      • Refutation
        • P(c);CHECK,XS(A)
    • Try
      • S(H);CHECK
      • Refutation
        • K(e);P_SPINS(a),S_FLIGHT,XR(F)
    • Try
      • S(H);
      • Vars
        • P(c);CHECK,XP(D)::S(A),XP(c)
        • K(e);P_SPINP(c),S_FLIGHT::S(A)
        • S(a);N_GUARD::QAR1(I),XP(f)
        • S(b);N_GUARD::QAB1(I)
        • S(b);N_GUARD::QAB1(I),XS(b)
        • P(f);SBLOCK::QAB(I),XP(g)
      • Refutation
        • K(e);P_SPINS(a),S_FLIGHT,XR(F)
    • Try
      • B(B);XS(a)
      • Threat
        • DUALS(3)
      • Vars
        • P(c);CHECK,XP(D)::S(A),XP(c)
      • Refutation
        • S(b);XB(B)
    • Try
      • Q(I);CHECK,XP(g)
      • Vars
        • K(e);P_SPINP(c),S_FLIGHT::S(A)
      • Refutation
        • K(e);P_SPINP(d),S_FLIGHT,XS(H)
    • Try
      • P(D);CHECK
      • Vars
        • K(e);P_SPINP(c),S_FLIGHT,XP(D)::S(A)
      • Refutation
        • K(e);P_SPINS(a),S_FLIGHT,XR(F)
  • Actual
    • S(H);
    • Vars
      • P(c);CHECK,XP(D)::S(A),XP(c)
      • K(e);P_SPINS(a),S_FLIGHT,XR(F)::QAB(I),XP(g)
      • K(e);P_SPINP(c),S_FLIGHT::S(A)
      • S(a);N_GUARD::QAR1(I),XP(f)
      • S(b);N_GUARD::QAB1(I)
      • S(b);N_GUARD::QAB1(I),XS(b)
      • P(f);SBLOCK::QAB(I),XP(g)
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).