MESON Chess Problem Database

Problem Display
PID: 66859 (8/2p2N2/2B4b/1p2Np1n/1Rp1pk1n/K7/7P/6Q1 w - - 0 1)

Peake, JL

Chess, 1947

8/2p2N2/2B4b/1p2Np1n/1Rp1pk1n/K7/7P/6Q1

#2

7 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bg5
      • 2.Qxg5#
    • 1...Bg7
      • 2.Qg5#
    • 1...Bf8
      • 2.Qg5#
    • 1...Sg2
      • 2.Qf2#
    • 1...Sf3
      • 2.Sg6#
    • 1...Sg6
      • 2.Qf2#
    • 1...Sg3
      • 2.Qxg3#
      • 2.hxg3#
    • 1...Sf6
      • 2.Qg3#
    • 1...Sg7
      • 2.Qg3#
    • 1...c3
      • 2.Qc1#
    • 1...e3
      • 2.Sd3#
  • Tries
    • 1.Kb2?
      • 1...Bg5
        • 2.Qxg5#
      • 1...Bg7
        • 2.Qg5#
      • 1...Bf8
        • 2.Qg5#
      • 1...Sg2
        • 2.Qf2#
      • 1...Sf3
        • 2.Sg6#
      • 1...Sg6
        • 2.Qf2#
      • 1...Sg3
        • 2.Qxg3#
        • 2.hxg3#
      • 1...Sf6
        • 2.Qg3#
      • 1...Sg7
        • 2.Qg3#
      • 1...e3
        • 2.Sd3#
      • 1...c3+!
  • Keys
    • 1.Ka2!
      • 1...Bg5
        • 2.Qxg5#
      • 1...Bg7
        • 2.Qg5#
      • 1...Bf8
        • 2.Qg5#
      • 1...Sg2
        • 2.Qf2#
      • 1...Sf3
        • 2.Sg6#
      • 1...Sg6
        • 2.Qf2#
      • 1...Sg3
        • 2.Qxg3#
        • 2.hxg3#
      • 1...Sf6
        • 2.Qg3#
      • 1...Sg7
        • 2.Qg3#
      • 1...c3
        • 2.Qc1#
      • 1...e3
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • B(h);N_GUARD::QAB1(A),XB(h)
    • B(h);N_GUARD::QAB1(A)
    • B(h);N_GUARD,P_PINR(D)::QAB1(A)
    • S(d);N_GUARD::QAR2(A)
    • S(d);N_GUARD,SBLOCK::S(E)
    • S(g);N_GUARD::QAB1(A)
    • P(a);P_SPINP(b)::QAB(A)
    • P(b);N_GUARD,P_SPINP(a)::S(E)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • B(h);N_GUARD::QAB1(A),XB(h)
        • B(h);N_GUARD,P_PINS(E)::QAB1(A)
        • B(h);N_GUARD::QAB1(A)
        • S(d);N_GUARD::QAR2(A)
        • S(d);N_GUARD,SBLOCK::S(E)
        • S(g);N_GUARD::QAB1(A)
        • P(b);N_GUARD,P_SPINP(a)::S(E)
      • Refutation
        • P(a);CHECK,P_SPINP(b)
  • Actual
    • K(C);P-FLIGHT
    • Vars
      • B(h);N_GUARD::QAB1(A),XB(h)
      • B(h);N_GUARD::QAB1(A)
      • S(d);N_GUARD::QAR2(A)
      • S(d);N_GUARD,SBLOCK::S(E)
      • S(g);N_GUARD::QAB1(A)
      • P(a);P_SPINP(b)::QAB(A)
      • P(b);N_GUARD,P_SPINP(a)::S(E)
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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).