MESON Chess Problem Database

Problem Display
PID: 54256 (b6B/2b1p1n1/Rr2N3/1N1nk3/1p6/2p1p2B/6QP/7K w - - 0 1)

Maybee, Edward E

Chess Life, 1956

b6B/2b1p1n1/Rr2N3/1N1nk3/1p6/2p1p2B/6QP/7K

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Qxg7#
    • 1...Sf4
      • 2.Bxg7#
  • Tries
    • 1.Qf3?
      • threat
        • 2.Qf5#
      • 1...Sf4
        • 2.Bxg7#
      • 1...Sf6!
    • 1.Qe4+?
      • 1...Kf6
        • 2.Qf5#
      • 1...Kxe4!
    • 1.Qg3+?
      • 1...Ke4
        • 2.Sc5#
      • 1...Kf6
        • 2.Qxg7#
      • 1...Sf4+!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qg5#
      • 1...Kf4
        • 2.Sd3#
        • 2.Qg3#
      • 1...Kf6
        • 2.Qxg7#
      • 1...Rxb5
        • 2.Qe4#
      • 1...Rf6
        • 2.Sd3#
        • 2.Qe4#
      • 1...Rg6
        • 2.Sd3#
        • 2.Qe4#
      • 1...Sf4
        • 2.Sd7#
      • 1...Sf6
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(e);S_FLIGHT::QAB1(B),XS(i)
    • S(d);N_GUARD,P_PINQ(B)::B(H),XS(i)
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • S(d);N_GUARD,P_PINQ(B)::B(H),XS(i)
      • Refutation
        • S(d);N_SPINS(i),P_PINQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(e);S_FLIGHT::QAR1(B)
      • Refutation
        • K(e);N_SPINS(i),P-FLIGHT,XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(e);N_SPINS(i),P-FLIGHT::S(G)
        • K(e);S_FLIGHT::QAB1(B),XS(i)
      • Refutation
        • S(d);CHECK,N_SPINS(i),P_SPINS(d)
  • Actual
    • S(G);
    • Threat
      • QAR2(B)
    • Vars
      • K(e);P_SPINR(f),S_FLIGHT::QAB1(B),XS(i)
      • R(f);XS(E)::QAR1(B)
      • S(d);P_PINQ(B),SBLOCK::S(G)
      • S(d);N_SPINS(i),P_PINQ(B),SBLOCK::S(G)
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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).