MESON Chess Problem Database

Problem Display
PID: 140695 (4Q3/1n2p1K1/3pB3/2pn2N1/2Pk2P1/7R/5N2/6B1 w - - 0 1)

Maybee, Edward E

Toronto Evening Telegram, 1932

4Q3/1n2p1K1/3pB3/2pn2N1/2Pk2P1/7R/5N2/6B1

#2

9 + 6

56 The Problemist 1943

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc4
      • 2.Qa4#
    • 1...Ke5
      • 2.Sd3#
    • 1...Sc3
      • 2.Sd3#
  • Tries
    • 1.Rd3+?
      • 1...Kxc4
        • 2.Qa4#
      • 1...Ke5!
  • Keys
    • 1.Qa8!
      • 1...Kxc4
        • 2.Qa4#
      • 1...Ke5
        • 2.Sd3#
      • 1...Sf6
        • 2.Qa1#
      • 1...Sc3
        • 2.Sd3#
      • 1...Se3
        • 2.Qa1#
      • 1...Sb4
        • 2.Qa1#
      • 1...Sf4
        • 2.Qa1#
      • 1...Sb6
        • 2.Qa1#
      • 1...Sc7
        • 2.Qa1#
      • 1...Sa5
        • 2.Qxd5#
      • 1...Sd8
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,P-FLIGHT,P_SPINS(c),XP(D)::QAR2(I)
    • K(a);S_FLIGHT::S(B)
    • S(c);N_GUARD,SBLOCK::B(A)+S(B)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINS(c),XP(D)::QAR2(I)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(I);
    • Vars
      • K(a);OGATEB,P-FLIGHT,P_SPINS(c),XP(D)::QAR2(I)
      • K(a);S_FLIGHT::S(B)
      • S(c);N_GUARD::QAB(I)
      • S(c);N_GUARD,SBLOCK::B(A)+S(B)
      • S(e);OGATE::QAR1(I),XS(c)
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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).