MESON Chess Problem Database

Problem Display
PID: 114823 (2b2nnK/q1p5/1b3Prp/1R6/2p1Nk2/8/1B5N/4Q3 w - - 0 1)

Andrade, Barry Jack da Costa

Toronto Evening Telegram, 1958

2b2nnK/q1p5/1b3Prp/1R6/2p1Nk2/8/1B5N/4Q3

#2

7 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bf5
      • 2.Be5#
  • Tries
    • 1.Qd2+?
      • 1...Kxe4
        • 2.Re5#
      • 1...Be3!
    • 1.Qf2+?
      • 1...Kxe4
        • 2.Qf3#
      • 1...Bxf2!
    • 1.Qg3+?
      • 1...Kxe4
        • 2.Re5#
        • 2.Qf3#
      • 1...Rxg3!
    • 1.Qf1+?
      • 1...Ke3
        • 2.Qf3#
      • 1...Kxe4
        • 2.Re5#
        • 2.Qf3#
      • 1...Bf2!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qe5#
      • 1...Kf5
        • 2.Qe5#
      • 1...Kg5
        • 2.Se6#
      • 1...Rg5
        • 2.Qf2#
      • 1...Bf5
        • 2.Bc1#
      • 1...Sd7
        • 2.Se6#
      • 1...c3
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • B(h);SBLOCK::B(B)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(D)::R1(E)
      • Refutation
        • B(c);P_SPINB(c)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT,XS(D)::QAB1(A)
      • Refutation
        • B(c);XQ(A)
    • Try
      • Q(A);CHECK
      • Refutation
        • R(d);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(A)
      • Refutation
        • B(c);P_SPINB(c)
  • Actual
    • S(D);
    • Threat
      • QAB1(A)
    • Vars
      • K(b);P-FLIGHT::QAR1(A)
      • K(b);S_FLIGHT::R(E)+S(D),DCHECK
      • R(d);SBLOCK::QAR2(A)
      • B(h);SBLOCK::B(B)
      • S(i);N_GUARD,S_CUTB(h)::S(D)
      • P(a);N_GUARD::S(D)
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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).