MESON Chess Problem Database

Problem Display
PID: 81216 (QR2qr2/1bbpr2p/6pK/1BN3p1/p7/2B1P3/k4P1R/1N6 w - - 0 1)

Andrade, Barry Jack da Costa

The Field, 1951

(First published on Sat Feb 10 1951)

QR2qr2/1bbpr2p/6pK/1BN3p1/p7/2B1P3/k4P1R/1N6

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Bh1
      • 2.Bc4#
    • 1...Bg2
      • 2.Bc4#
    • 1...Bf3
      • 2.Bc4#
    • 1...Be4
      • 2.Bc4#
    • 1...Bc6
      • 2.Bc4#
    • 1...Bxa8
      • 2.Bc4#
    • 1...Bc8
      • 2.Bc4#
  • Tries
    • 1.f4+?
      • 1...Bg2
        • 2.Bc4#
      • 1...Kxb1!
  • Keys
    • 1.Bd3!
      • threat
        • 2.Qxa4#
      • 1...Bxa8
        • 2.Bc4#
      • 1...Re4
        • 2.f4#
      • 1...Rf4
        • 2.f3#
      • 1...Ba6
        • 2.f4#
      • 1...Bc6
        • 2.Bc4#
      • 1...Ba5
        • 2.f3#
      • 1...a3
        • 2.Qxa3#
      • 1...d5
        • 2.f4#
      • 1...d6
        • 2.f3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 5
  • Sets
    • B(e);::B(F)
    • B(e);N_SPINP(b),XQ(I)::B(F)
  • Tries
    • Try
      • P(B);CHECK
      • Vars
        • B(e);P_SPINB(e)::B(F)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT,XS(A)
  • Actual
    • B(F);
    • Threat
      • QAR2(I),XP(b)
    • Vars
      • B(e);N_SPINP(b),XQ(I)::B(F)
      • R(h);S_CUTB(e)::R(C)+P(B)
      • R(k);S_CUTB(f)::R(C)+P(B)
      • B(e);N_GUARD,N_SPINP(b)::R(C)+P(B)
      • B(e);::B(F)
      • B(f);N_GUARD,N_SPINP(b)::R(C)+P(B)
      • P(b);OGATE::QAR1(I),XP(b)
      • P(g);S_CUTB(e)::R(C)+P(B)
      • P(g);S_CUTB(f)::R(C)+P(B)
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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).