MESON Chess Problem Database

Problem Display
PID: 101966 (2qB2nb/p3pp2/1PPPp3/R1K1k3/1PR1N2p/4Q3/4b1B1/8 w - - 0 1)

Barclay, William A

Montreal Gazette, 1964

2qB2nb/p3pp2/1PPPp3/R1K1k3/1PR1N2p/4Q3/4b1B1/8

#2

11 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Qg5#
    • 1...Qxc6+
      • 2.Kxc6#
    • 1...Bxc4
      • 2.Kxc4#
    • 1...Bf6
      • 2.Sg3#
    • 1...Sf6
      • 2.Qg5#
    • 1...axb6+
      • 2.Kxb6#
    • 1...exd6+
      • 2.Sxd6#
    • 1...f6
      • 2.Sg3#
  • Tries
    • 1.Qg3+?
      • 1...Kf5
        • 2.Qg5#
      • 1...hxg3!
  • Keys
    • 1.Kb5!
      • threat
        • 2.Ka4#
      • 1...Qa6+
        • 2.Kxa6#
      • 1...Qxc6+
        • 2.Kxc6#
      • 1...Bxc4+
        • 2.Kxc4#
      • 1...Kd5
        • 2.Qc5#
      • 1...Kf5
        • 2.Qg5#
      • 1...axb6
        • 2.Kxb6#
      • 1...exd6
        • 2.Sg3#
      • 1...Bd1
        • 2.Rc5#
      • 1...Sf6
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • K(c);P-FLIGHT::QAR1(B)
    • Q(h);CHECK,XP(I)::R(F)+K(G),XQ(h)
    • B(a);XR(D)::R(F)+K(G),XB(a)
    • B(j);SBLOCK::QAR(B)+S(E)
    • S(i);S_CUTP(g)::QAR2(B)
    • P(e);CHECK,XP(H)::R(F)+K(G),XP(e)
    • P(f);CHECK,XP(J)::QAR(B)+S(E),XP(f)
    • P(g);SBLOCK::QAR(B)+S(E)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
      • Refutation
        • P(b);XQ(B)
  • Actual
    • K(G);N_SPINP(I),P-FLIGHT,P_SPINR(D)
    • Threat
      • R(F)+K(G)
    • Vars
      • Q(h);CHECK::R(F)+K(G),XQ(h)
      • Q(h);CHECK,XP(I)::R(F)+K(G),XQ(h)
      • B(a);CHECK,XR(D)::R(F)+K(G),XB(a)
      • K(c);P-FLIGHT::QAR1(B)
      • P(e);XP(H)::R(F)+K(G),XP(e)
      • P(f);SBLOCK,XP(J)::QAR(B)+S(E)
      • B(a);N_PINR(D)::R(D)
      • S(i);S_CUTP(g)::QAR2(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).