MESON Chess Problem Database

Problem Display
PID: 66852 (K2B4/PR4Qp/k6r/2p4q/6n1/p2N4/r3p3/R6b w - - 0 1)

Page, George

Chess, 1947

K2B4/PR4Qp/k6r/2p4q/6n1/p2N4/r3p3/R6b

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qg6
      • 2.Sxc5#
    • 1...Qf7
      • 2.Sxc5#
    • 1...Qe8
      • 2.Sxc5#
    • 1...Qh2
      • 2.Sxc5#
    • 1...Qh3
      • 2.Sxc5#
    • 1...Qh4
      • 2.Sxc5#
    • 1...Rb2
      • 2.Rxa3#
    • 1...Rc2
      • 2.Rxa3#
    • 1...Rd2
      • 2.Rxa3#
    • 1...Bd5
      • 2.Sxc5#
    • 1...Bxb7+
      • 2.Qxb7#
    • 1...Se5
      • 2.Sxc5#
    • 1...c4
      • 2.Sb4#
  • Keys
    • 1.Qb2!
      • threat
        • 2.Qb5#
      • 1...Bxb7+
        • 2.Qxb7#
      • 1...Rxb2
        • 2.Rxa3#
      • 1...axb2
        • 2.Rxa2#
      • 1...Rb6
        • 2.Qxb6#
      • 1...Qe8
        • 2.Sxc5#
      • 1...Bc6
        • 2.Qb6#
      • 1...c4
        • 2.Sb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • Q(g);N_GUARD::S(B),XP(f)
    • Q(g);N_GUARD,P_PINB(G)::S(B),XP(f)
    • R(b);OGATE,P_SPINP(d)::R(A),XP(d)
    • B(a);S_CUTQ(g)::S(B),XP(f)
    • B(a);CHECK,OGATE,XR(D)::QAB1(E),XB(a)
    • S(e);S_CUTQ(g)::S(B),XP(f)
    • P(f);N_GUARD::S(B)
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • B(a);CHECK,OGATE,XR(D)::QAB1(E),XB(a)
      • R(b);OGATE,P_SPINP(d),XQ(E)::R(A),XP(d)
      • P(d);OGATEB,P_SPINR(b),XQ(E)::R(A),XR(b)
      • R(i);N_GUARD::QAR1(E),XR(i)
      • Q(g);N_GUARD,P_PINB(G)::S(B),XP(f)
      • B(a);S_CUTR(i)::QAR1(E)
      • P(f);N_GUARD::S(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).