MESON Chess Problem Database

Problem Display
PID: 186078 (2b1Q2B/2r1pp1K/6B1/1p6/1P2P3/4P3/N1k4b/nR1R4 w - - 0 1)

Stanley, Cyril (Kipping, Cyril Stanley)

Chess, 1958

2b1Q2B/2r1pp1K/6B1/1p6/1P2P3/4P3/N1k4b/nR1R4

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Qxc6#
    • 1...Ra7
      • 2.Qc6#
    • 1...Rb7
      • 2.Qc6#
  • Tries
    • 1.Rd2+?
      • 1...Kxb1
        • 2.Rb2#
      • 1...Kxd2!
    • 1.Qxb5?
      • threat
        • 2.Qe2#
        • 2.Qd3#
      • 1...Rc3
        • 2.Qe2#
      • 1...Rc4
        • 2.Qxc4#
      • 1...Rd7
        • 2.Qc4#
        • 2.Qc6#
        • 2.Qc5#
      • 1...Bg4
        • 2.Qd3#
      • 1...Sb3
        • 2.Qd3#
      • 1...Ba6!
  • Keys
    • 1.Qxf7!
      • threat
        • 2.Rbc1#
        • 2.Qf2#
      • 1...Rc3
        • 2.Qf2#
      • 1...Rc4
        • 2.Qf2#
      • 1...Rd7
        • 2.Rbc1#
      • 1...Bg1
        • 2.Rbc1#
      • 1...Bg3
        • 2.Rbc1#
      • 1...Bf4
        • 2.Rbc1#
      • 1...Be5
        • 2.Qf2#
      • 1...Bg4
        • 2.Rbc1#
      • 1...Bf5
        • 2.Rbc1#
      • 1...Be6
        • 2.Qf2#
      • 1...Sb3
        • 2.Qxb3#
      • 1...e5
        • 2.Qxc7#
      • 1...e6
        • 2.e5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 3
  • Sets
    • R(e);N_GUARD::QAR(I),XR(e)
    • R(e);N_GUARD::QAR(I)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XR(A)::R1(B)
      • Refutation
        • K(b);P-FLIGHT,XR(B)
    • Try
      • Q(I);XP(d)
      • Threat
        • DUALS(2)
      • Vars
        • R(e);::QAR2(I)
        • R(e);N_GUARD::QAR2(I),XR(e)
        • B(h);::QAB1(I)
        • S(a);::QAB1(I)
      • Refutation
        • B(h);
  • Actual
    • Q(I);XP(g)
    • Threat
      • DUALS(2)
    • Vars
      • R(e);::QAR(I)
      • R(e);::R1(A)
      • B(c);::R1(A)
      • B(c);::QAR(I)
      • B(h);::R1(A)
      • B(h);P_PINB(G)::R1(A)
      • B(h);::QAR(I)
      • S(a);N_GUARD::QAB1(I),XS(a)
      • P(f);OGATE,P_PINQ(I)::QAR(I),XR(e)
      • P(f);P_PINQ(I),S_CUTB(h)::B(G)+P(F)
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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).