MESON Chess Problem Database

Problem Display
PID: 183148 (q2b1NN1/prR3Q1/n2k2p1/6p1/1pP5/8/4KB2/7n w - - 0 1)

Slater, George James

2nd Prize, Liverpool Courier, 1907

q2b1NN1/prR3Q1/n2k2p1/6p1/1pP5/8/4KB2/7n

#2

7 + 10

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc7
      • 2.Qf6#
    • 1...Be7
      • 2.Qxe7#
    • 1...Sg3+
      • 2.Bxg3#
    • 1...Sc5
      • 2.Bxc5#
    • 1...Sb8
      • 2.Bc5#
  • Tries
    • 1.c5+?
      • 1...Kd5
        • 2.Qd4#
      • 1...Sxc5!
  • Keys
    • 1.Se7!
      • threat
        • 2.Rc6#
      • 1...Sg3+
        • 2.Bxg3#
      • 1...Kxc7
        • 2.Qe5#
      • 1...Rxc7
        • 2.Qf6#
      • 1...Bxc7
        • 2.Qf6#
      • 1...Bxe7
        • 2.Qxe7#
      • 1...Sxc7
        • 2.c5#
      • 1...Qc8
        • 2.Sxc8#
      • 1...Rb5
        • 2.Rd7#
      • 1...Rb6
        • 2.Rd7#
      • 1...Rb8
        • 2.Rd7#
      • 1...Sb8
        • 2.Sc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • B(j);N_GUARD,SBLOCK,XR(D)::QAR2(E)
    • B(j);N_GUARD::QAB1(E),XB(j)
    • S(a);CHECK,N_GUARD::B(B),XS(a)
    • S(d);N_GUARD::B(B),XS(d)
    • S(d);N_GUARD::B(B)
  • Tries
    • Try
      • P(C);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(E)
      • Refutation
        • S(d);XP(C)
  • Actual
    • S(G);
    • Threat
      • R1(D)
    • Vars
      • S(a);CHECK,N_GUARD::B(B),XS(a)
      • K(e);S_FLIGHT,XR(D)::QAB(E)
      • R(h);SBLOCK,XR(D)::QAR2(E)
      • B(j);SBLOCK,XR(D)::QAR2(E)
      • B(j);OGATE,XS(G)::QAB1(E),XB(j)
      • S(d);N_GUARD,SBLOCK,XR(D)::P(C)
      • Q(i);N_GUARD::S(G),XQ(i)
      • R(h);N_GUARD::R1(D)
      • S(d);S_CUTQ(i)::S(G)
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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).