MESON Chess Problem Database

Problem Display
PID: 72193 (1Bn2Q2/1Nr5/4p1p1/2P3K1/R1rkP1Rn/6p1/3PP2N/8 w - - 0 1)

Kipping, Cyril Stanley

Chess, 1952

1Bn2Q2/1Nr5/4p1p1/2P3K1/R1rkP1Rn/6p1/3PP2N/8

#2

11 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qg7#
      • 2.Qf6#
      • 2.Qh8#
    • 1...Rxc5+
      • 2.Qxc5#
    • 1...Sg2
      • 2.Sf3#
    • 1...Sf3+
      • 2.Sxf3#
    • 1...Sf5
      • 2.Sf3#
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sa7
      • 2.Qd6#
  • Tries
    • 1.Rxc4+?
      • 1...Ke5
        • 2.Qg7#
        • 2.Qf4#
        • 2.Qf6#
        • 2.Qh8#
        • 2.d4#
      • 1...Kxc4!
    • 1.Qf2+?
      • 1...Ke5
        • 2.Qf6#
      • 1...gxf2!
    • 1.Qd8+?
      • 1...Ke5
        • 2.Qf6#
        • 2.Qh8#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Rd7!
    • 1.e3+?
      • 1...Ke5
        • 2.Qg7#
        • 2.Qf4#
        • 2.Qf6#
        • 2.Qh8#
      • 1...Kd3!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qc3#
      • 1...Rxc5+
        • 2.e5#
      • 1...Sxf3+
        • 2.Sxf3#
      • 1...Ke5
        • 2.Qf6#
      • 1...Rxb7
        • 2.Qe3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • R(g);CHECK,OGATE,XP(G)::QAB1(K),XR(g)
    • S(d);N_GUARD::S(C)
    • S(d);CHECK,N_GUARD::S(C),XS(d)
    • S(h);N_GUARD::QAR2(K),XS(h)
    • S(h);N_GUARD::QAR2(K)
  • Tries
    • Try
      • R(D);CHECK,XR(b)
      • Refutation
        • K(c);P-FLIGHT,XR(D)
    • Try
      • Q(K);CHECK
      • Vars
        • K(c);N_SPINR(b),P_SPINR(g),S_FLIGHT::QAB1(K)
      • Refutation
        • P(a);XQ(K)
    • Try
      • Q(K);CHECK
      • Vars
        • S(h);N_GUARD,P_SPINS(h)::QAR2(K),XS(h)
      • Refutation
        • R(g);
    • Try
      • P(B);CHECK
      • Refutation
        • K(c);N_SPINR(b),P-FLIGHT
  • Actual
    • Q(K);
    • Threat
      • QAB1(K)
    • Vars
      • R(g);CHECK,XP(G)::R(F)+P(E)
      • S(d);CHECK,XQ(K)::S(C),XS(d)
      • K(c);N_SPINR(b),P_SPINR(g),S_FLIGHT::QAB1(K)
      • R(g);XS(I)::QAB1(K)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).