MESON Chess Problem Database

Problem Display
PID: 70866 (1K1Q4/4p2r/1pp1p2n/2k1Nn2/R1BpR1bp/5N1r/7q/6b1 w - - 0 1)

Kipping, Cyril Stanley

The Chess Problem, 1948

1K1Q4/4p2r/1pp1p2n/2k1Nn2/R1BpR1bp/5N1r/7q/6b1

#2

7 + 14

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe5+
      • 2.Rxe5#
    • 1...Qh1
      • 2.Sd3#
    • 1...Qa2
      • 2.Sd3#
    • 1...Qb2
      • 2.Sd3#
    • 1...Qf2
      • 2.Sd3#
    • 1...Qg2
      • 2.Sd3#
    • 1...Rg3
      • 2.Sd3#
    • 1...Se3
      • 2.Qxd4#
    • 1...Sg3
      • 2.Sd3#
    • 1...Sd6
      • 2.Sd3#
      • 2.Sd7#
    • 1...Sg7
      • 2.Qxe7#
  • Tries
    • 1.Qxb6+?
      • 1...Kd6
        • 2.Qxc6#
      • 1...Kxb6!
    • 1.Qc7?
      • threat
        • 2.Sd3#
        • 2.Sd7#
        • 2.Qxc6#
      • 1...Qxe5
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Rxf3
        • 2.Sd7#
        • 2.Qxc6#
      • 1...Qc2
        • 2.Sd7#
        • 2.Qxc6#
      • 1...Qd2
        • 2.Sd7#
        • 2.Qxc6#
      • 1...Qe2
        • 2.Sd7#
        • 2.Qxc6#
      • 1...d3
        • 2.Sxd3#
        • 2.Sd7#
        • 2.Qxc6#
      • 1...Rh8+!
    • 1.Qd6+?
      • 1...Sxd6
        • 2.Sd3#
        • 2.Sd7#
      • 1...exd6
        • 2.Sd3#
      • 1...Kxd6!
    • 1.Qd7?
      • threat
        • 2.Qxc6#
      • 1...Qxe5+
        • 2.Rxe5#
      • 1...Rh8+!
  • Keys
    • 1.Sg5!
      • threat
        • 2.Sxe6#
      • 1...Qxe5+
        • 2.Rxe5#
      • 1...Se3
        • 2.Qxd4#
      • 1...Sg3
        • 2.Sd3#
      • 1...Sd6
        • 2.Sd7#
      • 1...Sg7
        • 2.Qxe7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • Q(b);CHECK,OGATE,XS(E)::R(D),XQ(b)
    • Q(b);N_PINS(E)::S(E)
    • R(c);N_PINS(E)::S(E)
    • S(h);N_GUARD,S_CUTB(a)::QAB1(G),XP(d)
    • S(h);N_PINS(E)::S(E)
    • S(h);N_GUARD,S_CUTR(n)::QAB(G),XP(m)
  • Tries
    • Try
      • Q(G);CHECK,XP(i)
      • Vars
        • K(g);N_PINS(E),P_SPINP(j),S_FLIGHT::QAR1(G),XP(j)
      • Refutation
        • K(g);S_FLIGHT,XQ(G)
    • Try
      • Q(G);N_SPINS(E),P_PINP(j)
      • Threat
        • DUALS(3)
      • Refutation
        • R(n);CHECK
    • Try
      • Q(G);CHECK,N_SPINS(E)
      • Vars
        • P(m);SBLOCK,XQ(G)::S(E)
      • Refutation
        • K(g);S_FLIGHT,XQ(G)
    • Try
      • Q(G);
      • Threat
        • QAR1(G),XP(j)
      • Vars
        • Q(b);CHECK,OGATE,XS(E)::R(D),XQ(b)
      • Refutation
        • R(n);CHECK
  • Actual
    • S(A);
    • Threat
      • S(A),XP(k)
    • Vars
      • Q(b);CHECK,OGATE,XS(E)::R(D),XQ(b)
      • S(h);N_GUARD,S_CUTB(a)::QAB1(G),XP(d)
      • S(h);N_PINS(E)::S(E)
      • S(h);N_PINS(E),SBLOCK::S(E)
      • S(h);N_GUARD,S_CUTR(n)::QAB(G),XP(m)
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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).