MESON Chess Problem Database

Problem Display
PID: 21871 (8/p3N2Q/B3p3/5rP1/1P1pk1p1/5NB1/2pP1P2/2K5 w - - 0 1)

Warton, Joseph John

Warton, Thomas Joseph

Morning Post, 1921

8/p3N2Q/B3p3/5rP1/1P1pk1p1/5NB1/2pP1P2/2K5

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf3
      • 2.Qh1#
    • 1...d3
      • 2.Bb7#
    • 1...gxf3
      • 2.d3#
    • 1...e5
      • 2.Qxf5#
  • Tries
    • 1.Kxc2?
      • threat
        • 2.Bb7#
      • 1...Kxf3
        • 2.Qh1#
      • 1...d3+!
    • 1.Sxf5?
      • 1...Kxf3
        • 2.Sh4#
        • 2.Qh1#
        • 2.Qb7#
      • 1...Kd5
        • 2.Se7#
        • 2.Qb7#
      • 1...gxf3
        • 2.Se3#
        • 2.Se7#
      • 1...exf5
        • 2.Qb7#
      • 1...d3
        • 2.Bb7#
      • 1...e5!
    • 1.Sc8?
      • 1...Kxf3
        • 2.Qh1#
      • 1...Kd5
        • 2.Qb7#
      • 1...e5
        • 2.Qb7#
      • 1...d3
        • 2.Bb7#
      • 1...gxf3!
    • 1.Bd3+?
      • 1...Kxf3
        • 2.Qh1#
      • 1...Kxd3!
    • 1.Qg6?
      • 1...gxf3
        • 2.d3#
      • 1...d3
        • 2.Bb7#
      • 1...e5
        • 2.Qxf5#
        • 2.Qc6#
      • 1...Kxf3!
    • 1.Qh1?
      • threat
        • 2.d3#
      • 1...Rb5
        • 2.Se1#
        • 2.Se5#
      • 1...d3!
  • Keys
    • 1.Sg8!
      • 1...Kxf3
        • 2.Qh1#
      • 1...Kd5
        • 2.Qb7#
      • 1...gxf3
        • 2.Sf6#
      • 1...e5
        • 2.Qb7#
      • 1...d3
        • 2.Bb7#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINR(e),OGATEB,S_FLIGHT,XS(D)::QAB(J)
    • P(b);SBLOCK::B(H)
    • P(d);SBLOCK,XS(D)::P(B)
    • P(f);N_GUARD::QAB1(J),XR(e)
  • Tries
    • Try
      • K(A);P-FLIGHT,XP(a)
      • Threat
        • B(H)
      • Vars
        • K(c);N_SPINR(e),OGATEB,S_FLIGHT,XS(D)::QAB(J)
      • Refutation
        • P(b);CHECK
    • Try
      • S(I);XR(e)
      • Vars
        • P(f);P_SPINP(f),SBLOCK,XS(I)::QAB(J)
        • P(b);SBLOCK::B(H)
      • Refutation
        • P(f);
    • Try
      • S(I);
      • Vars
        • K(c);N_SPINR(e),OGATEB,S_FLIGHT,XS(D)::QAB(J)
        • K(c);N_SPINR(e),S_FLIGHT::QAB(J)
        • P(f);::QAB(J)
        • P(b);SBLOCK::B(H)
      • Refutation
        • P(d);XS(D)
    • Try
      • B(H);CHECK
      • Vars
        • K(c);N_SPINR(e),S_FLIGHT,XS(D)::QAB(J)
      • Refutation
        • K(c);S_FLIGHT,XB(H)
    • Try
      • Q(J);
      • Vars
        • P(d);SBLOCK,XS(D)::P(B)
        • P(b);SBLOCK::B(H)
      • Refutation
        • K(c);N_SPINR(e),S_FLIGHT,XS(D)
    • Try
      • Q(J);N_PINR(e)
      • Threat
        • P(B)
      • Refutation
        • P(b);
  • Actual
    • S(I);
    • Vars
      • K(c);N_SPINR(e),OGATEB,S_FLIGHT,XS(D)::QAB(J)
      • K(c);N_SPINR(e),S_FLIGHT::QAB(J)
      • P(d);SBLOCK,XS(D)::S(I)
      • P(f);::QAB(J)
      • P(b);SBLOCK::B(H)
HTML5 logo

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).