MESON Chess Problem Database

Problem Display
PID: 4510 (6Q1/pppp4/Pkb3R1/3PP3/1P3p2/4pP2/3NB3/5K2 w - - 0 1)

Gocher, J

East Anglian Chess Ty., 1873

6Q1/pppp4/Pkb3R1/3PP3/1P3p2/4pP2/3NB3/5K2

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...bxa6
      • 2.Qb8#
  • Tries
    • 1.Sb1?
      • 1...bxa6
        • 2.Qb8#
      • 1...d6!
    • 1.Sb3?
      • 1...bxa6
        • 2.Qb8#
      • 1...d6!
    • 1.Se4?
      • 1...bxa6
        • 2.Qb8#
      • 1...d6!
    • 1.Rxc6+?
      • 1...bxc6
        • 2.Qb8#
      • 1...dxc6!
    • 1.Rf6?
      • 1...exd2
        • 2.Qg1#
      • 1...bxa6
        • 2.Qb8#
      • 1...d6!
    • 1.Rh6?
      • 1...exd2
        • 2.Qg1#
      • 1...bxa6
        • 2.Qb8#
      • 1...d6!
    • 1.Qa8?
      • threat
        • 2.Qxb7#
      • 1...bxa6
        • 2.Qb8#
      • 1...d6!
    • 1.Qc8?
      • threat
        • 2.Qxb7#
      • 1...bxa6
        • 2.Qxa6#
        • 2.Qb8#
      • 1...d6!
    • 1.Qf8?
      • threat
        • 2.Qc5#
      • 1...bxa6
        • 2.Qb8#
      • 1...d6!
  • Keys
    • 1.Rd6!
      • 1...exd2
        • 2.Qg1#
      • 1...bxa6
        • 2.Qb8#
      • 1...cxd6
        • 2.Qd8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(f);OGATEB,XP(H)::QAR2(J)
  • Tries
    • Try
      • S(B);
      • Vars
        • P(f);OGATEB,XP(H)::QAR2(J)
      • Refutation
        • P(h);N_SPINB(d)
    • Try
      • S(B);
      • Vars
        • P(f);OGATEB,XP(H)::QAR2(J)
      • Refutation
        • P(h);N_SPINB(d)
    • Try
      • S(B);
      • Vars
        • P(f);OGATEB,XP(H)::QAR2(J)
      • Refutation
        • P(h);N_SPINB(d)
    • Try
      • R(I);CHECK,XB(d)
      • Vars
        • P(f);S_CUTP(h),XR(I)::QAR2(J)
      • Refutation
        • P(h);XR(I)
    • Try
      • R(I);
      • Vars
        • P(a);OGATEB,XS(B)::QAB(J)
        • P(f);OGATEB,XP(H)::QAR2(J)
      • Refutation
        • P(h);N_SPINB(d)
    • Try
      • R(I);
      • Vars
        • P(a);OGATEB,XS(B)::QAB(J)
        • P(f);OGATEB,XP(H)::QAR2(J)
      • Refutation
        • P(h);N_SPINB(d)
    • Try
      • Q(J);
      • Threat
        • QAR1(J),XP(f)
      • Vars
        • P(f);OGATEB,XP(H)::QAR2(J)
      • Refutation
        • P(h);N_SPINB(d)
    • Try
      • Q(J);
      • Threat
        • QAR1(J),XP(f)
      • Refutation
        • P(h);N_SPINB(d)
    • Try
      • Q(J);
      • Threat
        • QAB1(J)
      • Vars
        • P(f);OGATEB,XP(H)::QAR2(J)
      • Refutation
        • P(h);N_SPINB(d)
  • Actual
    • R(I);
    • Vars
      • P(a);OGATEB,XS(B)::QAB(J)
      • P(f);OGATEB,XP(H)::QAR2(J)
      • P(g);N_SPINB(d),OGATEB,XR(I)::QAB(J)
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).