MESON Chess Problem Database

Problem Display
PID: 16163 (8/7p/7P/3p2B1/3PpQ2/pPPk2p1/N1np2p1/1n1B2K1 w - - 0 1)

Green, Joshua

StrateGems, 2000

8/7p/7P/3p2B1/3PpQ2/pPPk2p1/N1np2p1/1n1B2K1

#2

9 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sxc3
      • 2.Qxd2#
    • 1...Sa1
      • 2.Qe3#
    • 1...Se1
      • 2.Qe3#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sb4
      • 2.Qe3#
    • 1...Sxd4
      • 2.Qe3#
    • 1...e3
      • 2.Qf5#
  • Tries
    • 1.Kxg2?
      • threat
        • 2.Qf1#
      • 1...Se3+
        • 2.Qxe3#
      • 1...Sxc3
        • 2.Qxd2#
      • 1...Sxd4
        • 2.Qe3#
      • 1...e3
        • 2.Qf5#
      • 1...Se1+!
    • 1.Sb4+?
      • 1...Sxb4
        • 2.Qe3#
      • 1...Kxc3!
    • 1.Bxc2+?
      • 1...Ke2
        • 2.Qe3#
      • 1...Kxc2!
    • 1.Qxg3+?
      • 1...Se3
        • 2.Qxe3#
      • 1...e3!
    • 1.Qf2?
      • threat
        • 2.Be2#
        • 2.Qe2#
      • 1...Sxc3
        • 2.Qxd2#
      • 1...Sxd4
        • 2.Qe3#
        • 2.Qxd4#
      • 1...e3
        • 2.Qf5#
      • 1...Sa1
        • 2.Qe3#
        • 2.Qe2#
      • 1...Se1
        • 2.Qe3#
        • 2.Qe2#
      • 1...Se3
        • 2.Qxe3#
        • 2.Qe2#
      • 1...Sb4
        • 2.Qe3#
        • 2.Qe2#
      • 1...gxf2+!
    • 1.Qf3+?
      • 1...Se3
        • 2.Qe2#
        • 2.Qxe3#
      • 1...e3
        • 2.Be2#
        • 2.Qf5#
      • 1...exf3!
  • Keys
    • 1.Qc7!
      • 1...Sxc3
        • 2.Qxc3#
      • 1...Sxd4
        • 2.Sb4#
      • 1...e3
        • 2.Qxh7#
      • 1...Sa1
        • 2.Sb4#
      • 1...Se1
        • 2.Sb4#
      • 1...Se3
        • 2.Sb4#
      • 1...Sb4
        • 2.Sxb4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 7
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD,XP(E)::QAR1(G),XP(c)
    • S(b);N_GUARD::QAR1(G)
    • S(b);N_GUARD::QAR1(G),XS(b)
    • S(b);N_GUARD,XP(F)::QAR1(G)
    • P(h);OGATEB::QAB(G)
  • Tries
    • Try
      • K(B);P-FLIGHT,XP(d)
      • Threat
        • QAB(G)
      • Vars
        • S(b);CHECK,N_GUARD::QAR1(G),XS(b)
        • S(a);N_GUARD,XP(E)::QAR1(G),XP(c)
        • S(b);N_GUARD,XP(F)::QAR1(G)
        • P(h);OGATEB::QAB(G)
      • Refutation
        • S(b);CHECK
    • Try
      • S(C);CHECK
      • Vars
        • S(b);XS(C)::QAR1(G)
      • Refutation
        • K(f);P-FLIGHT,XP(E)
    • Try
      • B(A);CHECK,XS(b)
      • Vars
        • K(f);S_FLIGHT::QAR1(G)
      • Refutation
        • K(f);S_FLIGHT,XB(A)
    • Try
      • Q(G);CHECK,XP(g)
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAR1(G),XS(b)
      • Refutation
        • P(h);P_SPINP(h)
    • Try
      • Q(G);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD,XP(E)::QAR1(G),XP(c)
        • P(h);OGATEB::QAB(G)
      • Refutation
        • P(g);CHECK,XQ(G)
    • Try
      • Q(G);CHECK
      • Refutation
        • P(h);XQ(G)
  • Actual
    • Q(G);
    • Vars
      • S(a);OGATE,XP(E)::QAR1(G),XS(a)
      • S(b);N_GUARD,XP(F)::S(C)
      • P(h);OGATEB::QAB(G),XP(j)
      • S(b);N_GUARD::S(C)
      • S(b);N_GUARD::S(C),XS(b)
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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).