MESON Chess Problem Database

Problem Display
PID: 273775 (8/1b6/q7/2B1N2Q/p4p2/6pB/3p2P1/3K1k2 w - - 0 1)

Way, Charles F

The Problemist, 1932

8/1b6/q7/2B1N2Q/p4p2/6pB/3p2P1/3K1k2

#2

6 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Qe2+
      • 2.Qxe2#
    • 1...Qa5
      • 2.Qe2#
    • 1...Qb6
      • 2.Qe2#
    • 1...Qc6
      • 2.Qe2#
    • 1...Qd6
      • 2.Qe2#
    • 1...Qe6
      • 2.Qe2#
    • 1...Qf6
      • 2.Qe2#
    • 1...Qg6
      • 2.Qe2#
    • 1...Qh6
      • 2.Qe2#
    • 1...Qa7
      • 2.Qe2#
    • 1...Qa8
      • 2.Qe2#
    • 1...Bxg2
      • 2.Qf3#
    • 1...Bf3+
      • 2.Qxf3#
    • 1...Bc8
      • 2.Qf3#
  • Tries
    • 1.Sc4?
      • threat
        • 2.Sxd2#
        • 2.Qe2#
      • 1...Bf3+
        • 2.Qxf3#
      • 1...Qa5
        • 2.Qe2#
      • 1...Qd6
        • 2.Qe2#
      • 1...Qe6
        • 2.Sxd2#
      • 1...f3
        • 2.Sxd2#
      • 1...Qxc4!
    • 1.Bf5?
      • threat
        • 2.Qh1#
      • 1...Qe2+
        • 2.Qxe2#
      • 1...Bf3+
        • 2.Qxf3#
      • 1...Kxg2
        • 2.Qh3#
      • 1...Qh6
        • 2.Qe2#
      • 1...Bxg2!
    • 1.Be6?
      • threat
        • 2.Qh1#
      • 1...Qe2+
        • 2.Qxe2#
      • 1...Bf3+
        • 2.Qxf3#
      • 1...Kxg2
        • 2.Qh3#
      • 1...Bxg2!
    • 1.Bd7?
      • threat
        • 2.Qh1#
      • 1...Qe2+
        • 2.Qxe2#
      • 1...Bf3+
        • 2.Qxf3#
      • 1...Kxg2
        • 2.Qh3#
      • 1...Qh6
        • 2.Qe2#
      • 1...Bxg2!
  • Keys
    • 1.Bc8!
      • threat
        • 2.Qh1#
      • 1...Qe2+
        • 2.Qxe2#
      • 1...Bf3+
        • 2.Qxf3#
      • 1...Kxg2
        • 2.Qh3#
      • 1...Bxg2
        • 2.Bxa6#
      • 1...Qh6
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 10
  • Sets
    • Q(f);CHECK,N_GUARD::QAB1(F),XQ(f)
    • Q(f);N_GUARD::QAB1(F)
    • B(g);N_GUARD,P_SPINB(g),XP(B)::QAR2(F)
    • B(g);CHECK,N_GUARD::QAR2(F),XB(g)
    • B(g);N_GUARD::QAR2(F)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • B(g);CHECK,N_GUARD::QAR2(F),XB(g)
        • Q(f);::QAB1(F)
        • Q(f);::S(E),XP(b)
        • P(e);::S(E),XP(b)
      • Refutation
        • Q(f);XS(E)
    • Try
      • B(C);
      • Threat
        • QAR2(F)
      • Vars
        • Q(f);CHECK,N_GUARD::QAB1(F),XQ(f)
        • B(g);CHECK,N_GUARD::QAR2(F),XB(g)
        • K(a);OGATEB,S_FLIGHT,XP(B)::QAB1(F)
        • Q(f);N_GUARD::QAB1(F)
      • Refutation
        • B(g);XP(B)
    • Try
      • B(C);
      • Threat
        • QAR2(F)
      • Vars
        • Q(f);CHECK,N_GUARD::QAB1(F),XQ(f)
        • B(g);CHECK,N_GUARD::QAR2(F),XB(g)
        • K(a);OGATEB,S_FLIGHT,XP(B)::QAB1(F)
      • Refutation
        • B(g);XP(B)
    • Try
      • B(C);
      • Threat
        • QAR2(F)
      • Vars
        • Q(f);CHECK,N_GUARD::QAB1(F),XQ(f)
        • B(g);CHECK,N_GUARD::QAR2(F),XB(g)
        • K(a);OGATEB,S_FLIGHT,XP(B)::QAB1(F)
        • Q(f);N_GUARD::QAB1(F)
      • Refutation
        • B(g);XP(B)
  • Actual
    • B(C);
    • Threat
      • QAR2(F)
    • Vars
      • Q(f);CHECK,N_GUARD::QAB1(F),XQ(f)
      • B(g);CHECK,N_GUARD::QAR2(F),XB(g)
      • K(a);OGATEB,S_FLIGHT,XP(B)::QAB1(F)
      • B(g);OGATE,SBLOCK,XP(B)::B(C),XQ(f)
      • Q(f);N_GUARD::QAB1(F)
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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).