MESON Chess Problem Database

Problem Display
PID: 21562 (5R2/3K4/8/8/Q3pB2/b3Nk1N/4p1n1/4Rq1B w - - 0 1)

Tucker, HJ

Melbourne Leader, 1919

5R2/3K4/8/8/Q3pB2/b3Nk1N/4p1n1/4Rq1B

#2

8 + 6

3360 Simple Two-move Themes 1924

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe1
      • 2.Bxg2#
    • 1...Qf2
      • 2.Sg5#
  • Tries
    • 1.Sg4?
      • threat
        • 2.Sh2#
        • 2.Se5#
      • 1...Qxh1
        • 2.Se5#
      • 1...Qg1
        • 2.Se5#
      • 1...Bb2
        • 2.Sh2#
      • 1...Bd6
        • 2.Sh2#
      • 1...Kxg4!
    • 1.Be5+?
      • 1...Kxe3
        • 2.Qd4#
      • 1...Bxf8!
    • 1.Rg8?
      • threat
        • 2.Rg3#
      • 1...Qxe1
        • 2.Bxg2#
      • 1...Qf2!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Rxf1#
      • 1...exd1Q+
        • 2.Bd6#
      • 1...exd1R+
        • 2.Bd6#
      • 1...Qxe1
        • 2.Bxg2#
      • 1...Qxh1
        • 2.Qxe2#
      • 1...exd1S
        • 2.Bd6#
      • 1...exd1B
        • 2.Bd6#
      • 1...Qg1
        • 2.Qxe2#
      • 1...Qf2
        • 2.Sg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • Q(a);N_GUARD,XR(A)::B(B),XS(c)
    • Q(a);SBLOCK::S(D)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(a);N_SPINS(c),XB(B)::S(C)
        • Q(a);::S(C)
        • B(d);::S(C)
      • Refutation
        • K(e);N_SPINS(c),S_FLIGHT,XS(C)
    • Try
      • B(F);CHECK
      • Vars
        • K(e);N_SPINS(c),P-FLIGHT,P_SPINP(b),XS(C)::QAB1(E)
      • Refutation
        • B(d);XR(H)
    • Try
      • R(H);
      • Threat
        • R1(H)
      • Vars
        • Q(a);N_GUARD,XR(A)::B(B),XS(c)
      • Refutation
        • Q(a);
  • Actual
    • Q(E);P_PINP(b)
    • Threat
      • R(A),XQ(a)
    • Vars
      • P(b);CHECK,N_SPINP(b),XQ(E)::R(H)+B(F)
      • Q(a);N_GUARD,XR(A)::B(B),XS(c)
      • Q(a);N_GUARD,N_SPINS(c),XB(B)::QAB1(E),XP(b)
      • P(b);N_SPINP(b),XQ(E)::R(H)+B(F)
      • Q(a);N_GUARD::QAB1(E),XP(b)
      • Q(a);SBLOCK::S(D)
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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).