MESON Chess Problem Database

Problem Display
PID: 79009 (6R1/1Q3n2/8/2R2NPk/2b2Bp1/3rp2P/2B1N3/4bK2 w - - 0 1)

Stephenson, Brian D

BCSC Final, 2000-2001

6R1/1Q3n2/8/2R2NPk/2b2Bp1/3rp2P/2B1N3/4bK2

#2

10 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Qxf7#
    • 1...Bd2
      • 2.Seg3#
    • 1...Bc3
      • 2.Seg3#
    • 1...Bg3
      • 2.Sexg3#
    • 1...Bb4
      • 2.Seg3#
    • 1...Ba5
      • 2.Seg3#
    • 1...Bb5
      • 2.Qxf7#
    • 1...Ba6
      • 2.Qxf7#
    • 1...Se5
      • 2.Qh7#
    • 1...Sxg5
      • 2.Rxg5#
    • 1...Sd6
      • 2.Qh7#
    • 1...Sd8
      • 2.Qh7#
    • 1...Sh8
      • 2.Qh7#
    • 1...gxh3
      • 2.Qf3#
    • 1...g3
      • 2.Qf3#
  • Tries
    • 1.Kxe1?
      • threat
        • 2.Seg3#
      • 1...gxh3
        • 2.Qf3#
      • 1...g3
        • 2.Sexg3#
        • 2.Qf3#
      • 1...Rd1+!
    • 1.Sg7+?
      • 1...Kg6
        • 2.Qe4#
      • 1...Kh4!
    • 1.Rh8+?
      • 1...Sh6
        • 2.Rxh6#
      • 1...Sxh8
        • 2.Qh7#
      • 1...Kg6!
  • Keys
    • 1.Bg3!
      • threat
        • 2.Sf4#
      • 1...Bxg3
        • 2.Sexg3#
      • 1...gxh3
        • 2.Qf3#
      • 1...Rd1
        • 2.Sg7#
      • 1...Rd2
        • 2.Sg7#
      • 1...Ra3
        • 2.Sg7#
      • 1...Rb3
        • 2.Sg7#
      • 1...Rc3
        • 2.Sg7#
      • 1...Rd4
        • 2.Sg7#
      • 1...Rd5
        • 2.Qxf7#
      • 1...Rd6
        • 2.Sg7#
      • 1...Rd7
        • 2.Sg7#
      • 1...Rd8
        • 2.Sg7#

This is a version of 17768

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 12
  • Sets
    • R(b);P_PINS(C),S_CUTB(d)::QAB(I),XS(g)
    • B(a);N_GUARD::S(C)
    • B(a);N_GUARD::S(C),XB(a)
    • B(d);N_GUARD::QAB(I),XS(g)
    • B(d);N_GUARD,SBLOCK::QAB(I),XS(g)
    • S(g);OGATE::QAR2(I)
    • S(g);OGATE,XP(H)::R1(J),XS(g)
    • P(e);OGATEB,XP(D)::QAB(I)
    • P(e);OGATEB::QAB(I)
  • Tries
    • Try
      • K(A);P-FLIGHT,XB(a)
      • Threat
        • S(C)
      • Vars
        • P(e);OGATEB,XP(D)::QAB(I)
      • Refutation
        • R(b);CHECK
    • Try
      • S(G);CHECK
      • Vars
        • K(f);P_SPINR(b),S_FLIGHT::QAB(I)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • R(J);CHECK
      • Vars
        • S(g);N_GUARD,P_SPINS(g)::R1(J),XS(g)
        • S(g);OGATE,XR(J)::QAR2(I)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • B(E);
    • Threat
      • S(C)
    • Vars
      • B(a);XB(E)::S(C),XB(a)
      • P(e);OGATEB,XP(D)::QAB(I)
      • R(b);P_PINS(C)::S(G)
      • R(b);P_PINS(C),S_CUTB(d)::QAB(I),XS(g)
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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).