MESON Chess Problem Database

Problem Display
PID: 120968 (2K1B2B/4pb1p/6Rn/3p1k1r/2p3pp/8/3NQPR1/6N1 w - - 0 1)

Stubbs, Charles Francis

Checkmate, 1901

2K1B2B/4pb1p/6Rn/3p1k1r/2p3pp/8/3NQPR1/6N1

#2

9 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bxg6
      • 2.Qe5#
    • 1...Bg8
      • 2.Qe5#
    • 1...Sg8
      • 2.Qxg4#
    • 1...d4
      • 2.Qe4#
    • 1...hxg6
      • 2.Qe5#
  • Tries
    • 1.Bxf7?
      • threat
        • 2.Qe5#
      • 1...Sxf7
        • 2.Qxg4#
      • 1...e5
        • 2.Qxe5#
      • 1...Kf4!
    • 1.Rf6+?
      • 1...Kg5
        • 2.Sgf3#
        • 2.Sh3#
        • 2.Sdf3#
        • 2.Qe3#
        • 2.f4#
      • 1...exf6!
    • 1.Qd3+?
      • 1...Kf4
        • 2.Se2#
      • 1...cxd3!
    • 1.Qe6+?
      • 1...Kf4
        • 2.Se2#
      • 1...Bxe6+!
  • Keys
    • 1.Sh3!
      • 1...Be6+
        • 2.Qxe6#
      • 1...Kxg6
        • 2.Qe6#
      • 1...Bxg6
        • 2.Qe5#
      • 1...Bxe8
        • 2.Qe6#
      • 1...gxh3
        • 2.Qf3#
        • 2.Qe5#
      • 1...hxg6
        • 2.Qe5#
      • 1...Rg5
        • 2.Rxg5#
      • 1...Bg8
        • 2.Qe5#
      • 1...Sg8
        • 2.Qxg4#
      • 1...c3
        • 2.Qd3#
      • 1...g3
        • 2.Qxh5#
      • 1...d4
        • 2.Qe4#
      • 1...e5
        • 2.Rf6#
      • 1...e6
        • 2.Rf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • B(i);XR(F)::QAR1(C)
    • B(i);::QAR1(C)
    • S(g);N_GUARD::QAB1(C),XP(b)
    • P(d);N_GUARD::QAB1(C)
    • P(j);SBLOCK,XR(F)::QAR1(C)
  • Tries
    • Try
      • B(H);XB(i)
      • Threat
        • QAR1(C)
      • Vars
        • S(g);N_GUARD,XB(H)::QAB1(C),XP(b)
        • P(h);::QAR1(C),XP(h)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • R(F);CHECK
      • Refutation
        • P(h);XR(F)
    • Try
      • Q(C);CHECK
      • Vars
        • K(e);P-FLIGHT::S(A)
      • Refutation
        • P(a);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(e);P-FLIGHT::S(A)
      • Refutation
        • B(i);CHECK,XQ(C)
  • Actual
    • S(A);
    • Vars
      • B(i);CHECK,N_GUARD::QAB1(C),XB(i)
      • K(e);P_SPINB(i),P_SPINP(b),S_FLIGHT,XR(F)::QAR2(C)
      • B(i);XR(F)::QAR1(C)
      • B(i);N_GUARD,XB(H)::QAB1(C)
      • P(j);SBLOCK,XR(F)::QAR1(C)
      • R(f);N_GUARD::R1(F),XR(f)
      • B(i);::QAR1(C)
      • S(g);N_GUARD::QAB1(C),XP(b)
      • P(a);N_GUARD::QAB(C)
      • P(b);OGATE::QAR2(C),XR(f)
      • P(d);N_GUARD::QAB1(C)
      • P(h);N_GUARD::R1(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).