MESON Chess Problem Database

Problem Display
PID: 144136 (8/3p4/1n1Q2B1/p2N4/P1kqp1P1/3NP1K1/1R1P4/8 w - - 0 1)

Eglington, Thomas M

Brighton Society, 1903

(First published on Sat Sep 12 1903)

8/3p4/1n1Q2B1/p2N4/P1kqp1P1/3NP1K1/1R1P4/8

#2

10 + 6

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Qc3
      • 2.Sxb6#
    • 1...Qxe3+
      • 2.Sxe3#
    • 1...Qc5
      • 2.Se5#
    • 1...Qe5+
      • 2.Sxe5#
    • 1...Qf6
      • 2.Sxb6#
    • 1...Qg7
      • 2.Sxb6#
    • 1...Qh8
      • 2.Sxb6#
    • 1...Qxd3
      • 2.Sxb6#
    • 1...Sxd5
      • 2.Qa6#
  • Tries
    • 1.Sxb6+?
      • 1...Qxb6
        • 2.Se5#
        • 2.Bf7#
      • 1...Kxd3!
    • 1.Qc5+?
      • 1...Kxd3
        • 2.Sf4#
      • 1...Qxc5!
    • 1.Qc7+?
      • 1...Kxd3
        • 2.Sf4#
      • 1...Kxd5
        • 2.Sf4#
        • 2.Bf7#
      • 1...Qc5!
    • 1.Qc6+?
      • 1...Kxd3
        • 2.Sf4#
      • 1...Qc5
        • 2.Se5#
      • 1...dxc6!
  • Keys
    • 1.Bf7!
      • 1...Qxe3+
        • 2.Sxe3#
      • 1...Qe5+
        • 2.Sxe5#
      • 1...Kxd3
        • 2.Sf4#
      • 1...Qxb2
        • 2.Sxb6#
      • 1...Qxd3
        • 2.Sxb6#
        • 2.Qc7#
      • 1...Qxd5
        • 2.Se5#
      • 1...Sxa4
        • 2.Qa6#
      • 1...Sxd5
        • 2.Qa6#
      • 1...exd3
        • 2.Sxb6#
      • 1...Qc3
        • 2.Sxb6#
      • 1...Qc5
        • 2.Se5#
        • 2.Sxb6#
      • 1...Qf6
        • 2.Sxb6#
      • 1...Qg7
        • 2.Sxb6#
      • 1...Qh8
        • 2.Sxb6#
      • 1...Sa8
        • 2.Qa6#
      • 1...Sc8
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • Q(b);N_GUARD::S(H),XS(e)
    • Q(b);CHECK,XP(D)::S(H),XQ(b)
    • Q(b);N_GUARD::S(C)
    • Q(b);CHECK,N_GUARD::S(C),XQ(b)
    • Q(b);N_GUARD,P_PINP(D),XS(C)::S(H),XS(e)
    • S(e);OGATE,SBLOCK,XS(H)::QAB(I)
  • Tries
    • Try
      • S(H);CHECK,XS(e)
      • Refutation
        • K(a);P_SPINP(c),P_SPINQ(b),S_FLIGHT,XS(C)
    • Try
      • Q(I);CHECK
      • Vars
        • K(a);P_SPINP(c),S_FLIGHT,XS(C)::S(H)
      • Refutation
        • Q(b);XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • K(a);P_SPINP(c),S_FLIGHT,XS(C)::S(H)
      • Refutation
        • Q(b);P_SPINQ(b)
    • Try
      • Q(I);CHECK
      • Vars
        • K(a);P_SPINP(c),S_FLIGHT,XS(C)::S(H)
        • Q(b);P_SPINQ(b)::S(C)
      • Refutation
        • P(f);XQ(I)
  • Actual
    • B(J);
    • Vars
      • Q(b);CHECK,XP(D)::B(J)+S(H),DCHECK,XQ(b)
      • Q(b);CHECK,N_GUARD::S(C),XQ(b)
      • K(a);S_FLIGHT,XS(C)::S(H)
      • Q(b);XR(A)::B(J)+S(H),DCHECK,XS(e)
      • Q(b);N_GUARD,P_SPINQ(b),XS(H)::S(C)
      • S(e);OGATE,XP(F)::QAB(I)
      • S(e);OGATE,P_SPINS(e),XS(H)::QAB(I)
      • P(c);SBLOCK,XS(C)::B(J)+S(H),DCHECK,XS(e)
      • Q(b);::B(J)+S(H),DCHECK,XS(e)
      • Q(b);P_PINP(G)::B(J)+S(H),DCHECK,XS(e)
      • S(e);OGATE::QAB(I)
HTML5 logo

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).