MESON Chess Problem Database

Problem Display
PID: 194101 (3kB2R/2p5/6Qp/2nb1N1K/2pqp3/2P1p3/4P3/3R4 w - - 0 1)

Westbury, Eric Ernest

3rd HM., L'Eco degli Scacchi, 1917

3kB2R/2p5/6Qp/2nb1N1K/2pqp3/2P1p3/4P3/3R4

#2

8 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bc6
      • 2.Bxc6#
    • 1...Bb7
      • 2.Ba4#
      • 2.Bb5#
      • 2.Bc6#
    • 1...Ba8
      • 2.Ba4#
      • 2.Bb5#
      • 2.Bc6#
  • Tries
    • 1.Ba4+?
      • 1...Bg8
        • 2.Rxg8#
        • 2.Qe8#
        • 2.Qxg8#
      • 1...Qxh8!
    • 1.Bb5+?
      • 1...Bg8
        • 2.Rxg8#
        • 2.Qe8#
        • 2.Qxg8#
      • 1...Qxh8!
    • 1.Bc6+?
      • 1...Bg8
        • 2.Rxg8#
        • 2.Qe8#
        • 2.Qxg8#
      • 1...Qxh8!
    • 1.Bd7+?
      • 1...Kxd7
        • 2.Qe8#
      • 1...Bg8
        • 2.Qe8#
      • 1...Qxh8!
  • Keys
    • 1.Qc6!
      • 1...Bf7+
        • 2.Bxf7#
      • 1...Kc8
        • 2.Bd7#
      • 1...Qxc3
        • 2.Qa8#
      • 1...Qxh8
        • 2.Qa8#
      • 1...Qxd1
        • 2.Bf7#
      • 1...Bxc6
        • 2.Bxc6#
      • 1...Qe5
        • 2.Qa8#
      • 1...Qf6
        • 2.Qa8#
      • 1...Qg7
        • 2.Qa8#
      • 1...Qd2
        • 2.Bf7#
      • 1...Qd3
        • 2.Bf7#
      • 1...Be6
        • 2.Bf7#
      • 1...Bg8
        • 2.Qa8#
      • 1...Sb3
        • 2.Qd7#
      • 1...Sd3
        • 2.Qd7#
      • 1...Sa4
        • 2.Qd7#
      • 1...Sa6
        • 2.Qd7#
      • 1...Se6
        • 2.Qd7#
      • 1...Sb7
        • 2.Qd7#
      • 1...Sd7
        • 2.Qxd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 19
    • REMOVED MATES = 0
  • Sets
    • B(f);N_GUARD,P_SPINQ(c)::R(H)+B(G),XB(f)
  • Tries
    • Try
      • B(G);CHECK
      • Refutation
        • Q(c);P_SPINB(f),XR(H)
    • Try
      • B(G);CHECK
      • Refutation
        • Q(c);P_SPINB(f),XR(H)
    • Try
      • B(G);CHECK
      • Refutation
        • Q(c);P_SPINB(f),XR(H)
    • Try
      • B(G);CHECK
      • Vars
        • K(i);P-FLIGHT,XB(G)::QAB1(F)
        • B(f);P_SPINB(f)::QAR1(F)
      • Refutation
        • Q(c);XR(H)
  • Actual
    • Q(F);
    • Vars
      • B(f);CHECK,P_SPINQ(c)::R(H)+B(G),XB(f)
      • K(i);P-FLIGHT,P_SPINP(h)::R(H)+B(G),DCHECK
      • Q(c);P_SPINB(f),XP(C)::QAR(F)
      • Q(c);P_SPINB(f),XR(H)::QAR(F)
      • Q(c);N_GUARD,P_PINP(B),XR(A)::R(H)+B(G)
      • B(f);OGATE,P_SPINQ(c),XQ(F)::R(H)+B(G),XB(f)
      • Q(c);P_PINS(D),P_SPINB(f)::QAR(F)
      • Q(c);P_SPINB(f)::QAR(F)
      • Q(c);N_GUARD::R(H)+B(G)
      • B(f);P_SPINQ(c)::R(H)+B(G)
      • B(f);N_GUARD,P_SPINQ(c)::QAR(F)
      • S(e);N_GUARD::QAR1(F)
      • S(e);N_GUARD::QAR1(F),XS(e)
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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).