MESON Chess Problem Database

Problem Display
PID: 122965 (2bK4/3n2p1/1N1p2P1/3Pk3/4Bp1P/1Pp2p2/Q4N2/8 w - - 0 1)

Barry, Henry William

Lidove noviny, 1908

2bK4/3n2p1/1N1p2P1/3Pk3/4Bp1P/1Pp2p2/Q4N2/8

#2

9 + 8

6490 yacpdb 2009
14868 Pirnie Collection 2011

SOLUTION

  • SOUND
  • Sets
    • 1...Kf6
      • 2.Sg4#
    • 1...c2
      • 2.Qa1#
      • 2.Qb2#
  • Tries
    • 1.Sc4+?
      • 1...Kf6
        • 2.Sg4#
      • 1...Kd4!
    • 1.Sxd7+?
      • 1...Kd4
        • 2.Qa7#
      • 1...Bxd7!
    • 1.Qa1?
      • threat
        • 2.Qxc3#
      • 1...Kf6
        • 2.Sg4#
      • 1...Kd4!
    • 1.Qc2?
      • threat
        • 2.Qxc3#
      • 1...Kf6
        • 2.Sg4#
      • 1...Kd4!
    • 1.Qd2?
      • threat
        • 2.Qxc3#
      • 1...Kf6
        • 2.Sg4#
        • 2.Qxf4#
      • 1...c2
        • 2.Qc3#
      • 1...cxd2!
    • 1.Qa5?
      • threat
        • 2.Qxc3#
      • 1...Kf6
        • 2.Sg4#
      • 1...c2
        • 2.Qc3#
        • 2.Qa1#
      • 1...Kd4!
  • Keys
    • 1.Qa7!
      • 1...Kd4
        • 2.Sxd7#
      • 1...Kf6
        • 2.Sg4#
      • 1...Sxb6
        • 2.Qxg7#
      • 1...Ba6
        • 2.Sxd7#
      • 1...Bb7
        • 2.Sxd7#
      • 1...Sc5
        • 2.Qxg7#
      • 1...Sf6
        • 2.Sc4#
      • 1...Sb8
        • 2.Qxg7#
      • 1...Sf8
        • 2.Qxg7#
      • 1...c2
        • 2.Qa1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT::S(B)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(d);S_FLIGHT::S(B)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(G);CHECK,XS(f)
      • Vars
        • K(d);S_FLIGHT::QAB(A)
      • Refutation
        • B(h);XS(G)
    • Try
      • Q(A);P_PINP(a)
      • Threat
        • QAB(A),XP(a)
      • Vars
        • K(d);S_FLIGHT::S(B)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB(A),XP(a)
      • Vars
        • K(d);S_FLIGHT::S(B)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB(A),XP(a)
      • Vars
        • P(a);::QAB(A)
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAB(A),XP(a)
      • Vars
        • K(d);S_FLIGHT::S(B)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(d);S_FLIGHT::QAB(A)+S(G),XS(f)
      • K(d);S_FLIGHT::S(B)
      • S(f);OGATE,XS(G)::QAB(A),XP(g)
      • B(h);N_GUARD::S(G),XS(f)
      • S(f);OGATE::QAB(A),XP(g)
      • S(f);SBLOCK::S(G)
      • P(a);OGATEB::QAB(A)
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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).