MESON Chess Problem Database

Problem Display
PID: 226926 (8/4b3/1N3p1B/1R6/2P1P3/p1k4K/P1p1PQ2/1bn1n3 w - - 0 1)

Owen, Leonard E

Tidskrift for Schack, 1910

8/4b3/1N3p1B/1R6/2P1P3/p1k4K/P1p1PQ2/1bn1n3

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Bb4
      • 2.Qxf6#
    • 1...Bf8
      • 2.Qxf6#
    • 1...Sxe2
      • 2.Rb3#
    • 1...Sb3
      • 2.Rxb3#
    • 1...Scd3
      • 2.Rb3#
  • Tries
    • 1.Bxc1?
      • threat
        • 2.Rb3#
      • 1...Bb4
        • 2.Qxf6#
      • 1...Bxa2!
    • 1.Qe3+?
      • 1...Scd3
        • 2.Rb3#
      • 1...Sed3!
    • 1.Qc5?
      • threat
        • 2.Sa4#
        • 2.Sd5#
      • 1...Sxe2
        • 2.Rb3#
      • 1...Sb3
        • 2.Sa4#
        • 2.Rxb3#
      • 1...Bxc5!
  • Keys
    • 1.Rb4!
      • threat
        • 2.Sd5#
      • 1...Kxb4
        • 2.Bd2#
      • 1...Bxb4
        • 2.Qxf6#
      • 1...Sxe2
        • 2.Rb3#
      • 1...Sb3
        • 2.Rxb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(h);N_GUARD::QAB(C),XP(g)
    • S(b);N_GUARD,XP(B)::R1(G)
    • S(b);N_GUARD::R1(G),XS(b)
    • S(b);N_GUARD::R1(G)
  • Tries
    • Try
      • B(I);XS(b)
      • Threat
        • R1(G)
      • Vars
        • B(h);N_GUARD::QAB(C),XP(g)
      • Refutation
        • B(a);XP(A)
    • Try
      • Q(C);CHECK
      • Vars
        • S(b);P_SPINS(b)::R1(G)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);N_GUARD,XP(B)::R1(G)
      • Refutation
        • B(h);XQ(C)
  • Actual
    • R(G);
    • Threat
      • S(H)
    • Vars
      • K(f);S_FLIGHT,XR(G)::B(I)
      • B(h);N_GUARD,SBLOCK,XR(G)::QAB(C),XP(g)
      • S(b);N_GUARD,XP(B)::R1(G)
      • S(b);N_GUARD::R1(G),XS(b)
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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).