MESON Chess Problem Database

Problem Display
PID: 175202 (5R2/4k3/1K2P3/5npN/2NP2p1/4Q1r1/B6B/5R2 w - - 0 1)

Looijen, JW

The Times, 1902

5R2/4k3/1K2P3/5npN/2NP2p1/4Q1r1/B6B/5R2

#2

10 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd4
      • 2.R1f7#
    • 1...Sh4
      • 2.R1f7#
    • 1...Sg7
      • 2.R1f7#
  • Tries
    • 1.R1xf5?
      • threat
        • 2.R5f7#
      • 1...Rf3
        • 2.Bd6#
      • 1...Rxe3!
    • 1.Qxg5+?
      • 1...Kxf8
        • 2.Qd8#
      • 1...Kxe6!
  • Keys
    • 1.Sd6!
      • 1...Kxd6
        • 2.Qa3#
      • 1...Kxf8
        • 2.e7#
      • 1...Rxe3
        • 2.Re8#
      • 1...Sxe3
        • 2.Sc8#
      • 1...Sxd4
        • 2.Sc8#
      • 1...Sxd6
        • 2.Qxg5#
      • 1...Rg1
        • 2.Re8#
      • 1...Rg2
        • 2.Re8#
      • 1...Rf3
        • 2.Re8#
      • 1...Rh3
        • 2.Re8#
      • 1...Sh4
        • 2.Sc8#
      • 1...Sh6
        • 2.Sc8#
      • 1...Sg7
        • 2.Sc8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 3
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • S(c);OGATE,XP(F)::R1(A)
    • S(c);OGATE::R1(A)
  • Tries
    • Try
      • R(A);XS(c)
      • Threat
        • R1(A)
      • Vars
        • R(a);OGATE::B(C)
      • Refutation
        • R(a);XQ(D)
    • Try
      • Q(D);CHECK,XP(d)
      • Vars
        • K(e);OGATE,P_SPINS(c),S_FLIGHT,XR(J)::QAR2(D)
      • Refutation
        • K(e);P-FLIGHT,XP(I)
  • Actual
    • S(E);
    • Vars
      • K(e);OGATEB,P_SPINR(a),S_FLIGHT,XS(E)::QAB(D)
      • K(e);OGATE,P_SPINS(c),S_FLIGHT,XR(J)::P(I)
      • R(a);XQ(D)::R1(J)
      • S(c);XQ(D)::S(E)
      • S(c);XP(F)::S(E)
      • S(c);SBLOCK,XS(E)::QAB(D),XP(d)
      • R(a);::R1(J)
      • S(c);::S(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).