MESON Chess Problem Database

Problem Display
PID: 103729 (3N4/3N4/2pp4/3k4/8/1P1r2p1/B2P2K1/B2Q4 w - - 0 1)

Rowland, Thomas B

Croydon Guardian, 1883

3N4/3N4/2pp4/3k4/8/1P1r2p1/B2P2K1/B2Q4

#2

8 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Rf3
      • 2.Qxf3#
    • 1...c5
      • 2.Sf6#
  • Tries
    • 1.Sb6+?
      • 1...Ke4
        • 2.Qg4#
      • 1...Kc5!
    • 1.b4+?
      • 1...Ke4
        • 2.Qg4#
      • 1...Rb3!
  • Keys
    • 1.Bb1!
      • 1...Rxd2+
        • 2.Qxd2#
      • 1...Ke4
        • 2.Qf3#
      • 1...Rxb3
        • 2.Qxb3#
      • 1...Rc3
        • 2.dxc3#
      • 1...Re3
        • 2.dxe3#
      • 1...Rf3
        • 2.Qxf3#
      • 1...Rd4
        • 2.Qh5#
      • 1...c5
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(a);N_GUARD::QAB(B),XR(a)
    • P(d);SBLOCK::S(G)
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR2(B)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • P(F);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR2(B)
      • Refutation
        • R(a);P_SPINR(a)
  • Actual
    • B(C);
    • Vars
      • R(a);CHECK,OGATE,P_SPINR(a),XP(D)::QAR(B),XR(a)
      • K(c);P_SPINR(a),S_FLIGHT::QAB1(B)
      • R(a);OGATE,XP(F)::QAB(B),XR(a)
      • R(a);OGATE::QAR(B)+P(D),XR(a)
      • R(a);N_GUARD::QAB(B),XR(a)
      • R(a);::QAR(B)
      • P(d);SBLOCK::S(G)
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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).