MESON Chess Problem Database

Problem Display
PID: 198847 (8/2B1pr2/2P1k1P1/R1b3K1/5pPp/1PNp4/4r1n1/1B2Rb1Q w - - 0 1)

Dawson, Thomas Rayner

Western Daily News, 1921

8/2B1pr2/2P1k1P1/R1b3K1/5pPp/1PNp4/4r1n1/1B2Rb1Q

#2

11 + 10

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Rxe4#
    • 1...Re5+
      • 2.Rxe5#
    • 1...Rf5+
      • 2.gxf5#
    • 1...Be3
      • 2.Re5#
    • 1...Sxe1
      • 2.Qd5#
    • 1...Se3
      • 2.Qe4#
  • Tries
    • 1.Ba2?
      • threat
        • 2.b4#
      • 1...Re5+
        • 2.Rxe5#
      • 1...Rf5+
        • 2.gxf5#
      • 1...Sxe1
        • 2.Qd5#
      • 1...Be3
        • 2.Re5#
      • 1...Se3
        • 2.Qe4#
      • 1...Bb4!
  • Keys
    • 1.b4!
      • threat
        • 2.Ba2#
      • 1...Re5+
        • 2.Rxe5#
      • 1...Rf5+
        • 2.gxf5#
      • 1...Sxe1
        • 2.Qd5#
      • 1...Be3
        • 2.Re5#
      • 1...Se3
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • R(b);OGATE::R(B),XR(b)
    • R(b);CHECK,OGATE::R1(B),XR(b)
    • R(j);CHECK,OGATE::P(F),XR(j)
    • B(g);N_SPINR(b),OGATE::R1(G)
    • S(c);N_SPINR(b),OGATE,XR(B)::QAB1(C)
    • S(c);N_SPINR(b),OGATE::QAR2(C)
  • Tries
    • Try
      • B(A);
      • Threat
        • B(A)+P(D)
      • Vars
        • R(b);CHECK,OGATE::R1(B),XR(b)
        • R(j);CHECK,OGATE::P(F),XR(j)
        • S(c);N_SPINR(b),OGATE,XR(B)::QAB1(C)
        • B(g);N_SPINR(b),OGATE::R1(G)
        • S(c);N_SPINR(b),OGATE::QAR2(C)
      • Refutation
        • B(g);
  • Actual
    • P(D);
    • Threat
      • B(A)
    • Vars
      • R(b);CHECK,OGATE::R1(B),XR(b)
      • R(j);CHECK,OGATE::P(F),XR(j)
      • S(c);N_SPINR(b),OGATE,XR(B)::QAB1(C)
      • B(g);N_SPINR(b),OGATE::R1(G)
      • S(c);N_SPINR(b),OGATE::QAR2(C)
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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).