MESON Chess Problem Database

Problem Display
PID: 38139 (1NN4B/nr1Q2Kp/1p4P1/R1bbkP2/3p4/3B2P1/q5pr/8 w - - 0 1)

Dawson, Thomas Rayner

4th Comm., BCPS 010. Ty., 1929-1930

1NN4B/nr1Q2Kp/1p4P1/R1bbkP2/3p4/3B2P1/q5pr/8

#2

10 + 11

56 The Problemist 1930
3979 Systematic Terminology 1984
15256 TRD Scrapbook 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rh6
      • 2.Kxh6#
    • 1...Rxd7+
      • 2.Sxd7#
    • 1...Be7
      • 2.Qe6#
    • 1...Bf8+
      • 2.Kxf8#
    • 1...Bf7
      • 2.Qd6#
    • 1...h5
      • 2.Kh6#
      • 2.Kh7#
    • 1...h6
      • 2.Kh7#
  • Tries
    • 1.Rxc5?
      • threat
        • 2.Kf8#
      • 1...Rxd7+
        • 2.Sxd7#
      • 1...hxg6!
    • 1.Qc7+?
      • 1...Bd6
        • 2.Sd7#
      • 1...Rxc7+!
  • Keys
    • 1.gxh7!
      • threat
        • 2.Kg6#
      • 1...Rxh7+
        • 2.Kxh7#
      • 1...Rxd7+
        • 2.Sxd7#
      • 1...Bf8+
        • 2.Kxf8#
      • 1...Rh6
        • 2.Kxh6#
      • 1...Be7
        • 2.Qe6#
      • 1...Bf7
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(c);::B(J)+K(G),XR(c)
    • R(j);CHECK,XQ(F)::S(H),XR(j)
    • B(e);N_PINQ(F),P_SPINB(f)::QAR1(F)
    • B(e);CHECK,P_SPINB(f)::B(J)+K(G),XB(e)
    • B(f);N_PINQ(F),P_SPINB(e)::QAB1(F)
    • P(k);::B(J)+K(G)
  • Tries
    • Try
      • R(C);P_PINB(f),XB(e)
      • Threat
        • B(J)+K(G)
      • Vars
        • R(j);CHECK,XQ(F)::S(H),XR(j)
      • Refutation
        • P(k);XP(E)
    • Try
      • Q(F);CHECK
      • Vars
        • B(e);P_SPINB(f)::S(H)
      • Refutation
        • R(j);CHECK,XQ(F)
  • Actual
    • P(E);XP(k)
    • Threat
      • B(J)+K(G)
    • Vars
      • R(c);CHECK,XP(E)::B(J)+K(G),XR(c)
      • R(j);CHECK,XQ(F)::S(H),XR(j)
      • B(e);CHECK,P_SPINB(f)::B(J)+K(G),XB(e)
      • R(c);::B(J)+K(G),XR(c)
      • B(e);N_PINQ(F),P_SPINB(f)::QAR1(F)
      • B(f);N_PINQ(F),P_SPINB(e)::QAB1(F)
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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).