MESON Chess Problem Database

Problem Display
PID: 16326 (4N3/7p/R2N2kp/p6p/r4p1K/5Q2/q3b1P1/2r3R1 w - - 0 1)

Davis, Edward

Kipping, Cyril Stanley

Chess, 1940

4N3/7p/R2N2kp/p6p/r4p1K/5Q2/q3b1P1/2r3R1

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.Qe4#
    • 1...Re4
      • 2.Qxe4#
    • 1...Bf1
      • 2.Qxh5#
    • 1...Bd3
      • 2.Qxh5#
    • 1...Bc4
      • 2.Qe4#
      • 2.Qxh5#
    • 1...Bb5
      • 2.Qxh5#
    • 1...Bxa6
      • 2.Qxh5#
  • Tries
    • 1.Sc4+?
      • 1...Kf5
        • 2.Sg7#
        • 2.Rf6#
        • 2.Qd5#
      • 1...Kf7!
    • 1.Qd3+?
      • 1...Re4
        • 2.Qxe4#
      • 1...Bxd3!
  • Keys
    • 1.g4!
      • threat
        • 2.gxh5#
      • 1...fxg4 ep+
        • 2.Sc4#
      • 1...hxg4
        • 2.Rxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(d);N_GUARD::QAB(C)
    • R(d);N_GUARD::QAB(C),XR(d)
    • B(c);N_GUARD::QAB1(C),XP(g)
    • B(c);N_GUARD,XR(E)::QAB1(C),XP(g)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • K(h);P_SPINP(e),S_FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • R(d);N_GUARD,P_SPINR(d)::QAB(C),XR(d)
      • Refutation
        • B(c);XQ(C)
  • Actual
    • P(B);
    • Threat
      • R(A)+P(B)DCHECK,XP(g)
    • Vars
      • P(e);CHECK,EP,P_SPINP(e),XP(B)::R(E)+S(F)
      • P(g);OGATE,P_SPINP(g),XP(B)::R(A),XP(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).