MESON Chess Problem Database

Problem Display
PID: 11503 (r7/pBB3pP/K3b3/8/2p5/4NR2/4NPp1/7k w - - 0 1)

Kipping, Cyril Stanley

Chess, 1939

r7/pBB3pP/K3b3/8/2p5/4NR2/4NPp1/7k

#2

8 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bh3
      • 2.Rxh3#
    • 1...Bd5
      • 2.Rh3#
    • 1...Bf7
      • 2.Rh3#
    • 1...Bg8
      • 2.Rh3#
    • 1...g1Q
      • 2.Rh3#
    • 1...g1S
      • 2.Rh3#
    • 1...g1B
      • 2.Rh3#
    • 1...g1R
      • 2.Rh3#
  • Tries
    • 1.h8Q+?
      • 1...Bh3
        • 2.Rxh3#
        • 2.Qxh3#
      • 1...Rxh8!
    • 1.h8R+?
      • 1...Bh3
        • 2.Rfxh3#
        • 2.Rhxh3#
      • 1...Rxh8!
  • Keys
    • 1.Rf5!
      • threat
        • 2.Bxg2#
      • 1...Bd5
        • 2.Rh5#
      • 1...Bc8
        • 2.h8Q#
        • 2.h8R#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 7
  • Sets
    • B(d);N_GUARD::R(D),XB(d)
    • B(d);N_GUARD::R(D)
    • P(b);::B(F)+R(D),DCHECK
  • Tries
    • Try
      • P(H);CHECK
      • Refutation
        • R(g);XQ(H)
    • Try
      • P(H);CHECK
      • Refutation
        • R(g);XR(H)
  • Actual
    • R(D);P_PINP(b)
    • Threat
      • B(F),XP(b)
    • Vars
      • B(d);N_GUARD,N_SPINP(b)::R(D)
      • B(d);P_PINB(F),S_CUTR(g)::P=Q
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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).