MESON Chess Problem Database

Problem Display
PID: 16645 (n1N1R3/8/1Bpp4/2pkp3/KQ1r4/5P2/2NRrp2/8 w - - 0 1)

Bonavia-Hunt, Rev Noel Aubrey

Chess, 1942

n1N1R3/8/1Bpp4/2pkp3/KQ1r4/5P2/2NRrp2/8

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rexd2
      • 2.Se3#
    • 1...Re3
      • 2.Sxe3#
    • 1...Rd3
      • 2.Rxd3#
    • 1...Sxb6+
      • 2.Sxb6#
    • 1...c4
      • 2.Qxd6#
  • Tries
    • 1.Rxd4+?
      • 1...cxd4
        • 2.Qb3#
      • 1...exd4!
  • Keys
    • 1.Kb3!
      • threat
        • 2.Qc4#
      • 1...Re3+
        • 2.Sxe3#
      • 1...Rd3+
        • 2.Rxd3#
      • 1...c4+
        • 2.Qxc4#
      • 1...Rexd2
        • 2.Se3#
      • 1...Sxb6
        • 2.Sxb6#
      • 1...cxb4
        • 2.Sxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(a);N_GUARD,N_SPINR(c),XR(B)::S(A)
    • R(a);N_GUARD::S(A),XR(a)
    • R(c);N_PINQ(E),OGATEB::R(B),XR(c)
    • S(i);CHECK,XB(F)::S(G),XS(i)
    • P(d);N_PINQ(E),SBLOCK::QAR1(E),XP(h)
  • Tries
    • Try
      • R(B);CHECK,N_SPINQ(E),XR(c)
      • Vars
        • P(d);XR(B)::QAB(E)
      • Refutation
        • P(f);XR(B)
  • Actual
    • K(D);N_SPINQ(E),S_FLIGHT
    • Threat
      • QAB1(E)
    • Vars
      • R(a);CHECK,N_GUARD::S(A),XR(a)
      • R(c);CHECK,OGATEB::R(B),XR(c)
      • P(d);CHECK::QAB1(E),XP(d)
      • R(a);N_GUARD,N_SPINR(c),XR(B)::S(A)
      • S(i);XB(F)::S(G),XS(i)
      • P(d);XQ(E)::S(A),XP(d)
HTML5 logo

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).