MESON Chess Problem Database

Problem Display
PID: 10426 (2K5/3NN3/3R4/2nB4/1n1kb1pB/Q1p3r1/3pR1Pb/8 w - - 0 1)

Goldschmeding, Cornelis

3rd Prize, Probleemblad 114. TT, 1964

2K5/3NN3/3R4/2nB4/1n1kb1pB/Q1p3r1/3pR1Pb/8

#2

9 + 9

3747 FIDE Album (1962-1964) 1968

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Qxb4#
    • 1...Bd3
      • 2.Bf6#
    • 1...Sbd3
      • 2.Sc6#
    • 1...Scd3
      • 2.Rxe4#
    • 1...c2
      • 2.Bf6#
  • Tries
    • 1.Bxe4+?
      • 1...Sd5
        • 2.Qb4#
        • 2.Qxc5#
      • 1...Kc4!
  • Keys
    • 1.Rxd2+!
      • 1...Ke3
        • 2.Bg5#
      • 1...Rd3
        • 2.Bf2#
      • 1...Bd3
        • 2.Sf5#
      • 1...Sbd3
        • 2.Qxc5#
      • 1...Scd3
        • 2.Qa7#
      • 1...cxd2
        • 2.Bf6#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 4
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(d);SBLOCK::QAR2(C),XS(e)
    • B(g);SBLOCK::B(D)
    • S(e);N_GUARD,SBLOCK::S(H)
    • S(i);N_GUARD,SBLOCK::R1(A),XB(g)
    • P(c);::B(D)
  • Tries
    • Try
      • B(E);CHECK,XB(g)
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • R(A);CHECK,XP(a)
    • Vars
      • K(f);P_SPINP(c),S_FLIGHT::B(D)
      • R(d);OGATE,P_SPINR(d)::B(D)
      • B(g);P_SPINB(g)::S(H)
      • S(e);OGATE,P_SPINS(e)::QAB1(C),XS(i)
      • S(i);P_SPINS(i),S_CUTB(g),S_CUTP(c),S_CUTR(d),S_CUTS(e)::QAB(C)
      • P(c);XR(A)::B(D)
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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).