MESON Chess Problem Database

Problem Display
PID: 138912 (3B2N1/p3pRp1/Q4bP1/1KR1N1k1/7p/5B1P/4PP2/8 w - - 0 1)

Haring, Jacobus

1st HM., KNSB-100 JT, 1973

3B2N1/p3pRp1/Q4bP1/1KR1N1k1/7p/5B1P/4PP2/8

#2

12 + 6

102 Probleemblad 1974

SOLUTION

  • SOUND
  • Sets
    • 1...Kf4
      • 2.Sd3#
    • 1...Bxe5
      • 2.Bxe7#
      • 2.Rxe5#
  • Tries
    • 1.Rxe7?
      • 1...Kf4
        • 2.Sd3#
      • 1...Bxe5
        • 2.Rf7#
      • 1...Bxe7
        • 2.Sd3#
      • 1...Kf5!
    • 1.Qa4?
      • threat
        • 2.Qg4#
      • 1...Kf5
        • 2.Qg4#
      • 1...a6+!
    • 1.Qe6?
      • threat
        • 2.Qg4#
      • 1...Kf4
        • 2.Sd3#
        • 2.Qg4#
      • 1...a6+!
  • Keys
    • 1.Sxe7!
      • 1...Kf4
        • 2.Sd3#
      • 1...Kh6
        • 2.Sg4#
      • 1...Bxe5
        • 2.Sg8#
      • 1...Bxe7
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);P_SPINB(c),S_FLIGHT::S(G)
  • Tries
    • Try
      • R(J);XP(e)
      • Vars
        • K(b);S_FLIGHT::S(G)
        • B(c);OGATEB,P_SPINB(c),XS(G)::B(K)+R(J)
        • B(c);N_GUARD,P_SPINB(c),XR(J)::R(F)+S(G)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(H);
      • Threat
        • QAR1(H)
      • Vars
        • K(b);P-FLIGHT,P_SPINB(c)::QAB1(H)
      • Refutation
        • P(d);CHECK
    • Try
      • Q(H);
      • Threat
        • QAR1(H)
      • Refutation
        • P(d);CHECK
  • Actual
    • S(L);XP(e)
    • Vars
      • K(b);P_SPINB(c),S_FLIGHT::S(G)
      • K(b);S_FLIGHT::S(G)
      • B(c);P_SPINB(c),XS(G)::B(K)+S(L)
      • B(c);N_GUARD,P_SPINB(c),XS(L)::R(F)+S(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).