MESON Chess Problem Database

Problem Display
PID: 32522 (4K3/2N2p2/2R5/1p2N2p/1pbkq1Rr/1pr4p/1QBPp2B/8 w - - 0 1)

Berghmans, Josef

De Problemist, 1929

4K3/2N2p2/2R5/1p2N2p/1pbkq1Rr/1pr4p/1QBPp2B/8

#2

9 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qf4
      • 2.Sf3#
    • 1...Bd5
      • 2.Sxb5#
    • 1...Be6
      • 2.Sf3#
  • Tries
    • 1.Sxb5+?
      • 1...Kd5
        • 2.Bxe4#
      • 1...Bxb5!
    • 1.Rd6+?
      • 1...Bd5
        • 2.Rxd5#
      • 1...Kc5!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qa7#
      • 1...Qf4
        • 2.Sf3#
      • 1...Bd3
        • 2.Qg1#
      • 1...Bd5
        • 2.Sxb5#
      • 1...Be6
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • Q(h);N_PINS(F)::S(F)
    • B(f);N_GUARD,SBLOCK::S(H),XP(j)
    • B(f);N_PINS(F)::S(F)
  • Tries
    • Try
      • S(H);CHECK,XP(j)
      • Vars
        • K(g);N_SPINQ(h),N_SPINR(c),P-FLIGHT::B(B),XQ(h)
      • Refutation
        • B(f);P_PINR(G),XS(H)
    • Try
      • R(G);CHECK
      • Vars
        • B(f);N_GUARD,P_SPINB(f)::R1(G),XB(f)
      • Refutation
        • K(g);N_SPINQ(h),N_SPINR(c),S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • Q(h);N_PINS(F)::S(F)
      • B(f);::QAB(A)
      • B(f);N_GUARD,SBLOCK::S(H),XP(j)
      • B(f);N_PINS(F)::S(F)
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).