MESON Chess Problem Database

Problem Display
PID: 17744 (1B2R3/2q1b3/Q3N3/1Rp1k1P1/5p1P/4p3/BnKN4/8 w - - 0 1)

Buchwald, Julius

Hassberg, Eric Manfred

4th HM., Die Schwalbe, 1949

1B2R3/2q1b3/Q3N3/1Rp1k1P1/5p1P/4p3/BnKN4/8

#2

10 + 7

102 Probleemblad 1977

SOLUTION

  • SOUND
  • Sets
    • 1...Qd6
      • 2.Rxc5#
    • 1...Bf6
      • 2.Rxc5#
    • 1...Bd8
      • 2.Rxc5#
  • Tries
    • 1.Sxc7?
      • threat
        • 2.Qf6#
      • 1...Kd4
        • 2.Se6#
      • 1...Kf5
        • 2.Qe6#
      • 1...exd2!
    • 1.Bxc7+?
      • 1...Bd6
        • 2.Rxc5#
      • 1...Kf5!
  • Keys
    • 1.Sxc5!
      • threat
        • 2.Qf6#
      • 1...Kd4
        • 2.Sf3#
      • 1...Kf5
        • 2.Qe6#
      • 1...Sc4
        • 2.Scb3#
      • 1...Qd6
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • Q(f);S_CUTB(g)::R(E),XP(d)
    • B(g);N_GUARD::R(E),XP(d)
  • Tries
    • Try
      • S(H);P_PINB(g),XQ(f)
      • Threat
        • QAB1(G)
      • Vars
        • K(e);N_SPINB(g),N_SPINP(d),S_FLIGHT::S(H)
        • K(e);N_SPINB(g),P-FLIGHT::QAB1(G)
      • Refutation
        • P(b);XS(C)
    • Try
      • B(I);CHECK,XQ(f)
      • Vars
        • B(g);P_SPINB(g)::R(E),XP(d)
      • Refutation
        • K(e);P-FLIGHT
  • Actual
    • S(H);P_PINB(g),P_SPINS(H),XP(d)
    • Threat
      • QAB1(G)
    • Vars
      • K(e);N_SPINB(g),N_SPINQ(f),S_FLIGHT::S(C)
      • K(e);N_SPINB(g),N_SPINQ(f),P-FLIGHT::QAB1(G)
      • S(a);N_PINS(H)::R(E)+S(H)
      • Q(f);N_PINS(H)::R(E)+S(H)
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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).