MESON Chess Problem Database

Problem Display
PID: 161293 (1QNb3K/4p1N1/B1pp3R/2k3B1/rn4R1/2nP1br1/8/q7 w - - 0 1)

Jorgensen, Walther Martinus Johannes

1st HM., Magasinet, 1946

1QNb3K/4p1N1/B1pp3R/2k3B1/rn4R1/2nP1br1/8/q7

#2

9 + 11

15593 170 Skakopgaver (Jorgensen) 1975

SOLUTION

  • SOUND
  • Sets
    • 1...Bd5
      • 2.d4#
    • 1...Scd5
      • 2.Rc4#
    • 1...Sbd5
      • 2.Se6#
    • 1...d5
      • 2.Se6#
      • 2.d4#
    • 1...e5
      • 2.Qxd6#
    • 1...e6
      • 2.Qxd6#
  • Tries
    • 1.Qa7+?
      • 1...Kd5
        • 2.Qd4#
      • 1...Bb6!
    • 1.Qb6+?
      • 1...Kd5
        • 2.Qd4#
      • 1...Bxb6!
  • Keys
    • 1.Rh5!
      • threat
        • 2.Be3#
      • 1...Kd5
        • 2.Bxe7#
      • 1...Bd5
        • 2.d4#
      • 1...Scd5
        • 2.Rc4#
      • 1...Sbd5
        • 2.Se6#
      • 1...e5
        • 2.Qxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • B(c);SBLOCK::P(A)
    • S(b);P_PINS(F),SBLOCK::R1(B)
    • S(f);SBLOCK::S(F)
    • P(j);N_GUARD::QAB1(G),XP(i)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • K(g);OGATE,P-FLIGHT::QAR1(G)
      • Refutation
        • B(k);P_SPINB(k)
    • Try
      • Q(G);CHECK
      • Vars
        • K(g);OGATE,P-FLIGHT::QAR1(G)
      • Refutation
        • B(k);XQ(G)
  • Actual
    • R(E);
    • Threat
      • R(E)+B(C),DCHECK
    • Vars
      • K(g);P-FLIGHT::R(E)+B(C),XP(j)
      • B(c);SBLOCK::P(A)
      • S(b);P_PINS(F),SBLOCK::R1(B)
      • S(f);SBLOCK::S(F)
      • P(j);N_GUARD::QAB1(G),XP(i)
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).