MESON Chess Problem Database

Problem Display
PID: 260979 (8/5p1B/2p3r1/2P2Rp1/2Pk2p1/K1N1N1P1/8/B5Q1 w - - 0 1)

Johner, Hans

Neue Zurcher Zeitung, 1975

8/5p1B/2p3r1/2P2Rp1/2Pk2p1/K1N1N1P1/8/B5Q1

#2

10 + 6

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Sc2+?
      • 1...Kxc4
        • 2.Qd4#
        • 2.Qf1#
      • 1...Kd3!
    • 1.Sxg4+?
      • 1...Kxc4
        • 2.Se5#
      • 1...Kd3!
    • 1.Qb1?
      • threat
        • 2.Scd1#
        • 2.Qe4#
      • 1...Re6
        • 2.Scd1#
      • 1...Kxe3!
  • Keys
    • 1.Rf6!
      • 1...Kd3
        • 2.Rd6#
      • 1...Kxc5
        • 2.Sa4#
      • 1...Ke5
        • 2.Sxg4#
      • 1...Rxf6
        • 2.Sa4#
      • 1...Rh6
        • 2.Sa4#
      • 1...Rg7
        • 2.Sa4#
      • 1...Rg8
        • 2.Sa4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • S(E);CHECK,XP(b)
      • Vars
        • K(a);P-FLIGHT,XP(G)::S(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);::B(A)+S(D)
      • Refutation
        • K(a);S_FLIGHT,XS(E)
  • Actual
    • R(I);
    • Vars
      • K(a);N_GUARD,P-FLIGHT,P_SPINR(e)::R(I)
      • K(a);N_GUARD,S_FLIGHT,XP(H)::S(D)
      • K(a);N_GUARD,S_FLIGHT::S(E),XP(b)
      • R(e);XR(I)::B(A)+S(D)
      • R(e);::B(A)+S(D)
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).