MESON Chess Problem Database

Problem Display
PID: 17353 (6q1/B1p1R3/2B1NR2/3nN3/1Q1P2P1/1K1Pk3/1P2pb2/4r1n1 w - - 0 1)

Hassberg, Eric Manfred

1st Prize=, Christian Science Monitor (Cross Check), 1946

6q1/B1p1R3/2B1NR2/3nN3/1Q1P2P1/1K1Pk3/1P2pb2/4r1n1

#2

12 + 8

14773 The Best American Chess Problems of 1946 1948
3105 FIDE Album (1945-1955) 1964

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3
      • 2.Rxf3#
    • 1...Sh3
      • 2.Rf3#
    • 1...Sf4
      • 2.d5#
    • 1...Sxf6
      • 2.d5#
    • 1...Sxe7
      • 2.d5#
  • Keys
    • 1.Sf4!
      • threat
        • 2.Sg2#
      • 1...Sc3+
        • 2.Sc4#
      • 1...Sxb4+
        • 2.Sc4#
      • 1...Sxf4+
        • 2.d5#
      • 1...Sb6+
        • 2.Sf7#
      • 1...Sxf6+
        • 2.d5#
      • 1...Sxe7+
        • 2.d5#
      • 1...Qxg4
        • 2.Sxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(b);N_GUARD::R1(J),XS(b)
    • S(b);N_GUARD::R1(J)
    • S(f);OGATE,P_PINS(I)::B(K)+P(E)
    • S(f);OGATE,P_PINS(I),XR(J)::B(K)+P(E)
    • S(f);OGATE,P_PINS(I),XR(L)::B(K)+P(E)
  • Actual
    • S(I);
    • Threat
      • S(I)
    • Vars
      • S(f);CHECK::R(L)+S(G),DCHECK
      • S(f);CHECK,XQ(D)::R(L)+S(G),DCHECK
      • S(f);CHECK,OGATE,XS(I)::B(K)+P(E)
      • S(f);CHECK,N_GUARD::R(L)+S(G)
      • S(f);CHECK,OGATE,XR(J)::B(K)+P(E)
      • S(f);CHECK,OGATE,XR(L)::B(K)+P(E)
      • Q(h);N_GUARD,XP(F)::S(I),XS(f)
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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).