MESON Chess Problem Database

Problem Display
PID: 37985 (K1B4b/p2RPp2/6r1/1RBN1kpP/r2p1P2/8/4Q1pq/8 w - - 0 1)

Arnstam, Knut Anders Olof

3rd Prize, Suomen Shakki, 1946

K1B4b/p2RPp2/6r1/1RBN1kpP/r2p1P2/8/4Q1pq/8

#2

10 + 10

3105 FIDE Album (1945-1955) 1964

SOLUTION

  • SOUND
  • Sets
    • 1...Ra6
      • 2.Rd6#
    • 1...Rb6
      • 2.Rd6#
    • 1...Rd6
      • 2.Rxd6#
    • 1...Rg7
      • 2.Rd6#
      • 2.Rxa7#
      • 2.Rdb7#
      • 2.Rc7#
      • 2.Rd8#
    • 1...Rg8
      • 2.Rd8#
    • 1...Bf6
      • 2.Rd6#
      • 2.Rxa7#
      • 2.Rdb7#
      • 2.Rc7#
      • 2.Rd8#
    • 1...f6
      • 2.Rd6#
      • 2.Rxa7#
      • 2.Rdb7#
      • 2.Rc7#
      • 2.Rd8#
  • Tries
    • 1.Qd3+?
      • 1...Ke6
        • 2.Rd6#
        • 2.Rd8#
        • 2.e8Q#
        • 2.e8R#
      • 1...Kg4!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Qe5#
      • 1...Kxf4
        • 2.Bd6#
      • 1...Kxf6
        • 2.Qe5#
      • 1...Qxf4
        • 2.Rd6#
      • 1...Rxf6
        • 2.Bd6#
      • 1...Bxf6
        • 2.Rxd4#
      • 1...gxf4
        • 2.Bxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 4
  • Sets
    • R(g);N_GUARD::B(J)+R(G)
    • R(g);N_GUARD::B(J)+R(G),XR(g)
    • R(g);N_GUARD,P_PINB(J)::B(J)+R(G)
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • K(e);S_FLIGHT
  • Actual
    • S(E);
    • Threat
      • QAR1(A)
    • Vars
      • K(e);P-FLIGHT,XP(B)::B(D)
      • K(e);P-FLIGHT,XS(E)::QAB1(A)
      • Q(b);SBLOCK,XP(B)::B(J)+R(G)
      • R(g);SBLOCK,XS(E)::R(C)+B(D)
      • B(j);SBLOCK,XS(E)::B(J)+R(G),XP(d)
      • P(f);SBLOCK,XP(B)::R(C)+B(D),XP(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).