MESON Chess Problem Database

Problem Display
PID: 16699 (B7/1R5K/7N/4P3/2PqkB2/8/1N1P3Q/3b4 w - - 0 1)

Valve, Leo Erland

Helsingin Sanomat, 1942

B7/1R5K/7N/4P3/2PqkB2/8/1N1P3Q/3b4

#2

10 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Rb3#
    • 1...Qg1
      • 2.Rd7#
    • 1...Qf2
      • 2.Rd7#
    • 1...Qc3
      • 2.Rd7#
    • 1...Qe3
      • 2.Rd7#
    • 1...Qd7+
      • 2.Rxd7#
  • Keys
    • 1.Be3!
      • threat
        • 2.Qf4#
      • 1...Qd7+
        • 2.Rxd7#
      • 1...Kf3
        • 2.Rf7#
      • 1...Qxb2
        • 2.Rb3#
      • 1...Qxe3
        • 2.Rd7#
      • 1...Qxe5
        • 2.Re7#
      • 1...Qxc4
        • 2.Rb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 3
  • Sets
    • K(c);S_FLIGHT::B(J)+R(H),DCHECK
    • Q(b);N_GUARD::B(J)+R(H)
    • Q(b);CHECK,N_GUARD::B(J)+R(H),XQ(b)
  • Actual
    • B(E);
    • Threat
      • QAR1(C)
    • Vars
      • Q(b);CHECK,N_GUARD::B(J)+R(H),XQ(b)
      • K(c);S_FLIGHT::B(J)+R(H),DCHECK
      • Q(b);N_GUARD,XS(A)::B(J)+R(H)
      • Q(b);N_GUARD,XB(E)::B(J)+R(H)
      • Q(b);N_GUARD,XP(F)::B(J)+R(H)
      • Q(b);N_GUARD,XP(D)::B(J)+R(H)
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).