MESON Chess Problem Database

Problem Display
PID: 40494 (4R3/3pB3/1K6/4kPp1/4P3/1P2NnP1/1pn2N2/1qrbR1b1 w - - 0 1)

Overkamp, Petrus

1st HM., Magasinet, 1951

4R3/3pB3/1K6/4kPp1/4P3/1P2NnP1/1pn2N2/1qrbR1b1

#2

10 + 10

3105 FIDE Album (1945-1955) 1964

SOLUTION

  • SOUND
  • Sets
    • 1...Scd4
      • 2.Seg4#
    • 1...Sfd4
      • 2.Sc4#
  • Tries
    • 1.Bxg5+?
      • 1...Kd6
        • 2.Sc4#
      • 1...Kd4!
    • 1.Bf6+?
      • 1...Kd6
        • 2.Sc4#
      • 1...Kxf6!
    • 1.Bd8+?
      • 1...Kd6
        • 2.Sc4#
        • 2.Bc7#
      • 1...Kd4!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Bc5#
      • 1...Kd4
        • 2.Bc5#
      • 1...Scd4
        • 2.Sg4#
      • 1...Sfd4
        • 2.Sd3#
      • 1...d6
        • 2.Bf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(f);SBLOCK::S(D)
    • S(g);SBLOCK::S(D)
  • Tries
    • Try
      • B(I);CHECK,XP(i)
      • Vars
        • K(h);S_FLIGHT::S(D)
      • Refutation
        • K(h);S_FLIGHT
    • Try
      • B(I);CHECK
      • Vars
        • K(h);S_FLIGHT::S(D)
      • Refutation
        • K(h);S_FLIGHT,XB(I)
    • Try
      • B(I);CHECK
      • Refutation
        • K(h);S_FLIGHT
  • Actual
    • S(D);P_SPINS(B)
    • Threat
      • R(J)+B(I)
    • Vars
      • K(h);N_PINS(B),S_FLIGHT::B(I)
      • S(f);N_PINS(B),SBLOCK::S(B)
      • S(g);N_PINS(B),SBLOCK::S(B)
      • P(j);SBLOCK::R(J)+B(I),DCHECK
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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).