MESON Chess Problem Database

Problem Display
PID: 229082 (1Nb4n/1pP3NQ/1K1R2pr/4k3/2pR1pr1/2B3p1/8/8 w - - 0 1)

van Dijk, Johannes

Algemeen Handelsblad, 1926

1Nb4n/1pP3NQ/1K1R2pr/4k3/2pR1pr1/2B3p1/8/8

#2

8 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.Rxe6#
    • 1...Bd7
      • 2.Sxd7#
    • 1...g5
      • 2.Rd1#
      • 2.Rd2#
      • 2.Rd3#
      • 2.Rd5#
      • 2.Qe4#
  • Tries
    • 1.Kc5?
      • threat
        • 2.Rxc4#
      • 1...f3
        • 2.Rxg4#
      • 1...b6+!
    • 1.Rd8?
      • threat
        • 2.Rxc4#
      • 1...g5+
        • 2.R4d6#
      • 1...Bd7
        • 2.Sxd7#
      • 1...f3
        • 2.Rxg4#
      • 1...Kf6!
    • 1.Qg8?
      • threat
        • 2.Qd5#
      • 1...Be6
        • 2.Rxe6#
        • 2.Qxe6#
      • 1...Sf7!
  • Keys
    • 1.Rd7!
      • threat
        • 2.Rxc4#
      • 1...g5+
        • 2.R4d6#
      • 1...Kf6
        • 2.R4d5#
      • 1...Bxd7
        • 2.Sxd7#
      • 1...f3
        • 2.Rxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(i);N_GUARD::R1(D),XB(i)
    • B(i);N_GUARD::S(H),XB(i)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • B(A)+R(B),XP(b)
      • Vars
        • P(c);OGATE::B(A)+R(B),XR(d)
      • Refutation
        • P(h);CHECK
    • Try
      • R(D);
      • Threat
        • B(A)+R(B),XP(b)
      • Vars
        • P(f);CHECK::B(A)+R(B)
        • B(i);N_GUARD::S(H),XB(i)
        • P(c);OGATE::B(A)+R(B),XR(d)
      • Refutation
        • K(e);S_FLIGHT
    • Try
      • Q(G);
      • Threat
        • QAR1(G)
      • Refutation
        • S(j);
  • Actual
    • R(D);
    • Threat
      • B(A)+R(B),XP(b)
    • Vars
      • P(f);CHECK::B(A)+R(B)
      • K(e);S_FLIGHT::B(A)+R(B)
      • B(i);XR(D)::S(H),XB(i)
      • P(c);OGATE::B(A)+R(B),XR(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).