MESON Chess Problem Database

Problem Display
PID: 105422 (1N6/1r6/6RP/n1k3KQ/6RP/1P6/8/2B5 w - - 0 1)

Erokhin, Vladimir Alekseevich

Sachove umeni (Ceskoslovensky sach), 1978

1N6/1r6/6RP/n1k3KQ/6RP/1P6/8/2B5

#2

9 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Kf6+?
      • 1...Kd6
        • 2.Bf4#
        • 2.Qe5#
      • 1...Kb6!
    • 1.Sa6+?
      • 1...Kb5
        • 2.Kf4#
        • 2.Rb4#
      • 1...Kd5!
    • 1.Ba3+?
      • 1...Kb5
        • 2.Kf4#
      • 1...Kd5
        • 2.Kf6#
      • 1...Rb4!
    • 1.Rc4+?
      • 1...Kb5
        • 2.Kf4#
        • 2.Kg4#
      • 1...Kd5
        • 2.Kf4#
        • 2.Kg4#
      • 1...Sxc4!
    • 1.Rc6+?
      • 1...Kb5
        • 2.Kf6#
        • 2.Kg6#
      • 1...Kd5
        • 2.Kf6#
        • 2.Kg6#
      • 1...Sxc6!
  • Keys
    • 1.Be3+!
      • 1...Kb5
        • 2.Kf6#
      • 1...Kd5
        • 2.Kf4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(E);CHECK,S_FLIGHT
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(I);CHECK
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR(F)+K(E)
      • Refutation
        • R(c);P_SPINR(c)
    • Try
      • R(C);CHECK
      • Refutation
        • S(a);XR(C)
    • Try
      • R(G);CHECK
      • Refutation
        • S(a);XR(G)
  • Actual
    • B(A);CHECK
    • Vars
      • K(b);P-FLIGHT::QAR(F)+K(E)
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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).