MESON Chess Problem Database

Problem Display
PID: 257592 (2K5/8/p4p2/N2k1B2/7N/B2p4/3P4/QR6 w - - 0 1)

Doukhan, Gerard

Troll, 2021

(First published on Wed Dec 23 2020)

2K5/8/p4p2/N2k1B2/7N/B2p4/3P4/QR6

#2

8 + 4

SOLUTION

  • SOUND
  • Tries
    • 1.Sc4?
      • 1...Kxc4
        • 2.Be6#
      • 1...Kc6
        • 2.Be4#
      • 1...a5!
    • 1.Sc6?
      • 1...Kc4
        • 2.Be6#
        • 2.Qd4#
        • 2.Qa2#
      • 1...Kxc6
        • 2.Be4#
      • 1...a5!
    • 1.Sb7?
      • 1...Kc4
        • 2.Be6#
      • 1...Kc6
        • 2.Be4#
      • 1...a5!
    • 1.Bxd3?
      • 1...Ke6
        • 2.Bc4#
      • 1...f5!
    • 1.Be6+?
      • 1...Ke4
        • 2.Rb4#
      • 1...Kxe6!
    • 1.Bh7?
      • 1...Ke6
        • 2.Bg8#
      • 1...f5!
    • 1.Rb2?
      • 1...Kd4
        • 2.Rb5#
      • 1...Ke5!
    • 1.Qa2+?
      • 1...Kd4
        • 2.Sf3#
        • 2.Sc6#
      • 1...Ke5!
  • Keys
    • 1.Rb4!
      • threat
        • 2.Qd4#
      • 1...Kc5
        • 2.Qd4#
      • 1...Kd6
        • 2.Rb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Vars
        • K(b);N_GUARD,S_FLIGHT,XS(F)::B(G)
        • K(b);N_GUARD,S_FLIGHT::B(G)
      • Refutation
        • P(c);
    • Try
      • S(F);
      • Vars
        • K(b);N_GUARD,S_FLIGHT,XS(F)::B(G)
      • Refutation
        • P(c);
    • Try
      • S(F);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::B(G)
      • Refutation
        • P(c);
    • Try
      • B(G);XP(a)
      • Vars
        • K(b);N_GUARD,S_FLIGHT::B(G)
      • Refutation
        • P(d);
    • Try
      • B(G);CHECK
      • Vars
        • K(b);N_GUARD,S_FLIGHT::R(B)
      • Refutation
        • K(b);S_FLIGHT,XB(G)
    • Try
      • B(G);
      • Vars
        • K(b);N_GUARD,S_FLIGHT::B(G)
      • Refutation
        • P(d);
    • Try
      • R(B);
      • Vars
        • K(b);P-FLIGHT,S_CUTP(c)::QAB(A)+R(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • R(B);
    • Threat
      • QAR1(A)
    • Vars
      • K(b);P-FLIGHT::QAB1(A)
      • K(b);P-FLIGHT,S_CUTP(c)::B(D)+R(B)
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).