MESON Chess Problem Database

Problem Display
PID: 269808 (8/2p5/8/K1p5/3k1B2/8/4Q3/3B4 w - - 0 1)

Tompuri, Ismo

Tehtavaniekka, 2020

8/2p5/8/K1p5/3k1B2/8/4Q3/3B4

#2

4 + 3

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Be5#
  • Tries
    • 1.Kb5?
      • threat
        • 2.Qc4#
      • 1...Kc3
        • 2.Be5#
        • 2.Qd2#
      • 1...Kd5
        • 2.Qc4#
        • 2.Qe5#
      • 1...c4
        • 2.Qxc4#
      • 1...c6+!
    • 1.Bb3?
      • threat
        • 2.Be5#
        • 2.Qc4#
        • 2.Qe3#
      • 1...c4
        • 2.Qxc4#
      • 1...Kc3!
    • 1.Qe3+?
      • 1...Kc4
        • 2.Bb3#
      • 1...Kd5!
  • Keys
    • 1.Bc2!
      • threat
        • 2.Qd3#
      • 1...Kc3
        • 2.Be5#
      • 1...Kd5
        • 2.Qe4#
      • 1...c4
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,S_FLIGHT::B(C)
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAR1(B)
      • Vars
        • P(b);::QAR1(B),XP(b)
      • Refutation
        • P(c);CHECK
    • Try
      • B(A);
      • Threat
        • DUALS(3)
      • Vars
        • P(b);::QAR1(B),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(a);P-FLIGHT::B(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(A);
    • Threat
      • QAR1(B)
    • Vars
      • K(a);N_GUARD,S_FLIGHT::B(C)
      • K(a);N_GUARD,P-FLIGHT::QAB1(B)
      • P(b);SBLOCK::QAB1(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).