MESON Chess Problem Database

Problem Display
PID: 262338 (8/8/8/Pp1BQ3/1k6/2N2N2/8/1K6 w - - 0 1)

Leschemelle, Matthieu

Europe Echecs, 1996

8/8/8/Pp1BQ3/1k6/2N2N2/8/1K6

#2

6 + 2

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qe7#
  • Tries
    • 1.Ka2?
      • 1...Kc5
        • 2.Qe7#
      • 1...Kxa5!
    • 1.Kb2?
      • 1...Kc5
        • 2.Qe7#
      • 1...Kxa5!
    • 1.Se1?
      • 1...Ka3
        • 2.Sc2#
      • 1...Kc5
        • 2.Sd3#
      • 1...Kxa5!
    • 1.Ba2?
      • 1...Kxa5
        • 2.Qxb5#
      • 1...Ka3!
    • 1.Be6?
      • 1...Kxa5
        • 2.Qxb5#
      • 1...Ka3!
    • 1.Bf7?
      • 1...Kxa5
        • 2.Qxb5#
      • 1...Ka3!
    • 1.Bg8?
      • 1...Kxa5
        • 2.Qxb5#
      • 1...Ka3!
    • 1.Qd4+?
      • 1...Ka3
        • 2.Sxb5#
      • 1...Kxa5!
    • 1.Qf4+?
      • 1...Ka3
        • 2.Sxb5#
      • 1...Kxc3
        • 2.Qd2#
        • 2.Qd4#
      • 1...Kc5
        • 2.Qf8#
      • 1...Kxa5!
    • 1.Qd6+?
      • 1...Kxc3
        • 2.Qa3#
      • 1...Kxa5!
    • 1.Qe4+?
      • 1...Ka3
        • 2.Sxb5#
      • 1...Kxc3
        • 2.Qd4#
      • 1...Kc5
        • 2.Qe7#
      • 1...Kxa5!
    • 1.Qe7+?
      • 1...Kxc3
        • 2.Qa3#
      • 1...Kxa5!
  • Keys
    • 1.Qe2!
      • 1...Ka3
        • 2.Qb2#
      • 1...Kxc3
        • 2.Qd2#
      • 1...Kxa5
        • 2.Qxb5#
      • 1...Kc5
        • 2.Qe7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);N_GUARD,S_FLIGHT::QAB(F)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB(F)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAB(F)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • S(C);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::S(C)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • B(E);
      • Vars
        • K(a);N_GUARD,P_SPINP(b),S_FLIGHT,XP(D)::QAR1(F),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(E);
      • Vars
        • K(a);N_GUARD,P_SPINP(b),S_FLIGHT,XP(D)::QAR1(F),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(E);
      • Vars
        • K(a);N_GUARD,P_SPINP(b),S_FLIGHT,XP(D)::QAR1(F),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(E);
      • Vars
        • K(a);N_GUARD,P_SPINP(b),S_FLIGHT,XP(D)::QAR1(F),XP(b)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::S(B),XP(b)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::S(B),XP(b)
        • K(a);N_GUARD,S_FLIGHT::QAB(F)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT,XS(B)::QAR2(F)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);N_GUARD,S_FLIGHT::S(B),XP(b)
        • K(a);N_GUARD,S_FLIGHT,XS(B)::QAB1(F)
        • K(a);N_GUARD,S_FLIGHT::QAB(F)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);OGATE,S_FLIGHT,XS(B)::QAR2(F)
      • Refutation
        • K(a);S_FLIGHT,XP(D)
  • Actual
    • Q(F);
    • Vars
      • K(a);N_GUARD,S_FLIGHT::QAB1(F)
      • K(a);OGATEB,S_FLIGHT,XS(B)::QAB1(F)
      • K(a);N_GUARD,S_FLIGHT,XP(D)::QAR1(F),XP(b)
      • K(a);N_GUARD,S_FLIGHT::QAB(F)
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).