MESON Chess Problem Database

Problem Display
PID: 169045 (1B2N3/8/1pP1P3/pkp5/RpR5/8/1K1N4/3Q4 w - - 0 1)

Agapov, Igor Alexeyevich

Comm., Liylu-75 JT (SuperProblem), 2016

1B2N3/8/1pP1P3/pkp5/RpR5/8/1K1N4/3Q4

#2

9 + 5

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ka6
      • 2.Sc7#
  • Tries
    • 1.Kb3?
      • 1...Ka6
        • 2.Sc7#
      • 1...Kxc6!
    • 1.Sb1?
      • 1...Kxc4
        • 2.Sa3#
        • 2.Sd6#
      • 1...Ka6
        • 2.Sc7#
      • 1...Kxc6
        • 2.Qd7#
      • 1...b3!
    • 1.Sf1?
      • 1...Kxc4
        • 2.Sd6#
      • 1...Ka6
        • 2.Sc7#
      • 1...Kxc6
        • 2.Qd7#
      • 1...b3!
    • 1.Sf3?
      • 1...Kxc4
        • 2.Sd6#
      • 1...Ka6
        • 2.Sc7#
      • 1...Kxc6
        • 2.Qd7#
      • 1...b3!
    • 1.Se4?
      • 1...Kxc4
        • 2.S4d6#
        • 2.S8d6#
      • 1...Ka6
        • 2.Sc7#
      • 1...Kxc6
        • 2.Qd7#
      • 1...b3!
    • 1.Sd6+?
      • 1...Kxc6
        • 2.Qf3#
        • 2.Qh1#
      • 1...Ka6!
    • 1.Raxb4+?
      • 1...Ka6
        • 2.Sc7#
      • 1...Kxc6
        • 2.Qf3#
        • 2.Qh1#
      • 1...cxb4
        • 2.Sc7#
      • 1...axb4!
    • 1.Qb3?
      • 1...Ka6
        • 2.Sc7#
      • 1...Kxc6!
    • 1.Qf3?
      • 1...Ka6
        • 2.Sc7#
      • 1...b3
        • 2.Sc7#
      • 1...Kxa4!
    • 1.Qh1?
      • 1...Ka6
        • 2.Sc7#
      • 1...b3
        • 2.Sc7#
      • 1...Kxa4!
  • Keys
    • 1.Sb3!
      • 1...Kxa4
        • 2.Sd4#
      • 1...Kxc4
        • 2.Sd6#
      • 1...Ka6
        • 2.Sc7#
      • 1...Kxc6
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);P_SPINP(b),S_FLIGHT::S(I)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT::S(I)
      • Refutation
        • K(c);P_SPINP(d),S_FLIGHT,XP(F)
    • Try
      • S(C);
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT::S(I)
        • K(c);OGATEB,P_SPINP(d),S_FLIGHT,XP(F)::QAB1(A)
      • Refutation
        • P(a);
    • Try
      • S(C);
      • Vars
        • K(c);P_SPINP(a),S_FLIGHT,XR(E)::S(I)
        • K(c);P_SPINP(b),S_FLIGHT::S(I)
        • K(c);OGATEB,P_SPINP(d),S_FLIGHT,XP(F)::QAB1(A)
      • Refutation
        • P(a);
    • Try
      • S(C);
      • Vars
        • K(c);P_SPINP(a),S_FLIGHT,XR(E)::S(I)
        • K(c);P_SPINP(b),S_FLIGHT::S(I)
        • K(c);OGATEB,P_SPINP(d),S_FLIGHT,XP(F)::QAB1(A)
      • Refutation
        • P(a);
    • Try
      • S(C);
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT::S(I)
        • K(c);OGATEB,P_SPINP(d),S_FLIGHT,XP(F)::QAB1(A)
      • Refutation
        • P(a);
    • Try
      • S(I);CHECK
      • Refutation
        • K(c);P_SPINP(b),S_FLIGHT
    • Try
      • R(D);CHECK,XP(a)
      • Vars
        • K(c);S_FLIGHT::S(I)
        • P(d);XR(D)::S(I)
      • Refutation
        • P(b);XR(D)
    • Try
      • Q(A);P_PINP(a)
      • Vars
        • K(c);N_SPINP(a),P_SPINP(b),S_FLIGHT::S(I)
      • Refutation
        • K(c);N_SPINP(a),P_SPINP(d),S_FLIGHT,XP(F)
    • Try
      • Q(A);
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT::S(I)
        • P(a);::S(I)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT,XR(D)
    • Try
      • Q(A);
      • Vars
        • K(c);P_SPINP(b),S_FLIGHT::S(I)
        • P(a);::S(I)
      • Refutation
        • K(c);P_SPINP(a),S_FLIGHT,XR(D)
  • Actual
    • S(C);
    • Vars
      • K(c);P_SPINP(a),S_FLIGHT,XR(D)::QAB(A)+S(C)
      • K(c);P_SPINP(a),S_FLIGHT,XR(E)::S(I)
      • K(c);P_SPINP(b),S_FLIGHT::S(I)
      • K(c);OGATEB,P_SPINP(d),S_FLIGHT,XP(F)::QAB1(A)
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).