MESON Chess Problem Database

Problem Display
PID: 158190 (8/5Q2/1PPp4/1k1N1p2/1P2pP2/4K3/3p4/N2B4 w - - 0 1)

Back, Par-Erik

Skakbladet, 1963

8/5Q2/1PPp4/1k1N1p2/1P2pP2/4K3/3p4/N2B4

#2

9 + 5

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Be2#
    • 1...Ka6
      • 2.Be2#
    • 1...Kxc6
      • 2.Ba4#
  • Tries
    • 1.Kd4?
      • 1...Ka6
        • 2.Be2#
      • 1...Kxc6
        • 2.Ba4#
      • 1...e3!
    • 1.Sc3+?
      • 1...Ka6
        • 2.Qa7#
        • 2.Qb7#
      • 1...Kxb6
        • 2.Qb7#
      • 1...Kxc6
        • 2.Qc7#
      • 1...Kxb4!
    • 1.Be2+?
      • 1...Ka4
        • 2.Qa7#
      • 1...Kxc6!
    • 1.Qe6?
      • 1...Kc4
        • 2.Be2#
      • 1...Ka6
        • 2.Be2#
      • 1...Kxc6!
    • 1.Qe8?
      • 1...Ka6
        • 2.Be2#
      • 1...Kc4!
    • 1.Qg8?
      • 1...Kc4
        • 2.Be2#
      • 1...Ka6
        • 2.Be2#
      • 1...Kxc6!
    • 1.Qxf5?
      • 1...Kc4
        • 2.Be2#
      • 1...Ka6
        • 2.Be2#
      • 1...Kxc6!
    • 1.Qc7?
      • 1...Ka6
        • 2.Be2#
      • 1...Kc4!
    • 1.Qd7?
      • 1...Ka6
        • 2.Be2#
      • 1...Kc4!
    • 1.b7?
      • 1...Kc4
        • 2.Be2#
      • 1...Kxc6
        • 2.Ba4#
      • 1...Ka6!
  • Keys
    • 1.Sc2!
      • 1...Ka4
        • 2.Sc3#
      • 1...Kc4
        • 2.Sa3#
      • 1...Ka6
        • 2.Be2#
      • 1...Kxc6
        • 2.Sd4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::B(B)
    • K(c);S_FLIGHT,XP(H)::B(B)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(c);S_FLIGHT::B(B)
        • K(c);S_FLIGHT,XP(H)::B(B)
      • Refutation
        • P(b);
    • Try
      • S(F);CHECK
      • Vars
        • K(c);P-FLIGHT,XP(G)::QAR1(I)
        • K(c);S_FLIGHT,XP(H)::QAR1(I)
      • Refutation
        • K(c);P-FLIGHT,XP(D)
    • Try
      • B(B);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR(I)
      • Refutation
        • K(c);S_FLIGHT,XP(H)
    • Try
      • Q(I);
      • Vars
        • K(c);S_FLIGHT::B(B)
      • Refutation
        • K(c);P_SPINP(e),S_FLIGHT,XP(H)
    • Try
      • Q(I);
      • Vars
        • K(c);S_FLIGHT::B(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(I);
      • Vars
        • K(c);S_FLIGHT::B(B)
      • Refutation
        • K(c);S_FLIGHT,XP(H)
    • Try
      • Q(I);XP(d)
      • Vars
        • K(c);S_FLIGHT::B(B)
      • Refutation
        • K(c);S_FLIGHT,XP(H)
    • Try
      • Q(I);
      • Vars
        • K(c);S_FLIGHT::B(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(I);
      • Vars
        • K(c);S_FLIGHT::B(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(G);
      • Vars
        • K(c);S_FLIGHT::B(B)
        • K(c);S_FLIGHT,XP(H)::B(B)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • S(A);
    • Vars
      • K(c);S_FLIGHT::S(F)
      • K(c);S_FLIGHT::S(A)
      • K(c);S_FLIGHT::B(B)
      • K(c);S_FLIGHT,XP(H)::S(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).