MESON Chess Problem Database

Problem Display
PID: 136153 (8/8/p5Np/p2p3P/B2P2P1/2Bkp3/1P1nR1P1/N2R2K1 w - - 0 1)

Benedek, Attila

1st Prize, Qualification competition, 1960

8/8/p5Np/p2p3P/B2P2P1/2Bkp3/1P1nR1P1/N2R2K1

#2

12 + 7

14674 Attila Benedek - That's All 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe2
      • 2.Sf4#
    • 1...Kc4
      • 2.Se5#
    • 1...Ke4
      • 2.Bc2#
  • Tries
    • 1.Kh1?
      • 1...Kc4
        • 2.Se5#
      • 1...Ke4
        • 2.Bc2#
      • 1...Kxe2!
    • 1.Kh2?
      • 1...Kc4
        • 2.Se5#
      • 1...Ke4
        • 2.Bc2#
      • 1...Kxe2!
    • 1.Sc2?
      • 1...Kc4
        • 2.Se5#
      • 1...Ke4
        • 2.Rxe3#
      • 1...Kxe2!
    • 1.Bc2+?
      • 1...Kxe2
        • 2.Sf4#
      • 1...Kc4!
    • 1.Bb3?
      • 1...Kxe2
        • 2.Sf4#
      • 1...Ke4
        • 2.Bc2#
      • 1...a4!
    • 1.Rdxd2+?
      • 1...Kc4
        • 2.Se5#
      • 1...Ke4
        • 2.Bc2#
      • 1...exd2!
    • 1.Ree1?
      • 1...Kc4
        • 2.Se5#
      • 1...Ke4
        • 2.Bc2#
      • 1...e2!
    • 1.Rexd2+?
      • 1...Kc4
        • 2.Se5#
      • 1...Ke4
        • 2.Bc2#
      • 1...exd2!
    • 1.Rxe3+?
      • 1...Kc4
        • 2.Se5#
      • 1...Kxe3!
    • 1.g5?
      • 1...Kxe2
        • 2.Sf4#
      • 1...Kc4
        • 2.Se5#
      • 1...Ke4
        • 2.Bc2#
      • 1...hxg5!
  • Keys
    • 1.Sb3!
      • 1...Kc2
        • 2.Sc5#
      • 1...Kxe2
        • 2.Sc1#
      • 1...Kc4
        • 2.Se5#
      • 1...Ke4
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINS(a),S_FLIGHT,XR(E)::S(L)
    • K(b);N_SPINS(a),S_FLIGHT::S(L)
    • K(b);N_SPINS(a),P_SPINP(c),S_FLIGHT::B(H)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT::S(L)
        • K(b);N_SPINS(a),P_SPINP(c),S_FLIGHT::B(H)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT,XR(E)
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT::S(L)
        • K(b);N_SPINS(a),P_SPINP(c),S_FLIGHT::B(H)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT,XR(E)
    • Try
      • S(A);
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT::S(L)
        • K(b);N_SPINS(a),P_SPINP(c),S_FLIGHT::R1(E),XP(c)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT,XR(E)
    • Try
      • B(H);CHECK
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT,XR(E)::S(L)
      • Refutation
        • K(b);N_SPINS(a),S_FLIGHT
    • Try
      • B(H);
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT,XR(E)::S(L)
        • K(b);N_SPINS(a),P_SPINP(c),S_FLIGHT::B(H)
      • Refutation
        • P(d);
    • Try
      • R(B);CHECK,XS(a)
      • Vars
        • K(b);S_FLIGHT::S(L)
        • K(b);P_SPINP(c),S_FLIGHT::B(H)
      • Refutation
        • P(c);XR(B)
    • Try
      • R(E);
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT::S(L)
        • K(b);N_SPINS(a),P_SPINP(c),S_FLIGHT::B(H)
      • Refutation
        • P(c);
    • Try
      • R(E);CHECK,XS(a)
      • Vars
        • K(b);S_FLIGHT::S(L)
        • K(b);S_FLIGHT::B(H)
      • Refutation
        • P(c);P_SPINP(c),XR(E)
    • Try
      • R(E);CHECK,XP(c)
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT::S(L)
      • Refutation
        • K(b);N_SPINS(a),P-FLIGHT,XR(E)
    • Try
      • P(J);
      • Vars
        • K(b);N_SPINS(a),S_FLIGHT,XR(E)::S(L)
        • K(b);N_SPINS(a),S_FLIGHT::S(L)
        • K(b);N_SPINS(a),P_SPINP(c),S_FLIGHT::B(H)
      • Refutation
        • P(g);XP(J)
  • Actual
    • S(A);
    • Vars
      • K(b);S_FLIGHT::B(H)+S(A)
      • K(b);N_SPINS(a),S_FLIGHT,XR(E)::S(A)
      • K(b);N_SPINS(a),S_FLIGHT::S(L)
      • K(b);N_SPINS(a),P_SPINP(c),S_FLIGHT::S(A)
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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).