MESON Chess Problem Database

Problem Display
PID: 17164 (8/7p/P2pP2P/P2k4/PB4QN/Pp5p/1p2N1rp/bK5B w - - 0 1)

Elekes, Dezso

Chemnitzer Tageblatt, 1925

8/7p/P2pP2P/P2k4/PB4QN/Pp5p/1p2N1rp/bK5B

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Qf5#
    • 1...Kc6
      • 2.Qc4#
  • Tries
    • 1.Sc3+?
      • 1...Kc6
        • 2.Qc4#
      • 1...Ke5!
    • 1.Sg3?
      • threat
        • 2.Qe4#
      • 1...Kc6
        • 2.Qc4#
      • 1...Ke5!
    • 1.Sg6?
      • 1...Kc6
        • 2.Qc4#
      • 1...hxg6!
    • 1.Bxg2+?
      • 1...Ke5
        • 2.Bc3#
        • 2.Qf5#
      • 1...hxg2!
    • 1.Be1?
      • 1...Ke5
        • 2.Qf5#
      • 1...Kc6
        • 2.Qc4#
      • 1...Kc5!
    • 1.Bd2?
      • 1...Ke5
        • 2.Qf5#
      • 1...Kc6
        • 2.Qc4#
      • 1...Kc5!
    • 1.Bc3?
      • 1...Kc6
        • 2.Qc4#
      • 1...Kc5!
    • 1.Qf3+?
      • 1...Kc4
        • 2.Qe4#
      • 1...Ke5
        • 2.Qf5#
      • 1...Kxe6!
    • 1.Qf5+?
      • 1...Kc4
        • 2.Qe4#
        • 2.Qb5#
      • 1...Kc6!
    • 1.Qc4+?
      • 1...Ke5
        • 2.Bc3#
      • 1...Kxc4!
    • 1.Qd4+?
      • 1...Kc6
        • 2.Qc4#
        • 2.Qxd6#
      • 1...Kxe6!
    • 1.Qf4?
      • 1...Kc6
        • 2.Qxd6#
        • 2.Qc4#
      • 1...Kxe6!
    • 1.a7?
      • 1...Ke5
        • 2.Qf5#
      • 1...Kc6!
    • 1.e7?
      • 1...Ke5
        • 2.Qf5#
      • 1...Kc6!
  • Keys
    • 1.Qg7!
      • 1...Kc4
        • 2.Qd4#
      • 1...Ke4
        • 2.Qd4#
      • 1...Kc6
        • 2.Qb7#
      • 1...Kxe6
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(g);N_SPINR(c),P-FLIGHT::QAR1(G)
    • K(g);S_FLIGHT::QAR2(G)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(g);S_FLIGHT::QAR2(G)
      • Refutation
        • K(g);N_SPINR(c),P-FLIGHT
    • Try
      • S(C);
      • Threat
        • QAB1(G)
      • Vars
        • K(g);S_FLIGHT::QAR2(G)
      • Refutation
        • K(g);N_SPINR(c),P-FLIGHT
    • Try
      • S(H);
      • Vars
        • K(g);S_FLIGHT::QAR2(G)
      • Refutation
        • P(i);XS(H)
    • Try
      • B(B);CHECK,XR(c)
      • Refutation
        • P(f);XB(B)
    • Try
      • B(F);
      • Vars
        • K(g);N_SPINR(c),P-FLIGHT::QAR1(G)
        • K(g);S_FLIGHT::QAR2(G)
      • Refutation
        • K(g);N_SPINR(c),P-FLIGHT
    • Try
      • B(F);
      • Vars
        • K(g);N_SPINR(c),P-FLIGHT::QAR1(G)
        • K(g);S_FLIGHT::QAR2(G)
      • Refutation
        • K(g);N_SPINR(c),P-FLIGHT
    • Try
      • B(F);
      • Vars
        • K(g);S_FLIGHT::QAR2(G)
      • Refutation
        • K(g);N_SPINR(c),P-FLIGHT
    • Try
      • Q(G);CHECK,N_PINR(c)
      • Vars
        • K(g);S_FLIGHT::QAR2(G)
        • K(g);P-FLIGHT::QAR1(G)
      • Refutation
        • K(g);S_FLIGHT,XP(K)
    • Try
      • Q(G);CHECK
      • Refutation
        • K(g);S_FLIGHT
    • Try
      • Q(G);CHECK
      • Vars
        • K(g);N_SPINR(c),P-FLIGHT::B(F)
      • Refutation
        • K(g);N_SPINR(c),S_FLIGHT,XQ(G)
    • Try
      • Q(G);CHECK
      • Refutation
        • K(g);N_SPINR(c),S_FLIGHT,XP(K)
    • Try
      • Q(G);
      • Refutation
        • K(g);N_SPINR(c),S_FLIGHT,XP(K)
    • Try
      • P(J);
      • Vars
        • K(g);N_SPINR(c),P-FLIGHT::QAR1(G)
      • Refutation
        • K(g);S_FLIGHT
    • Try
      • P(K);
      • Vars
        • K(g);N_SPINR(c),P-FLIGHT::QAR1(G)
      • Refutation
        • K(g);S_FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(g);N_SPINR(c),S_FLIGHT::QAR1(G)
      • K(g);S_FLIGHT::QAR1(G)
      • K(g);S_FLIGHT::QAB1(G)
      • K(g);N_SPINR(c),S_FLIGHT,XP(K)::S(C)
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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).