MESON Chess Problem Database

Problem Display
PID: 201672 (8/2pNQ1p1/2Bp2Kp/3Pp2P/1p1k4/1P6/3B4/4N3 w - - 0 1)

Elekes, Dezso

Bekes Sakk, 1922

8/2pNQ1p1/2Bp2Kp/3Pp2P/1p1k4/1P6/3B4/4N3

#2

9 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qh4#
    • 1...e4
      • 2.Qxg7#
  • Tries
    • 1.Kxg7?
      • 1...e4
        • 2.Qf6#
      • 1...Ke4!
    • 1.Sb8?
      • 1...Ke4
        • 2.Qh4#
      • 1...Kc5
        • 2.Be3#
      • 1...e4!
    • 1.Sf8?
      • 1...Ke4
        • 2.Qh4#
      • 1...Kc5
        • 2.Be3#
      • 1...e4!
    • 1.Bc1?
      • 1...Ke4
        • 2.Qh4#
      • 1...e4
        • 2.Qxg7#
      • 1...Kc3!
    • 1.Qg5?
      • threat
        • 2.Qe3#
      • 1...Ke4
        • 2.Qe3#
        • 2.Qh4#
        • 2.Qg4#
      • 1...hxg5!
    • 1.Qxd6?
      • threat
        • 2.Qxb4#
        • 2.Qxe5#
      • 1...Ke4
        • 2.Qxb4#
        • 2.Qxe5#
      • 1...e4
        • 2.Qxb4#
        • 2.Qc5#
        • 2.Qe5#
      • 1...cxd6!
    • 1.Qf6?
      • 1...Ke4
        • 2.Qh4#
      • 1...gxf6!
    • 1.Qd8?
      • 1...Ke4
        • 2.Qh4#
      • 1...e4!
    • 1.Qf8?
      • 1...e4
        • 2.Qxg7#
      • 1...Ke4!
    • 1.Qe6?
      • 1...Ke4
        • 2.Qg4#
      • 1...e4!
    • 1.Qf7?
      • 1...e4
        • 2.Qxg7#
      • 1...Ke4!
  • Keys
    • 1.Sxe5!
      • 1...Ke4
        • 2.S5f3#
      • 1...Kc5
        • 2.Be3#
      • 1...dxe5
        • 2.Qxb4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(b);P-FLIGHT,P_SPINP(c)::QAR(I)
    • P(c);OGATEB,SBLOCK::QAB(I),XP(g)
  • Tries
    • Try
      • K(G);P-FLIGHT,XP(g)
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(I)
      • Refutation
        • K(b);P-FLIGHT,P_SPINP(c)
    • Try
      • S(H);
      • Vars
        • K(b);P-FLIGHT,P_SPINP(c)::QAR(I)
        • K(b);P_SPINP(d),S_FLIGHT::B(B)
      • Refutation
        • P(c);
    • Try
      • S(H);
      • Vars
        • K(b);P-FLIGHT,P_SPINP(c)::QAR(I)
        • K(b);P_SPINP(d),S_FLIGHT::B(B)
      • Refutation
        • P(c);
    • Try
      • B(B);
      • Vars
        • K(b);P-FLIGHT,P_SPINP(c)::QAR(I)
        • P(c);OGATEB,SBLOCK::QAB(I),XP(g)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(I);
      • Threat
        • QAB1(I)
      • Refutation
        • P(e);XQ(I)
    • Try
      • Q(I);XP(d)
      • Threat
        • DUALS(2)
      • Refutation
        • P(f);XQ(I)
    • Try
      • Q(I);P_PINP(c)
      • Vars
        • K(b);N_SPINP(c),P-FLIGHT::QAR(I)
      • Refutation
        • P(g);N_SPINP(c),XQ(I)
    • Try
      • Q(I);
      • Vars
        • K(b);P-FLIGHT::QAR(I)
      • Refutation
        • P(c);
    • Try
      • Q(I);
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(I),XP(g)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(I);
      • Vars
        • K(b);P-FLIGHT,P_SPINP(c)::QAR2(I)
      • Refutation
        • P(c);
    • Try
      • Q(I);
      • Vars
        • P(c);OGATEB,SBLOCK::QAB(I),XP(g)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(H);XP(c)
    • Vars
      • K(b);P-FLIGHT::QAR(I)+S(H)
      • K(b);P_SPINP(d),S_FLIGHT::B(B)
      • P(d);OGATE,SBLOCK,XS(H)::QAR2(I),XP(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).