MESON Chess Problem Database

Problem Display
PID: 108296 (B7/5p2/2p5/pP2Q3/2k1p3/K1P2N1R/2Ppr3/8 w - - 0 1)

Fleck, Ferenc

Northwest Chess, 1978

B7/5p2/2p5/pP2Q3/2k1p3/K1P2N1R/2Ppr3/8

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Re1
      • 2.Sxd2#
    • 1...Re3
      • 2.Sxd2#
    • 1...e3
      • 2.Rh4#
    • 1...cxb5
      • 2.Qd4#
      • 2.Qc7#
  • Tries
    • 1.Rh5?
      • threat
        • 2.Qd4#
        • 2.Qc5#
      • 1...c5
        • 2.Qxc5#
      • 1...d1Q
        • 2.Qc5#
      • 1...d1R
        • 2.Qc5#
      • 1...f5!
    • 1.Qd6?
      • threat
        • 2.Qxc6#
      • 1...Kxc3
        • 2.Qc5#
        • 2.Qxc6#
      • 1...Kxb5
        • 2.Qxc6#
      • 1...cxb5
        • 2.Se5#
        • 2.Qc7#
        • 2.Qd4#
        • 2.Qc6#
      • 1...c5!
    • 1.Qf6?
      • threat
        • 2.Qxc6#
      • 1...Kxb5
        • 2.Qxc6#
      • 1...Kc5
        • 2.Qxc6#
      • 1...Kd5
        • 2.Qxc6#
      • 1...cxb5
        • 2.Qd4#
        • 2.Qc6#
      • 1...c5!
    • 1.Qc7?
      • threat
        • 2.Qxc6#
      • 1...Kxc3
        • 2.Qxc6#
      • 1...Kxb5
        • 2.Qxc6#
      • 1...Kc5
        • 2.Qxc6#
      • 1...Kd5
        • 2.Qxc6#
      • 1...c5!
    • 1.Qxe4+?
      • 1...Kxc3
        • 2.Qd3#
        • 2.Qxc6#
      • 1...Kxb5
        • 2.Qxc6#
      • 1...Kc5
        • 2.Qxc6#
      • 1...Rxe4!
    • 1.Qe6+?
      • 1...Kxc3
        • 2.Qb3#
        • 2.Qxc6#
      • 1...Kxb5
        • 2.Qxc6#
      • 1...Kc5
        • 2.Qxc6#
      • 1...fxe6!
  • Keys
    • 1.Qe8!
      • threat
        • 2.Qxc6#
      • 1...Kxc3
        • 2.Qxc6#
      • 1...Kxb5
        • 2.Qxc6#
      • 1...Kc5
        • 2.Qxc6#
      • 1...Kd5
        • 2.Qxc6#
      • 1...cxb5
        • 2.Qc6#
        • 2.Qc8#
      • 1...c5
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 3
  • Sets
    • R(b);N_GUARD::S(D),XP(a)
    • R(b);N_GUARD,P_PINP(C)::S(D),XP(a)
    • P(d);OGATEB::R(E)
  • Tries
    • Try
      • R(E);
      • Threat
        • DUALS(2)
      • Vars
        • P(f);::QAR1(G),XP(f)
        • P(a);::QAR1(G)
      • Refutation
        • P(g);
    • Try
      • Q(G);
      • Threat
        • QAR2(G),XP(f)
      • Vars
        • K(c);S_FLIGHT,XP(F)::QAB1(G),XP(f)
      • Refutation
        • P(f);
    • Try
      • Q(G);
      • Threat
        • QAR2(G),XP(f)
      • Vars
        • K(c);S_FLIGHT,XP(F)::QAB1(G),XP(f)
        • K(c);P-FLIGHT::QAR1(G),XP(f)
        • K(c);P_SPINP(f),S_FLIGHT::QAB1(G),XP(f)
      • Refutation
        • P(f);
    • Try
      • Q(G);P_PINP(f)
      • Threat
        • QAR2(G),XP(f)
      • Vars
        • K(c);P-FLIGHT,XP(C)::QAR(G),XP(f)
        • K(c);N_SPINP(f),S_FLIGHT,XP(F)::QAB1(G),XP(f)
        • K(c);P-FLIGHT::QAR1(G),XP(f)
        • K(c);S_FLIGHT::QAB1(G),XP(f)
      • Refutation
        • P(f);
    • Try
      • Q(G);CHECK,XP(d)
      • Vars
        • K(c);S_FLIGHT,XP(F)::QAB1(G),XP(f)
        • K(c);P-FLIGHT::QAR1(G),XP(f)
      • Refutation
        • R(b);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(c);S_FLIGHT,XP(F)::QAB1(G),XP(f)
        • K(c);P-FLIGHT::QAR1(G),XP(f)
      • Refutation
        • P(g);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAR2(G),XP(f)
    • Vars
      • K(c);P-FLIGHT,XP(C)::QAR(G),XP(f)
      • K(c);P_SPINP(f),S_FLIGHT,XP(F)::QAB1(G),XP(f)
      • K(c);P-FLIGHT::QAR1(G),XP(f)
      • K(c);P_SPINP(f),S_FLIGHT::QAB1(G),XP(f)
      • P(f);SBLOCK::S(D)
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).