MESON Chess Problem Database

Problem Display
PID: 170113 (B4B2/8/K4p2/1N1p1p1n/2kp1pQn/8/2P1P2p/8 w - - 0 1)

Biveroni, Nuot

Tages-Anzeiger, 1972

B4B2/8/K4p2/1N1p1p1n/2kp1pQn/8/2P1P2p/8

#2

7 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.exd3#
    • 1...f3
      • 2.Qxd4#
  • Tries
    • 1.Qf3?
      • threat
        • 2.Sa3#
        • 2.Bxd5#
        • 2.Qxd5#
        • 2.Qb3#
        • 2.Qd3#
      • 1...h1Q
        • 2.Sa3#
        • 2.Bxd5#
        • 2.Qb3#
        • 2.Qd3#
      • 1...h1B
        • 2.Sa3#
        • 2.Bxd5#
        • 2.Qb3#
        • 2.Qd3#
      • 1...d3
        • 2.Bxd5#
        • 2.Qxd5#
        • 2.Qxd3#
        • 2.exd3#
      • 1...Sxf3!
    • 1.Qxf5?
      • threat
        • 2.Bxd5#
        • 2.Qd3#
        • 2.Qc8#
        • 2.Qxd5#
      • 1...h1Q
        • 2.Qd3#
        • 2.Qc8#
      • 1...h1B
        • 2.Qd3#
        • 2.Qc8#
      • 1...d3
        • 2.Bxd5#
        • 2.Qxd3#
        • 2.Qc8#
        • 2.Qxd5#
        • 2.exd3#
      • 1...Sxf5!
    • 1.Qxf4?
      • threat
        • 2.Qc7#
        • 2.Qxd4#
      • 1...Sf3
        • 2.Qc7#
      • 1...Sxf4!
  • Keys
    • 1.e4!
      • threat
        • 2.Bxd5#
      • 1...dxe4
        • 2.Qg8#
      • 1...fxe4
        • 2.Qc8#
      • 1...dxe4 ep
        • 2.Qe2#
      • 1...fxe4 ep
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • P(c);OGATE,P_SPINP(d)::P(B),XP(c)
    • P(d);OGATE,P_SPINP(c)::QAR1(C),XP(c)
  • Tries
    • Try
      • Q(C);
      • Threat
        • DUALS(5)
      • Refutation
        • S(e);XQ(C)
    • Try
      • Q(C);XP(g)
      • Threat
        • DUALS(4)
      • Refutation
        • S(e);XQ(C)
    • Try
      • Q(C);P_PINP(c),XP(d)
      • Threat
        • DUALS(2)
      • Vars
        • S(e);::QAR(C)
      • Refutation
        • S(h);N_SPINP(c),XQ(C)
  • Actual
    • P(B);
    • Threat
      • B(F),XP(f)
    • Vars
      • P(f);OGATEB,XP(B)::QAB(C)
      • P(g);OGATE,XP(B)::QAR(C)
      • P(c);EP,N_GUARD,P_SPINP(d),XP(B)::QAB(C)
      • P(d);EP,OGATE,P_SPINP(c),XP(B)::QAR1(C),XP(c)
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).