MESON Chess Problem Database

Problem Display
PID: 91489 (2bNN3/2Pp4/7p/3kp1pP/1P2p1Q1/1P2P3/1p1p1P2/bK6 w - - 0 1)

Smit, Geert

Probleemblad, 1952

2bNN3/2Pp4/7p/3kp1pP/1P2p1Q1/1P2P3/1p1p1P2/bK6

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ba6
      • 2.Qxd7#
    • 1...Bb7
      • 2.Qxd7#
    • 1...d1Q+
      • 2.Qxd1#
    • 1...d1S
      • 2.Qxd1#
    • 1...d1B
      • 2.Qxd1#
    • 1...d1R+
      • 2.Qxd1#
    • 1...d6
      • 2.Sf6#
  • Tries
    • 1.Qe2?
      • threat
        • 2.Qc4#
        • 2.Qb5#
        • 2.Qxd2#
      • 1...d1Q+
        • 2.Qxd1#
      • 1...d1R+
        • 2.Qxd1#
      • 1...d1S
        • 2.Qxd1#
        • 2.Qc4#
        • 2.Qb5#
        • 2.Qd2#
      • 1...d1B
        • 2.Qxd1#
        • 2.Qc4#
        • 2.Qb5#
        • 2.Qd2#
      • 1...Ba6!
    • 1.Qf3?
      • threat
        • 2.Qf7#
      • 1...d1Q+
        • 2.Qxd1#
      • 1...d1R+
        • 2.Qxd1#
      • 1...d6
        • 2.Sf6#
      • 1...exf3!
  • Keys
    • 1.f4!
      • 1...d1Q+
        • 2.Qxd1#
      • 1...d1R+
        • 2.Qxd1#
      • 1...exf4
        • 2.Qf5#
      • 1...gxf4
        • 2.Qg8#
      • 1...exf4 ep
        • 2.Qc4#
      • 1...d1S
        • 2.Qxd1#
      • 1...d1B
        • 2.Qxd1#
      • 1...Ba6
        • 2.Qxd7#
      • 1...Bb7
        • 2.Qxd7#
      • 1...d6
        • 2.Sf6#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • B(j);N_GUARD::QAR2(F),XP(i)
    • P(c);CHECK,OGATEB::QAR(F),XQ(c)
    • P(c);OGATEB::QAR(F),XS(c)
    • P(c);OGATEB::QAR(F),XB(c)
    • P(c);CHECK,OGATEB::QAR(F),XR(c)
    • P(i);SBLOCK::S(J)
  • Tries
    • Try
      • Q(F);
      • Threat
        • DUALS(3)
      • Vars
        • P(c);CHECK,OGATEB::QAR(F),XQ(c)
        • P(c);CHECK,OGATEB::QAR(F),XR(c)
      • Refutation
        • B(j);
    • Try
      • Q(F);P_PINP(d)
      • Threat
        • QAB(F)
      • Vars
        • P(c);CHECK,OGATEB::QAR(F),XQ(c)
        • P(c);CHECK,OGATEB::QAR(F),XR(c)
        • P(i);SBLOCK::S(J)
      • Refutation
        • P(d);N_SPINP(d),XQ(F)
  • Actual
    • P(B);
    • Vars
      • P(c);CHECK,OGATEB::QAR(F),XQ(c)
      • P(c);CHECK,OGATEB::QAR(F),XR(c)
      • P(f);OGATEB,XP(B)::QAR2(F)
      • P(g);OGATE,XP(B)::QAB(F)
      • P(d);EP,OGATE,XP(B)::QAB1(F)
      • P(c);OGATEB::QAR(F),XS(c)
      • P(c);OGATEB::QAR(F),XB(c)
      • B(j);N_GUARD::QAR2(F),XP(i)
      • P(i);SBLOCK::S(J)
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).