MESON Chess Problem Database

Problem Display
PID: 17210 (8/3P4/8/8/8/3p4/1KBkpQ2/8 w - - 0 1)

Schonberger, Tibor

L'Echiquier, 1925-1926

8/3P4/8/8/8/3p4/1KBkpQ2/8

#2

4 + 3

273 Mat Plus 1995

SOLUTION

  • SOUND
  • Sets
    • 1...dxc2
      • 2.d8Q#
      • 2.d8R#
  • Tries
    • 1.Kb3?
      • 1...Kc1
        • 2.Qe1#
      • 1...dxc2!
    • 1.Bxd3?
      • threat
        • 2.Qxe2#
      • 1...Kd1
        • 2.Qxe2#
      • 1...Kxd3!
    • 1.Qd4?
      • 1...e1Q
        • 2.Qxd3#
      • 1...e1S
        • 2.Qf2#
      • 1...e1B
        • 2.Qxd3#
      • 1...e1R
        • 2.Qxd3#
      • 1...Ke1!
  • Keys
    • 1.Qg3!
      • 1...dxc2
        • 2.d8Q#
        • 2.d8R#
      • 1...e1Q
        • 2.Qxd3#
      • 1...e1S
        • 2.Qf2#
      • 1...e1B
        • 2.Qxd3#
      • 1...e1R
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(c);XB(B)::P=Q
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(a);N_SPINP(b),S_FLIGHT::QAR2(C)
      • Refutation
        • P(c);XB(B)
    • Try
      • B(B);XP(c)
      • Threat
        • QAR1(C),XP(b)
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAB1(C),XP(b)
      • Refutation
        • K(a);N_SPINP(b),P-FLIGHT,XB(B)
    • Try
      • Q(C);N_PINP(b),P_PINP(c)
      • Vars
        • P(b);SBLOCK::QAR1(C),XP(c)
        • P(b);OGATEB::QAR2(C)
      • Refutation
        • K(a);N_SPINP(c),S_FLIGHT
  • Actual
    • Q(C);N_PINP(b)
    • Vars
      • P(c);XB(B)::P=Q
      • P(b);SBLOCK::QAR1(C),XP(c)
      • P(b);OGATEB::QAR2(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).