MESON Chess Problem Database

Problem Display
PID: 175580 (8/4p1Q1/KP2Br2/8/pP1B4/k7/8/8 w - - 0 1)

von Wardener, Friedrich Freiherr

Bohemia, 1900

8/4p1Q1/KP2Br2/8/pP1B4/k7/8/8

#2

6 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kxb4
      • 2.Qxe7#
  • Tries
    • 1.Bb2+?
      • 1...Kxb4
        • 2.Qxe7#
      • 1...Kxb2!
    • 1.Bxf6?
      • 1...Kxb4
        • 2.Bxe7#
        • 2.Qxe7#
      • 1...exf6!
    • 1.Qxf6?
      • 1...Kxb4
        • 2.Qxe7#
      • 1...exf6!
    • 1.Qg2?
      • threat
        • 2.Qb2#
      • 1...Kxb4
        • 2.Qb2#
      • 1...Rf2!
    • 1.Qg3+?
      • 1...Kxb4
        • 2.Qc3#
      • 1...Rf3!
  • Keys
    • 1.Ba1!
      • 1...Kxb4
        • 2.Qxe7#
      • 1...Rxe6
        • 2.Qb2#
      • 1...Rf1
        • 2.Qb2#
        • 2.Qc3#
      • 1...Rf2
        • 2.Qc3#
      • 1...Rf3
        • 2.Qb2#
      • 1...Rf4
        • 2.Qb2#
        • 2.Qc3#
      • 1...Rf5
        • 2.Qb2#
        • 2.Qc3#
      • 1...Rg6
        • 2.Qb2#
        • 2.Qc3#
      • 1...Rh6
        • 2.Qb2#
        • 2.Qc3#
      • 1...Rf7
        • 2.Qb2#
        • 2.Qc3#
      • 1...Rf8
        • 2.Qb2#
        • 2.Qc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,S_FLIGHT,XP(A)::QAB(F),XP(d)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • K(a);S_FLIGHT,XP(A)::QAB(F),XP(d)
      • Refutation
        • K(a);P_SPINR(c),S_FLIGHT,XB(B)
    • Try
      • B(B);XR(c)
      • Refutation
        • P(d);XB(B)
    • Try
      • Q(F);XR(c)
      • Vars
        • K(a);OGATEB,S_FLIGHT,XP(A)::QAB(F),XP(d)
      • Refutation
        • P(d);XQ(F)
    • Try
      • Q(F);
      • Threat
        • QAB1(F)
      • Vars
        • K(a);S_FLIGHT,XP(A)::QAR2(F)
      • Refutation
        • R(c);
    • Try
      • Q(F);CHECK
      • Vars
        • K(a);S_FLIGHT,XP(A)::QAB1(F)
      • Refutation
        • R(c);P_SPINR(c)
  • Actual
    • B(B);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XP(A)::QAB(F),XP(d)
      • R(c);OGATE,P_PINP(D),XB(E)::QAB1(F)
      • R(c);OGATE::QAR2(F)
      • R(c);OGATE::QAB1(F)
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).