MESON Chess Problem Database

Problem Display
PID: 183123 (7K/8/8/5k1P/2P1R1NP/4Pn2/2Qn4/8 w - - 0 1)

Palkoska, Emil

Revue d'Echecs, 1907

7K/8/8/5k1P/2P1R1NP/4Pn2/2Qn4/8

#2

8 + 3

6490 yacpdb 2018
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Rd4+?
      • 1...Se4
        • 2.Qxe4#
      • 1...Ke6!
    • 1.Re7+?
      • 1...Se4
        • 2.Qxe4#
      • 1...Kxg4!
    • 1.Re8+?
      • 1...Se4
        • 2.Qxe4#
      • 1...Kxg4!
  • Keys
    • 1.Qd1!
      • 1...Kxe4
        • 2.Qc2#
      • 1...Sxc4
        • 2.Qxf3#
      • 1...Sxe4
        • 2.Qd7#
      • 1...Sxh4
        • 2.Re5#
      • 1...Se5
        • 2.Rxe5#
      • 1...Sb1
        • 2.Qxf3#
      • 1...Sf1
        • 2.Qxf3#
      • 1...Sb3
        • 2.Qxf3#
      • 1...Se1
        • 2.Re5#
      • 1...Sg1
        • 2.Re5#
      • 1...Sh2
        • 2.Re5#
      • 1...Sd4
        • 2.Re5#
      • 1...Sg5
        • 2.Re5#

This anticipates 190043(1913)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(A),XS(a)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(D);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(A),XS(a)
      • Refutation
        • K(c);S_FLIGHT,XS(E)
    • Try
      • R(D);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(A),XS(a)
      • Refutation
        • K(c);S_FLIGHT,XS(E)
  • Actual
    • Q(A);
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(D)::QAB(A)
      • S(a);N_GUARD,XP(C)::QAR2(A),XS(b)
      • S(a);OGATE,SBLOCK,XR(D)::QAB(A)
      • S(b);N_GUARD,XP(F)::R1(D)
      • S(b);N_GUARD::R1(D),XS(b)
      • S(a);N_GUARD::QAR2(A),XS(b)
      • S(b);N_GUARD::R1(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).